Date   

Re: Newfoundland Ultralight Radio Log May 31

robert ross
 


On 2013-05-31, at 8:10 AM, Allen wrote:

 

Hello All,

A new addition to the Ultralight logbook last evening.

1602 khz - NETHERLANDS - Radio Seagull from the Jenni Baynton ship , Harlingen 1:00 UTC May 31 w/ news followed by "Radio Seagull ID's mention of merchandise available on their website , music including a Neil Young song "Throw Your Hatred Down"

This station had been previously testing a while ago on 1395 khz. 1602 is their usual operating frequency.

Ultralight Station # 1055 Trans-Atlantic station # 457

Receiver: SRF-M37W barefoot

Good DX

Allen Willie
Bristol's Hope, Newfoundland
47:43N 53:11W


OK Allen...I feel honoured to be "Tied" in Number of Stations heard with the "King of ULR DX"!!!! As of Today you and I have both heard 1055 ULR Stations......I'm sure by Tomorrow or the end of the weekend.....I will be the Runner-Up!! Your meteoric rise to the pinnacle of ULR DXing has been a real treat to watch. The Many Trans-Atlantics, Latins, and World Wide Stations you have logged are unparalleled. You have heard DX on a ULR Receiver that Many DX'ers would be proud to hear , even on the Most Sophisticated of Antennas and Top Notch Receivers!!

You are an inspiration to all of us...and I will truly enjoy my Time ULR DXing.....trying to "Catch Up to You" as you race for the top!!. 

The Late John Bryant, one of the Groups Founders, and the Late Kirk Allen, a close friend of John's were both Pioneers in ULR DXing and helped put the ULR Group on the Map, and earn the Group a Positive Status in the World of AM BCB DX. You too are a Pioneer in thew Field of ULR DXing.....and I will be most  happy to be in 2nd place....right behind the ULR DX Master of Newfoundland...and most likely the World!!

A Great Job Allen....thanks for the efforts you have put into the Hobby and and the ULR Group in particular!!

We may have to soon "Invent" some NEW ULR AWARDS...just to cover some of the accomplishments you have made...that we're never considered possible when the Awards Program was started!!

Regards........ROB VA3SW  (ULR DX AWARDS COMMITTEE MEMBER)

Robert S. Ross
London, Ontario CANADA


Newfoundland Ultralight Radio Log May 31

Allen Willie
 

Hello All,



A new addition to the Ultralight logbook last evening.


1602 khz - NETHERLANDS - Radio Seagull from the Jenni Baynton ship , Harlingen 1:00 UTC May 31 w/ news followed by "Radio Seagull ID's mention of merchandise available on their website , music including a Neil Young song "Throw Your Hatred Down"


This station had been previously testing a while ago on 1395 khz. 1602 is their usual operating frequency.

Ultralight Station # 1055 Trans-Atlantic station # 457

Receiver: SRF-M37W barefoot


Good DX

Allen Willie
Bristol's Hope, Newfoundland
47:43N 53:11W


Re: New country heard on Ultralight here in Newfoundland

Gary DeBock
 

Hi Allen,
 
Congratulations on the reception of 900-Grenada, for Country # 98 on Ultralight radios.
 
I know from experience how tough these are to track down... my last new one was 666-New Caledonia in 2011 (one of the few that John Bryant didn't get before me). As in other parts of the world, many Pacific island AM transmitters are shutting down... Fiji used to be an easy catch on 639 kHz, but now it's down to a single, tough frequency (558 kHz).
 
73, Gary DeBock (in Puyallup, WA, USA)
 
 
 

-----Original Message-----
From: Allen
To: ultralightdx
Sent: Thu, May 30, 2013 10:50 am
Subject: [ultralightdx] New country heard on Ultralight here in Newfoundland

 
Hello To All,

An interesting evening as many Brazilian stations were audible once again here in the "Hope" after 10 PM local time . Nothing new was logged during that time, however an early morning rise at 4:30 AM today produced a new entry and new country for the Ultralight log which becomes country # 98 logged on an Ultralight.

900 - Barbados - CBC Radio (Caribbean Broadcasting) Bridgetown
7:17 UTC May 30
w/ Caribbean accented man with many mentions of Barbados, Grenada as well as banking and political talk of the island.
( Signal on peaks poking through Radio Progresso in Cuba )

Ultralight Station # 1054 Country # 98 on Ultralight Radio

Receiver: SRF-M37W barefoot

Good DX

Allen Willie
Bristol's Hope, Newfoundland


New country heard on Ultralight here in Newfoundland

Allen Willie
 

Hello To All,


An interesting evening as many Brazilian stations were audible once again here in the "Hope" after 10 PM local time . Nothing new was logged during that time, however an early morning rise at 4:30 AM today produced a new entry and new country for the Ultralight log which becomes country # 98 logged on an Ultralight.

900 - Barbados - CBC Radio (Caribbean Broadcasting) Bridgetown
7:17 UTC May 30
w/ Caribbean accented man with many mentions of Barbados, Grenada as well as banking and political talk of the island.
( Signal on peaks poking through Radio Progresso in Cuba )

Ultralight Station # 1054 Country # 98 on Ultralight Radio

Receiver: SRF-M37W barefoot

Good DX


Allen Willie
Bristol's Hope, Newfoundland


Antenna Lights Trifecta

ferrite61 <dxrx@...>
 

Changed the batteries tonite in the PL-310, and took the opportunity to see whats up Medium-Wave. Having a mystery on 1270, I park there at 2330 EDT. Straight-up midnight a Classic Rock/Oldies station finishes up Fleetwood Mac song and into break. I get a call sign of WQKR a few minutes later. Odd in the N/S direction, usually WSPR here doing well.

