Date   

ULR DX........BEACONS.......NEW Beacon heard during DAYLIGHT HOURS.............

robert ross
 

Hi Guys:

Just goofing around this afternoon after shoveling the Snow out of the Driveway.......... again!! Tuned around on the NDB Beacon Band just to see what was doing during DAYLIGHT Hours...and I was rewarded with a NEW BEACON!!! Didn't hear much of anything else erxcept for the couple of Locals I have and another about 150 Miles North of me. As I was approaching the Top of the Band...I was just about to pack it in for lack of Interest in a DEAD BAND....when I heard this one popping through. It's a RELOG for the OVERALL LOG...But New Beacon # 73 heard for the ULR LOG!!

RADIO USED...................TECSUN PL-380 ULR with DeBock Frankensteiner 7.5 Inch Ferrite Antenna

ULR BEACON TOTALS are now........................73 Beacons Heard
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

73...................ROB VA3SW

Robert S. Ross
London, Ontario CANADA

*************************************************************************************

408 HBD Hubbard, OHIO Feb/24/11 1950 UTC 128 Miles

ROSS, ONT. ULR BEACON # 73

**************************************************************************************


Re: Ferrite Sleeve Loop (FSL) antenna tests

Pollock,Raphael E <rpollock@...>
 

Hi Kevin!

 

Thank you very much for the email report below. So now I am in a bit of a quandary, and will seek your and other experts’ advice. How big a diameter aperture, if you will, would be optimal for a ferrite sleeve? I suppose, just like an air core loop (and putting aside size/weight/mounting hardware practicality issues for the moment) that larger is better although there is no doubt a trade-off point between more raw gain versus depth of nulls versus height and width of Q. And how long is optimal length for the ferrite rods themselves relative to the diameter of the aperture? And which type of ferrite is best? Good old material 61 (for MW), 33 (for LW)? Twenty 8 inch Amidon material 61 ferrite rods will weigh quite a bit, cost $300 plus S and H, and might be arrayed to give a 5 inch maximum diameter aperture.

 

Do you have a sense as to how you will proceed? I still am not sure how my 19” 125 mu 660/46 Litz wrapped ferrite rod antenna would measure up to an FSL optimized for MW reception. I am certain that the biggest improvement in reception I might achieve would consist of finding a nice RFI-free location somewhere on a Texas Gulf Coast beach rather than building a new antenna. But like you I do most of my listening indoors at home. I know I have barely scratched the surface of what I can hear with my current set up (will need to start actually logging my dx!)—but I have yet to meet anyone in our radio hobby who is not eager for that next improvement in their listening post.

 

Thank you for leading the way with the experimentation; as always, I am looking forward to your design thoughts and your listening results…

 

Raph Pollock

 

From: ultralightdx@... [mailto:ultralightdx@...] On Behalf Of dhsatyadhana
Sent: Thursday, February 24, 2011 1:03 PM
To: ultralightdx@...
Subject: [ultralightdx] Ferrite Sleeve Loop (FSL) antenna tests

 

 

Hi all:

I finally got home from vacation and got some daylight hours to compare my recently-completed Ferrite Sleeve Loop (FSL) antenna with a couple other antennas in my arsenal. As discussed below, this is indeed a great little antenna.

My FSL consists of 26 small (62x12x4 mm, about 2.5 inches long) ferrite bars, purchased from ebayer KWTubes, presumably made for small transistor radios back in the 80's in Russia. These ferrites are wrapped around a standard oatmeal container 4 inches in diameter, and about 40 turns of 175/46 Litz around this sleeve of ferrites makes for a 550 uH coil. It is tuned with a 2x335 pf mini variable capacitor (Q>500) from eBayer zlowe7. Pictures of it during construction can be seen in the Photos section here on the Group, in the "Ferrite Sleeve Antennas" subfolder.

As FSLs go, this is quite small in diameter, ferrite thickness and (especially) ferrite length, and the Litz wire is not that well suited for lower frequencies (especially the LW band), but that is all that I have on hand at the moment.

I put the FSL up against two other passive antennas:
- a 18 inch (800 mu) "Monster" ferrite from Stormwise, which has a 3900 uH LW coil made from ~200 turns of 105/40 Litz wire, and a 330 uH MW coil made from 40 turns of 175/46 Litz wire. Both are tuned with a 2x335 pf mini variable capacitor as above.
- a 20-inch diagonal (14x14 inch) "Crate Loop", a standard box loop which has 24 turns of #16 stranded speaker wire, the coil having a Q of about 200. It is tuned with a good air variable capacitor from Crystal Radio Supply. This competed only on the MW band.