WSPR on 1270 provides the Spanish canciones and was fading in an out during this listening period. Things tonite after T-Storms are hashy with some static bursts. A lot of good RX has been found here at most times of the night... tonite no exception, in spite of conditions.

I put the radio E/W to see if anything else is there. First off was obvious ESPN by "sounder" dadada-dadada. At 00:20 EDT (Thurs.) Sportscenter, and in to local ads, all PSA's. But I get a call for WDLA Walden (this was mis-heard, its really Walton... and there turns out to be both in New York)

About an hour later, instead of ESPN, a call sign fades in WXGO with an apparent slogan of "The "O" in Oldies", or something very similar. This was pretty much in the noise-blanket, like the others.

Upon look-up at the FCC I got quite the surprise...

#616 WQKR is not from PA but is a 43 Watt station in Portland, TN. This Station is at 1296.15km distance, having a #5 Ranked score of 21423 points. Its Antenna Light #46 with a rating of 30.14km/W making it a "Red" light. Time of ID 00:02 EDT 5/30/13.

#617 WDLA is from Walton, NY (There is a Walden, NY, that I'm acquainted with, being close to Middletown and Stuart Airport: Walton is in the Catskills near the Cannondale Resevoir). WDLA broadcasts with 89 Watts at a distance of 194.16km making Antenna Light #47 a local "black-light" of 2.18km/W. This solves the mystery on 1270.

#618 is WXGO from Madison, IN broadcasting with 58 Watts at a distance of 1100.11km. WXGO does "GO" to #14 on the scoring list with 17039 points. Its Antenna Light #48, completing a very unexpected trifecta being a "green-light" at 18.97km/W

And, I'v got yet a new mystery... someone is playing new music, like Adult-Alternative. Only heard in E/W direction and fade out going NE or NW. Nothing on the AMLOGBOOK fits, but there is an odd entry for WHGS, being "Variety Hits FM" yet listed else where as Gospel/Religion. The FCC indicates the same owner as the G/R format, so thats at least something to keep in mind (haunting...LOL).

Well, that about it for one night... makes up for all the no-hitters recently.

Paul S. in CT


Re: Considering a transplant...Not for me, my radio.

ferrite61 <dxrx@...>
 

Ferrite is a whole different animal, and Prof. Coyle will not work.
Since I read the diameter is 0.99x0.45 inch, I can convert to equivilent circle, then subtract the hole. This will yield the "solid" diameter of the rod. What I need is the length of the rod. With that, I can calculate the approximate inductance given the number of turns.


Paul S. in CT

--- In ultralightdx@yahoogroups.com, D1028Gary@... wrote:


Karl,

Since you have already measured the inductance of the DR-920's stock loopstick coils and have an LCR meter to check the inductance of new coils that you wind, there is no need for you to refer to any data from "Professor Coyle." Simply wind two new coils on your replacement ferrite rod (using something like Rite-Aid 1" waterproof tape, sticky side up, to hold the coil turns in place), and make sure that the inductances of your two new coils match those of the original loopstick. Solder the two new coils into the circuitry at the exact same four connection points (to match the coil inductances and loopstick physical positions of the original coils), and you should receive quite an impressive AM sensitivity boost.

73, Gary DeBock (in Puyallup, WA, USA)





-----Original Message-----
From: Karl <krk63601@...>
To: ultralightdx <ultralightdx@yahoogroups.com>
Sent: Mon, May 27, 2013 6:46 am
Subject: [ultralightdx] Re: Considering a transplant...Not for me, my radio.






Another question Gary. This will be my first experience coil winding on ferrite. Will coil winding data from the "Professor Coyle" site for cylindrical coils get me in the ballpark or is ferrite a whole different animal? Not looking for accuracy, just ballpark. I have an LC meter for final adjustment. Thanks again, Karl

--- In ultralightdx@yahoogroups.com, "Karl" <krk63601@> wrote:






Thanks for the input Gary. I agree, out of the box, this thing was a real dog. However, after a very careful alignment (your instructions in the "Files" section [thank you], and then-some) I'm getting pretty good performance barefoot at night. With my Hula-Loop antenna, Mexicans and Canadians are regular visitors, and quite listenable, though that large loop is rather unwieldy in my small apartment. I monitored the aftermath of the Moore tornado as though it were local, though I'll admit that Missouri to Oklahoma is no great stretch. Selectivity does need improvement. Perhaps instead of a transplant I'll go with a different idea. I've been kicking around the idea of using a tuned ferrite loop antenna as the tank circuit for an Armstrong regen, picking up the RF prior to detection, as a combo antenna/q-multiplier. Any thoughts? Why am I sticking with the DR-920? Well, to kinda paraphrase Donald Rumsfeld, you fight with the army you've got, or in my case listen with what you have, and make the best of it. By the way, I've added SSB and CW to the DR-920 by means of a little Ten-Tec BFO kit. For $20.00 including shipping, and a half hour assembly time, it's an excellent addition. Very stable if you put it in a little metal box. I've also made an active antenna using their 1001 preamp, but that didn't work out as well as the BFO. Unless I decoupled it to the point of uselessness, it overloaded the receiver. As more and more broadcasters abandon SW to the conspiracy nuts and religious fanatics, I find myself listening more and more to MW, and it's proving to be fun. I just need to get a better handle on the QRN problem here. Every geezer here has a noisy computer or TV, and CFLs out the wazoo, and going out to the RFI quiet state park isn't always convenient. Thanks again for your input, Karl

--- In ultralightdx@yahoogroups.com, D1028Gary@ wrote:


Hello Karl,

Thanks for your interest in a loopstick antenna transplant for the Tecsun DR-920 portable.

<<< 1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions? >>>

To be perfectly honest, Karl, the DR-920 is a rather poor model to choose for a loopstick transplant. As an analog model (with digital readout) having a reputation for rather poor AM selectivity, adding a more sensitive loopstick would exacerbate the model's selectivity problem. Analog Ultralights can be suitable candidates for loopstick transplants if they have reasonable stock selectivity and crunch resistance (such as the Sony SRF-39FP and Tecsun R911 analog models, among others), but the DR-920 definitely does not fall in this category.

<<< 2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions? >>>

If you decide to proceed with the transplant project anyway, the procedure would consist of winding two new coils on your larger ferrite rod with inductances matching the two stock coils (420 uh and 75 uh). The two new coils should also be positioned in a manner resembling the stock coils (i.e. at the same approximate positions on the larger rod). The quality of the wire that you use will determine the final sensitivity of your replacement loopstick (i.e. high sensitivity for larger diameter Litz wire, moderate sensitivity for medium diameter Litz wire, and lower sensitivity for enamel wire).

<<< 3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod? >>>

"Slider" coils are never necessary in an analog radio design. Simply wind fixed coils with inductances matching the two stock coils, and transplant the loopstick into the circuitry in place of the two stock coils (at the same four connection points). In the DR-920, though, you really shouldn't expect too much improvement from such a project. The DR-920 was a model purchased for the 2009 Ultralight Radio Shootout, but was dropped from contention because of poor AM performance relative to the other Ultralight models. A mini-review by Stephen Ponder of the DR-920 model is posted at the message link below.
http://groups.yahoo.com/group/ultralightdx/message/16297

73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)




-----Original Message-----
From: Karl <krk63601@>
To: ultralightdx <ultralightdx@yahoogroups.com>
Sent: Sun, May 26, 2013 3:42 pm
Subject: [ultralightdx] Considering a transplant...Not for me, my radio.






Hello all. I own a Tecsun DR-920 radio, and all things considered, it's not a bad piece of kit. I am considering doing a transplant though, to both increase gain, and give me deeper nulls in an effort to combat some really miserable QRN I'm experiencing here in my "geezer flat". I have a few questions I'd like to run your way, before embarking on the project.
1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions?
2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions?
3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod?
Well, I guess that's all my questions for now. Thanks to all for any input you can offer, Karl


Pacific DX and QSL - 22 May 2013

Stephen Ponder <stephen_ponder@...>
 

Sorry this log is a little late.  It's been a chaotic week ... ugh!

Heard using a barefoot Eton e100 in the early hours (CDT local) of Wed 22 May 2013 ...

9700 kHz  NEW ZEALAND  RNZI  0816 UTC  "This is RNZI Radio New Zealand International" ID, then into what sounded like a 4-part harmony Maori song.  Beautiful!!  Heard another ID at 0829 UTC followed by Pacific News.  SIO 444.

Since I had not verified RNZI from Houston yet, I submitted a reception report using RNZI's online QSL form located at "http://www.rnzi.com/pages/qsl.php."

I was pleasantly surprised to find an email QSL from RNZI in my inbox just 2 short days later!!  The QSL was signed by Adrian Sainsbury, Frequency Manager.  I was happy!!

73 & Good DX,

Steve Ponder, N5WBI
Houston, TX



Newfoundland Ultralight Radio Logs May 27

Allen Willie
 

Hello To All,

As disturbed atmospheric conditions continued , Brazilian stations were audible once again last evening.
Over the past few evenings and early mornings three new entries were added to the Ultralight radio log as follows:


1360 - BRAZIL - Radio Iracema, Ipu ZYH 650 23:42 UTC 5/24/13 w/ Portuguese sports commentary by man, mentions of Brazil, sound effects , ID ( Offsets list mentions this one as 1359 something below nominal ... definitely sounded a bit off frequency as mentioned )

Ultralight Station # 1051 Latin Station # 200




1010 - BRAZIL - CBN AM Do Povo Fortaleza ZYH 625 23:25 UTC 5/26/13 w/ fast paced Portuguese talk, news , mentions of Brazil, ID (even stronger at 23:50 UTC )

Ultralight Station # 1052 Latin Station # 201




990 - WDCX - Rochester, New York 7:45 UTC 5/27/13 SRN Life AM, website mentioned, Inspirational music, talk, special program anncment ( heard under CBY - Cornerbrook, NL )


Ultralight Station # 1053



Receiver: SRF-M37W barefoot


Good DX

Allen Willie
Bristol's Hope, Newfoundland
47:43N 53:11W


Re: Considering a transplant...Not for me, my radio.

Karl <krk63601@...>
 

Right Gary, but I was hoping to use the winding data for a "ballpark" number of turns. Sort of "start checking L when I get to 'n' number of turns"...know what I mean? Thanks, Karl

--- In ultralightdx@yahoogroups.com, D1028Gary@... wrote:


Karl,

Since you have already measured the inductance of the DR-920's stock loopstick coils and have an LCR meter to check the inductance of new coils that you wind, there is no need for you to refer to any data from "Professor Coyle." Simply wind two new coils on your replacement ferrite rod (using something like Rite-Aid 1" waterproof tape, sticky side up, to hold the coil turns in place), and make sure that the inductances of your two new coils match those of the original loopstick. Solder the two new coils into the circuitry at the exact same four connection points (to match the coil inductances and loopstick physical positions of the original coils), and you should receive quite an impressive AM sensitivity boost.

73, Gary DeBock (in Puyallup, WA, USA)





-----Original Message-----
From: Karl <krk63601@...>
To: ultralightdx <ultralightdx@yahoogroups.com>
Sent: Mon, May 27, 2013 6:46 am
Subject: [ultralightdx] Re: Considering a transplant...Not for me, my radio.






Another question Gary. This will be my first experience coil winding on ferrite. Will coil winding data from the "Professor Coyle" site for cylindrical coils get me in the ballpark or is ferrite a whole different animal? Not looking for accuracy, just ballpark. I have an LC meter for final adjustment. Thanks again, Karl

--- In ultralightdx@yahoogroups.com, "Karl" <krk63601@> wrote:






Thanks for the input Gary. I agree, out of the box, this thing was a real dog. However, after a very careful alignment (your instructions in the "Files" section [thank you], and then-some) I'm getting pretty good performance barefoot at night. With my Hula-Loop antenna, Mexicans and Canadians are regular visitors, and quite listenable, though that large loop is rather unwieldy in my small apartment. I monitored the aftermath of the Moore tornado as though it were local, though I'll admit that Missouri to Oklahoma is no great stretch. Selectivity does need improvement. Perhaps instead of a transplant I'll go with a different idea. I've been kicking around the idea of using a tuned ferrite loop antenna as the tank circuit for an Armstrong regen, picking up the RF prior to detection, as a combo antenna/q-multiplier. Any thoughts? Why am I sticking with the DR-920? Well, to kinda paraphrase Donald Rumsfeld, you fight with the army you've got, or in my case listen with what you have, and make the best of it. By the way, I've added SSB and CW to the DR-920 by means of a little Ten-Tec BFO kit. For $20.00 including shipping, and a half hour assembly time, it's an excellent addition. Very stable if you put it in a little metal box. I've also made an active antenna using their 1001 preamp, but that didn't work out as well as the BFO. Unless I decoupled it to the point of uselessness, it overloaded the receiver. As more and more broadcasters abandon SW to the conspiracy nuts and religious fanatics, I find myself listening more and more to MW, and it's proving to be fun. I just need to get a better handle on the QRN problem here. Every geezer here has a noisy computer or TV, and CFLs out the wazoo, and going out to the RFI quiet state park isn't always convenient. Thanks again for your input, Karl

--- In ultralightdx@yahoogroups.com, D1028Gary@ wrote:


Hello Karl,

Thanks for your interest in a loopstick antenna transplant for the Tecsun DR-920 portable.

<<< 1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions? >>>

To be perfectly honest, Karl, the DR-920 is a rather poor model to choose for a loopstick transplant. As an analog model (with digital readout) having a reputation for rather poor AM selectivity, adding a more sensitive loopstick would exacerbate the model's selectivity problem. Analog Ultralights can be suitable candidates for loopstick transplants if they have reasonable stock selectivity and crunch resistance (such as the Sony SRF-39FP and Tecsun R911 analog models, among others), but the DR-920 definitely does not fall in this category.

<<< 2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions? >>>

If you decide to proceed with the transplant project anyway, the procedure would consist of winding two new coils on your larger ferrite rod with inductances matching the two stock coils (420 uh and 75 uh). The two new coils should also be positioned in a manner resembling the stock coils (i.e. at the same approximate positions on the larger rod). The quality of the wire that you use will determine the final sensitivity of your replacement loopstick (i.e. high sensitivity for larger diameter Litz wire, moderate sensitivity for medium diameter Litz wire, and lower sensitivity for enamel wire).

<<< 3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod? >>>

"Slider" coils are never necessary in an analog radio design. Simply wind fixed coils with inductances matching the two stock coils, and transplant the loopstick into the circuitry in place of the two stock coils (at the same four connection points). In the DR-920, though, you really shouldn't expect too much improvement from such a project. The DR-920 was a model purchased for the 2009 Ultralight Radio Shootout, but was dropped from contention because of poor AM performance relative to the other Ultralight models. A mini-review by Stephen Ponder of the DR-920 model is posted at the message link below.
http://groups.yahoo.com/group/ultralightdx/message/16297

73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)




-----Original Message-----
From: Karl <krk63601@>
To: ultralightdx <ultralightdx@yahoogroups.com>
Sent: Sun, May 26, 2013 3:42 pm
Subject: [ultralightdx] Considering a transplant...Not for me, my radio.






Hello all. I own a Tecsun DR-920 radio, and all things considered, it's not a bad piece of kit. I am considering doing a transplant though, to both increase gain, and give me deeper nulls in an effort to combat some really miserable QRN I'm experiencing here in my "geezer flat". I have a few questions I'd like to run your way, before embarking on the project.
1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions?
2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions?
3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod?
Well, I guess that's all my questions for now. Thanks to all for any input you can offer, Karl


Re: Considering a transplant...Not for me, my radio.

Gary DeBock
 

Karl,
 
Since you have already measured the inductance of the DR-920's stock loopstick coils and have an LCR meter to check the inductance of new coils that you wind, there is no need for you to refer to any data from "Professor Coyle." Simply wind two new coils on your replacement ferrite rod (using something like Rite-Aid 1" waterproof tape, sticky side up, to hold the coil turns in place), and make sure that the inductances of your two new coils match those of the original loopstick. Solder the two new coils into the circuitry at the exact same four connection points (to match the coil inductances and loopstick physical positions of the original coils), and you should receive quite an impressive AM sensitivity boost.
 
73, Gary DeBock (in Puyallup, WA, USA)
 
 
 

-----Original Message-----
From: Karl
To: ultralightdx
Sent: Mon, May 27, 2013 6:46 am
Subject: [ultralightdx] Re: Considering a transplant...Not for me, my radio.

 
Another question Gary. This will be my first experience coil winding on ferrite. Will coil winding data from the "Professor Coyle" site for cylindrical coils get me in the ballpark or is ferrite a whole different animal? Not looking for accuracy, just ballpark. I have an LC meter for final adjustment. Thanks again, Karl

--- In ultralightdx@..., "Karl" wrote:
>
>
>
>
>
>
> Thanks for the input Gary. I agree, out of the box, this thing was a real dog. However, after a very careful alignment (your instructions in the "Files" section [thank you], and then-some) I'm getting pretty good performance barefoot at night. With my Hula-Loop antenna, Mexicans and Canadians are regular visitors, and quite listenable, though that large loop is rather unwieldy in my small apartment. I monitored the aftermath of the Moore tornado as though it were local, though I'll admit that Missouri to Oklahoma is no great stretch. Selectivity does need improvement. Perhaps instead of a transplant I'll go with a different idea. I've been kicking around the idea of using a tuned ferrite loop antenna as the tank circuit for an Armstrong regen, picking up the RF prior to detection, as a combo antenna/q-multiplier. Any thoughts? Why am I sticking with the DR-920? Well, to kinda paraphrase Donald Rumsfeld, you fight with the army you've got, or in my case listen with what you have, and make the best of it. By the way, I've added SSB and CW to the DR-920 by means of a little Ten-Tec BFO kit. For $20.00 including shipping, and a half hour assembly time, it's an excellent addition. Very stable if you put it in a little metal box. I've also made an active antenna using their 1001 preamp, but that didn't work out as well as the BFO. Unless I decoupled it to the point of uselessness, it overloaded the receiver. As more and more broadcasters abandon SW to the conspiracy nuts and religious fanatics, I find myself listening more and more to MW, and it's proving to be fun. I just need to get a better handle on the QRN problem here. Every geezer here has a noisy computer or TV, and CFLs out the wazoo, and going out to the RFI quiet state park isn't always convenient. Thanks again for your input, Karl
>
> --- In ultralightdx@..., D1028Gary@ wrote:
> >
> >
> > Hello Karl,
> >
> > Thanks for your interest in a loopstick antenna transplant for the Tecsun DR-920 portable.
> >
> > <<< 1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions? >>>
> >
> > To be perfectly honest, Karl, the DR-920 is a rather poor model to choose for a loopstick transplant. As an analog model (with digital readout) having a reputation for rather poor AM selectivity, adding a more sensitive loopstick would exacerbate the model's selectivity problem. Analog Ultralights can be suitable candidates for loopstick transplants if they have reasonable stock selectivity and crunch resistance (such as the Sony SRF-39FP and Tecsun R911 analog models, among others), but the DR-920 definitely does not fall in this category.
> >
> > <<< 2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions? >>>
> >
> > If you decide to proceed with the transplant project anyway, the procedure would consist of winding two new coils on your larger ferrite rod with inductances matching the two stock coils (420 uh and 75 uh). The two new coils should also be positioned in a manner resembling the stock coils (i.e. at the same approximate positions on the larger rod). The quality of the wire that you use will determine the final sensitivity of your replacement loopstick (i.e. high sensitivity for larger diameter Litz wire, moderate sensitivity for medium diameter Litz wire, and lower sensitivity for enamel wire).
> >
> > <<< 3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod? >>>
> >
> > "Slider" coils are never necessary in an analog radio design. Simply wind fixed coils with inductances matching the two stock coils, and transplant the loopstick into the circuitry in place of the two stock coils (at the same four connection points). In the DR-920, though, you really shouldn't expect too much improvement from such a project. The DR-920 was a model purchased for the 2009 Ultralight Radio Shootout, but was dropped from contention because of poor AM performance relative to the other Ultralight models. A mini-review by Stephen Ponder of the DR-920 model is posted at the message link below.
> > http://groups.yahoo.com/group/ultralightdx/message/16297
> >
> > 73 and Good DX,
> > Gary DeBock (in Puyallup, WA, USA)
> >
> >
> >
> >
> > -----Original Message-----
> > From: Karl
> > To: ultralightdx <ultralightdx@...>
> > Sent: Sun, May 26, 2013 3:42 pm
> > Subject: [ultralightdx] Considering a transplant...Not for me, my radio.
> >
> >
> >
> >
> >
> >
> > Hello all. I own a Tecsun DR-920 radio, and all things considered, it's not a bad piece of kit. I am considering doing a transplant though, to both increase gain, and give me deeper nulls in an effort to combat some really miserable QRN I'm experiencing here in my "geezer flat". I have a few questions I'd like to run your way, before embarking on the project.
> > 1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions?
> > 2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions?
> > 3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod?
> > Well, I guess that's all my questions for now. Thanks to all for any input you can offer, Karl
> >
>


Re: Considering a transplant...Not for me, my radio.

Karl <krk63601@...>
 

Another question Gary. This will be my first experience coil winding on ferrite. Will coil winding data from the "Professor Coyle" site for cylindrical coils get me in the ballpark or is ferrite a whole different animal? Not looking for accuracy, just ballpark. I have an LC meter for final adjustment. Thanks again, Karl

--- In ultralightdx@yahoogroups.com, "Karl" <krk63601@...> wrote:






Thanks for the input Gary. I agree, out of the box, this thing was a real dog. However, after a very careful alignment (your instructions in the "Files" section [thank you], and then-some) I'm getting pretty good performance barefoot at night. With my Hula-Loop antenna, Mexicans and Canadians are regular visitors, and quite listenable, though that large loop is rather unwieldy in my small apartment. I monitored the aftermath of the Moore tornado as though it were local, though I'll admit that Missouri to Oklahoma is no great stretch. Selectivity does need improvement. Perhaps instead of a transplant I'll go with a different idea. I've been kicking around the idea of using a tuned ferrite loop antenna as the tank circuit for an Armstrong regen, picking up the RF prior to detection, as a combo antenna/q-multiplier. Any thoughts? Why am I sticking with the DR-920? Well, to kinda paraphrase Donald Rumsfeld, you fight with the army you've got, or in my case listen with what you have, and make the best of it. By the way, I've added SSB and CW to the DR-920 by means of a little Ten-Tec BFO kit. For $20.00 including shipping, and a half hour assembly time, it's an excellent addition. Very stable if you put it in a little metal box. I've also made an active antenna using their 1001 preamp, but that didn't work out as well as the BFO. Unless I decoupled it to the point of uselessness, it overloaded the receiver. As more and more broadcasters abandon SW to the conspiracy nuts and religious fanatics, I find myself listening more and more to MW, and it's proving to be fun. I just need to get a better handle on the QRN problem here. Every geezer here has a noisy computer or TV, and CFLs out the wazoo, and going out to the RFI quiet state park isn't always convenient. Thanks again for your input, Karl

--- In ultralightdx@yahoogroups.com, D1028Gary@ wrote:


Hello Karl,

Thanks for your interest in a loopstick antenna transplant for the Tecsun DR-920 portable.

<<< 1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions? >>>

To be perfectly honest, Karl, the DR-920 is a rather poor model to choose for a loopstick transplant. As an analog model (with digital readout) having a reputation for rather poor AM selectivity, adding a more sensitive loopstick would exacerbate the model's selectivity problem. Analog Ultralights can be suitable candidates for loopstick transplants if they have reasonable stock selectivity and crunch resistance (such as the Sony SRF-39FP and Tecsun R911 analog models, among others), but the DR-920 definitely does not fall in this category.

<<< 2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions? >>>

If you decide to proceed with the transplant project anyway, the procedure would consist of winding two new coils on your larger ferrite rod with inductances matching the two stock coils (420 uh and 75 uh). The two new coils should also be positioned in a manner resembling the stock coils (i.e. at the same approximate positions on the larger rod). The quality of the wire that you use will determine the final sensitivity of your replacement loopstick (i.e. high sensitivity for larger diameter Litz wire, moderate sensitivity for medium diameter Litz wire, and lower sensitivity for enamel wire).

<<< 3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod? >>>

"Slider" coils are never necessary in an analog radio design. Simply wind fixed coils with inductances matching the two stock coils, and transplant the loopstick into the circuitry in place of the two stock coils (at the same four connection points). In the DR-920, though, you really shouldn't expect too much improvement from such a project. The DR-920 was a model purchased for the 2009 Ultralight Radio Shootout, but was dropped from contention because of poor AM performance relative to the other Ultralight models. A mini-review by Stephen Ponder of the DR-920 model is posted at the message link below.
http://groups.yahoo.com/group/ultralightdx/message/16297

73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)




-----Original Message-----
From: Karl <krk63601@>
To: ultralightdx <ultralightdx@yahoogroups.com>
Sent: Sun, May 26, 2013 3:42 pm
Subject: [ultralightdx] Considering a transplant...Not for me, my radio.






Hello all. I own a Tecsun DR-920 radio, and all things considered, it's not a bad piece of kit. I am considering doing a transplant though, to both increase gain, and give me deeper nulls in an effort to combat some really miserable QRN I'm experiencing here in my "geezer flat". I have a few questions I'd like to run your way, before embarking on the project.
1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions?
2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions?
3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod?
Well, I guess that's all my questions for now. Thanks to all for any input you can offer, Karl


Re: Considering a transplant...Not for me, my radio.

Karl <krk63601@...>
 

Thanks for the input Gary. I agree, out of the box, this thing was a real dog. However, after a very careful alignment (your instructions in the "Files" section [thank you], and then-some) I'm getting pretty good performance barefoot at night. With my Hula-Loop antenna, Mexicans and Canadians are regular visitors, and quite listenable, though that large loop is rather unwieldy in my small apartment. I monitored the aftermath of the Moore tornado as though it were local, though I'll admit that Missouri to Oklahoma is no great stretch. Selectivity does need improvement. Perhaps instead of a transplant I'll go with a different idea. I've been kicking around the idea of using a tuned ferrite loop antenna as the tank circuit for an Armstrong regen, picking up the RF prior to detection, as a combo antenna/q-multiplier. Any thoughts? Why am I sticking with the DR-920? Well, to kinda paraphrase Donald Rumsfeld, you fight with the army you've got, or in my case listen with what you have, and make the best of it. By the way, I've added SSB and CW to the DR-920 by means of a little Ten-Tec BFO kit. For $20.00 including shipping, and a half hour assembly time, it's an excellent addition. Very stable if you put it in a little metal box. I've also made an active antenna using their 1001 preamp, but that didn't work out as well as the BFO. Unless I decoupled it to the point of uselessness, it overloaded the receiver. As more and more broadcasters abandon SW to the conspiracy nuts and religious fanatics, I find myself listening more and more to MW, and it's proving to be fun. I just need to get a better handle on the QRN problem here. Every geezer here has a noisy computer or TV, and CFLs out the wazoo, and going out to the RFI quiet state park isn't always convenient. Thanks again for your input, Karl

--- In ultralightdx@yahoogroups.com, D1028Gary@... wrote:


Hello Karl,

Thanks for your interest in a loopstick antenna transplant for the Tecsun DR-920 portable.

<<< 1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions? >>>

To be perfectly honest, Karl, the DR-920 is a rather poor model to choose for a loopstick transplant. As an analog model (with digital readout) having a reputation for rather poor AM selectivity, adding a more sensitive loopstick would exacerbate the model's selectivity problem. Analog Ultralights can be suitable candidates for loopstick transplants if they have reasonable stock selectivity and crunch resistance (such as the Sony SRF-39FP and Tecsun R911 analog models, among others), but the DR-920 definitely does not fall in this category.

<<< 2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions? >>>

If you decide to proceed with the transplant project anyway, the procedure would consist of winding two new coils on your larger ferrite rod with inductances matching the two stock coils (420 uh and 75 uh). The two new coils should also be positioned in a manner resembling the stock coils (i.e. at the same approximate positions on the larger rod). The quality of the wire that you use will determine the final sensitivity of your replacement loopstick (i.e. high sensitivity for larger diameter Litz wire, moderate sensitivity for medium diameter Litz wire, and lower sensitivity for enamel wire).

<<< 3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod? >>>

"Slider" coils are never necessary in an analog radio design. Simply wind fixed coils with inductances matching the two stock coils, and transplant the loopstick into the circuitry in place of the two stock coils (at the same four connection points). In the DR-920, though, you really shouldn't expect too much improvement from such a project. The DR-920 was a model purchased for the 2009 Ultralight Radio Shootout, but was dropped from contention because of poor AM performance relative to the other Ultralight models. A mini-review by Stephen Ponder of the DR-920 model is posted at the message link below.
http://groups.yahoo.com/group/ultralightdx/message/16297

73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)




-----Original Message-----
From: Karl <krk63601@...>
To: ultralightdx <ultralightdx@yahoogroups.com>
Sent: Sun, May 26, 2013 3:42 pm
Subject: [ultralightdx] Considering a transplant...Not for me, my radio.






Hello all. I own a Tecsun DR-920 radio, and all things considered, it's not a bad piece of kit. I am considering doing a transplant though, to both increase gain, and give me deeper nulls in an effort to combat some really miserable QRN I'm experiencing here in my "geezer flat". I have a few questions I'd like to run your way, before embarking on the project.
1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions?
2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions?
3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod?
Well, I guess that's all my questions for now. Thanks to all for any input you can offer, Karl


Re: Considering a transplant...Not for me, my radio.

Gary DeBock
 

Hello Karl,
 
Thanks for your interest in a loopstick antenna transplant for the Tecsun DR-920 portable.
 
<<<    1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions?   >>>
 
To be perfectly honest, Karl, the DR-920 is a rather poor model to choose for a loopstick transplant. As an analog model (with digital readout) having a reputation for rather poor AM selectivity, adding a more sensitive loopstick would exacerbate the model's selectivity problem. Analog Ultralights can be suitable candidates for loopstick transplants if they have reasonable stock selectivity and crunch resistance (such as the Sony SRF-39FP and Tecsun R911 analog models, among others), but the DR-920 definitely does not fall in this category.
 
<<<   2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions?   >>>  
 
If you decide to proceed with the transplant project anyway, the procedure would consist of winding two new coils on your larger ferrite rod with inductances matching the two stock coils (420 uh and 75 uh). The two new coils should also be positioned in a manner resembling the stock coils (i.e. at the same approximate positions on the larger rod). The quality of the wire that you use will determine the final sensitivity of your replacement loopstick (i.e. high sensitivity for larger diameter Litz wire, moderate sensitivity for medium diameter Litz wire, and lower sensitivity for enamel wire).
 
<<<    3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod?   >>>
 
"Slider" coils are never necessary in an analog radio design. Simply wind fixed coils with inductances matching the two stock coils, and transplant the loopstick into the circuitry in place of the two stock coils (at the same four connection points). In the DR-920, though, you really shouldn't expect too much improvement from such a project. The DR-920 was a model purchased for the 2009 Ultralight Radio Shootout, but was dropped from contention because of poor AM performance relative to the other Ultralight models. A mini-review by Stephen Ponder of the DR-920 model is posted at the message link below.  
 
73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)
 
 

-----Original Message-----
From: Karl
To: ultralightdx Sent: Sun, May 26, 2013 3:42 pm
Subject: [ultralightdx] Considering a transplant...Not for me, my radio.

 
Hello all. I own a Tecsun DR-920 radio, and all things considered, it's not a bad piece of kit. I am considering doing a transplant though, to both increase gain, and give me deeper nulls in an effort to combat some really miserable QRN I'm experiencing here in my "geezer flat". I have a few questions I'd like to run your way, before embarking on the project.
1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions?
2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions?
3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod?
Well, I guess that's all my questions for now. Thanks to all for any input you can offer, Karl


Considering a transplant...Not for me, my radio.

Karl <krk63601@...>
 

Hello all. I own a Tecsun DR-920 radio, and all things considered, it's not a bad piece of kit. I am considering doing a transplant though, to both increase gain, and give me deeper nulls in an effort to combat some really miserable QRN I'm experiencing here in my "geezer flat". I have a few questions I'd like to run your way, before embarking on the project.
1) Is bigger always better, or is there a "break-over point" where bigger is just, well, bigger? I purchased some ferrite cores from a Chinese vendor on eBay. He couldn't tell me the type (when I asked the material type, his response was "metal"), so I'm keeping my fingers crossed in that regard. They each measure .990"x.450", with a .170" hole in the middle. I have twenty of them. I was thinking about 12", but could go to almost 20". Opinions?
2) I live on a very tight fixed income. Litz wire is out of my budget, but I do have 200' of #26 enameled wire. If I use the enameled wire, am I just wasting my time? I've measured the stock coil, L1=420uH, and L2=75uH. Again, opinions?
3) If I do proceed with the project, should the new coil be wound as a "slider", or should it be in a fixed position on the rod?
Well, I guess that's all my questions for now. Thanks to all for any input you can offer, Karl


Newfoundland Ultralight Radio Log May 26

Allen Willie
 

Hello To All

With the current solar disturbance occuring there were several Brazilian stations audible at good levels last evening. however it wasn't until early this morning that anything new was heard

1400 - WOND - Pleasantville, New Jersey 8:00 UTC 5/26/13 ID " AM 14 Hundred WOND " then into ABC News at TOH ( heard under CBG (CBC Station ) in Gander, Newfoundland )


Ultralight Station # 1050


Receiver: SRF-M37W barefoot



Good DX

Allen Willie
Bristol's Hope, Newfoundland
47:43N 53:11W


Newfoundland Ultralight Radio Logs May 21-22

Allen Willie
 

Hello All,

More recent "new" ones added to the Ultralight log as follows:


873 khz - IRAN - IRIB various tx's 23:45 UTC 5/21/13 Koranic chants , Farsi talk, ment. Iran
Ultralight Station # 1047 Trans-Atlantic Station # 456


840 khz - PUERTO RICO - WXEW Yabucoa Victoria 840 1:18 UTC 5/22/13 Victoria ID's in Spanish,Sports covverage, ment of San Juan, Caribbean
Ultralight Station # 1048 Latin Station # 199


1380 khz - WWMI - St. Petersburg, Florida 8:00 UTC 5/22/13 Radio Disney ID's , promos, music (mixing with WMYF in New Hampshire)
Ultralight Station # 1049

I have also posted a video to YouTube featuring the audio heard of Sudan National Radio on 1296 khz Reiba using the SRF-M37W at about midnight Newfoundland time last night.

http://www.youtube.com/watch?v=pGcVyCz0rRo



Receiver: SRF-M37W barefoot


Good DX

Allen Willie
Bristol's Hope, Newfoundland
47:43N 53:11W


Radio shows FM sens < 2.5 µV

Marc Coevoet
 

Hello,

The other silabs radios show 3µV.

I was looking for Kchibo on ali:

http://www.aliexpress.com/item/Retail-Wholesale-Kchibo-KK-D210-Multi-Band-DSP-Radio/506471649.html



Kchibo KK-D210 Multi Band DSP Radio

Not yet a message in the mail archives ..


Frequency Modulation (FM) :64-108Mhz
Medium wave (MW) :522-1710Khz (9KHz step)
Short-wave (SW) :2.30-21 .85 MHz
The number of radio frequency memory (total 90)
FM (FM): 30
MW (medium wave): 30
SW (short wave): 30
Noise limited sensitivity
Frequency Modulation (FM): better than 2.5 uV
Medium wave (MW): better than 3mV / m
Short-wave (SW): better than 30 uV
Signal to Noise Ratio
FM signal to noise ratio: better than 50dB
MW signal to noise ratio: better than 45dB
Choose single-signal performance: better than 40dB
Power supply: 3 V DC
Built-in Battery: 2 AA batteries
External power supply: 3 V 300mA
Maximum current consumption: less than 200mA
Maximum output power≥ 100mW
Machine speaker: Φ57mm/8Ω/0.25W
External headset: Φ3.5mm32Ω
Size: 116*70*23mm



Marc
--
The "Penguin" has arrived - and he's not going away - ever.
What's on Shortwave guide: choose an hour, go!
http://shortwave dot tk
700+ Radio Stations on SW http://swstations dot tk
300+ languages on SW http://radiolanguages dot tk


Re: Is 555 ZIZ gone again?

MarkWA1ION
 

ZIZ is off, per Dave Marthouse on the NRC list:

<<
I have an amateur radio friend who lives on St Kitts and he informed me a
few weeks back that 555 was down. He didn't know what the reason was.
Their fm station is still up.

Dave Marthouse
dmarthouse@gmail.com
--- In ultralightdx@yahoogroups.com, "MarkWA1ION" <MarkWA1ION@...> wrote:

I have not noted 555 ZIZ St. Kitts lately, even when I use an north-null cardioid antenna that reduces pest 560 WGAN to the night levels of other stations on that channel (chiefly WFIL, WQAM, WHYN, and Cuba).

This is the case even at times that 820 TBN (R. Paradise), 800 PJB, 780 R. Coro, the 580 & 940 Puerto Ricans, and other stations in that general region are doing well.

ZIZ had been off air quite a while and then back on, seemingly at less power, a few months ago.

The station's website <http://radio.zizonline.com/> still shows 555 kHz AM as well as 96.1 and 95.9 MHz FM.

Is anyone on this list in the eastern Caribbean area or, lacking that, know of a remote online receiver that does a good job covering that area at least on night skywave if not all day?

Mark Connelly, WA1ION
South Yarmouth, MA, USA


Is 555 ZIZ gone again?

MarkWA1ION
 

I have not noted 555 ZIZ St. Kitts lately, even when I use an north-null cardioid antenna that reduces pest 560 WGAN to the night levels of other stations on that channel (chiefly WFIL, WQAM, WHYN, and Cuba).

This is the case even at times that 820 TBN (R. Paradise), 800 PJB, 780 R. Coro, the 580 & 940 Puerto Ricans, and other stations in that general region are doing well.

ZIZ had been off air quite a while and then back on, seemingly at less power, a few months ago.

The station's website <http://radio.zizonline.com/> still shows 555 kHz AM as well as 96.1 and 95.9 MHz FM.

Is anyone on this list in the eastern Caribbean area or, lacking that, know of a remote online receiver that does a good job covering that area at least on night skywave if not all day?

Mark Connelly, WA1ION
South Yarmouth, MA, USA


Re: New Tecsun Model Found at eBay

Vimal
 

This Tecsun R-909 was
Posted on January 14, 2011 by admin on
Shortwave Radio Index
http://swling.com/db/2011/01/tecsun-r-909/

12541 - 12560 of 33693