As can be seen in the results below, the little FSL was somewhat behind the much larger crate loop, but always at least equal to, and usually noticeably superior to, the Monster Stick: for marginal stations, it made the difference between recognition and not. It is a very quiet antenna, and Q (tuning sharpness) is much better on the FSL; nulls are quite good as well. During informal outdoor testing last week, the FSL was even further superior to the Monster Stick: I enthusiastically characterized it as blowing the Monster Stick out of the water; "a whole lot better" may be more accurate. At any rate, being inside an RF-rich townhouse apparently levels the playing field a bit.

This particular FSL is literally not much bigger than two stacked hockey pucks, but can pull the DX in like something many, many times larger. Graham Maynard, who recently published this design, estimates that an FSL with proper ferrites (he used ferrite rods which were 4 inches long and 3/8 inch diameter) performs about as well as a standard box loop approximately ten times the size; based on my unit, that seems like a reasonable estimate. The other FSL that I know of, Steve Ratzlaff's 5" diameter unit with about forty 8" ferrite rods, is incredibly powerful, as can be seen by his recent cross-country NDB loggings with his PL-380 (and light aircraft flying overhead being mysteriously pulled off course?).

These antennas require an investment in ferrites, but I find the results to be very impressive, and therefore worth it. As a result, I have larger ferrites on order, and plan to build a significantly larger FSL that should really pull in the signals, and will be compared to other antennas: to be continued!

Thanks – Kevin S
Bainbridge Island, WA

- - - - - - -

Test Data

Today is a clear, cold day here, and a couple hours after local sunrise there are a few nice stable, weak targets. The target stations were evaluated on a passively-coupled Tecsun PL-380 on the following scale: 0 (nada), 1 (trace), 2 (occasional words/tones), 3 (weak but discernible), 4(good), 5(local-like):

200-YJ:
Barefoot – 0
Monster Stick – 3
FSL – 3.5

266-VR:
Barefoot – 0
Monster Stick – 4
FSL – 4

326-DC:
Barefoot – 0
Monster Stick – 3.5 but noisy
FSL – 3.5 and quieter

400-QQ:
Barefoot – 0
Monster Stick – 2, noisy
FSL – 3, quieter

590-KUGN:
Barefoot – 1
Monster Stick – 3
FSL – 3.5
Crate - 4

900-CKMO:
Barefoot – 0
Monster Stick – 1.5
FSL – 2
Crate – 2.5

1070-CFAX:
Barefoot – 2
Monster Stick – 3
FSL – 3.5
Crate - 4

1650-Vashon TIS:
This was conducted a week ago, when the FSL had a smaller coil and tuned from 260 to 1700 khz. The high-Q FSL won this shoot-out, because it was better able to separate out this weak station from 5-10 kW locals on 1590 and 1680 which are only about 2-3 miles away, and generally make the X-band a no-man's land here during the day. The Crate Loop did OK, and the Monster Stick didn't really help much at all.


Ferrite Sleeve Loop (FSL) antenna tests

Kevin Schanilec
 

Hi all:

I finally got home from vacation and got some daylight hours to compare my recently-completed Ferrite Sleeve Loop (FSL) antenna with a couple other antennas in my arsenal. As discussed below, this is indeed a great little antenna.

My FSL consists of 26 small (62x12x4 mm, about 2.5 inches long) ferrite bars, purchased from ebayer KWTubes, presumably made for small transistor radios back in the 80's in Russia. These ferrites are wrapped around a standard oatmeal container 4 inches in diameter, and about 40 turns of 175/46 Litz around this sleeve of ferrites makes for a 550 uH coil. It is tuned with a 2x335 pf mini variable capacitor (Q>500) from eBayer zlowe7. Pictures of it during construction can be seen in the Photos section here on the Group, in the "Ferrite Sleeve Antennas" subfolder.

As FSLs go, this is quite small in diameter, ferrite thickness and (especially) ferrite length, and the Litz wire is not that well suited for lower frequencies (especially the LW band), but that is all that I have on hand at the moment.

I put the FSL up against two other passive antennas:
- a 18 inch (800 mu) "Monster" ferrite from Stormwise, which has a 3900 uH LW coil made from ~200 turns of 105/40 Litz wire, and a 330 uH MW coil made from 40 turns of 175/46 Litz wire. Both are tuned with a 2x335 pf mini variable capacitor as above.
- a 20-inch diagonal (14x14 inch) "Crate Loop", a standard box loop which has 24 turns of #16 stranded speaker wire, the coil having a Q of about 200. It is tuned with a good air variable capacitor from Crystal Radio Supply. This competed only on the MW band.

As can be seen in the results below, the little FSL was somewhat behind the much larger crate loop, but always at least equal to, and usually noticeably superior to, the Monster Stick: for marginal stations, it made the difference between recognition and not. It is a very quiet antenna, and Q (tuning sharpness) is much better on the FSL; nulls are quite good as well. During informal outdoor testing last week, the FSL was even further superior to the Monster Stick: I enthusiastically characterized it as blowing the Monster Stick out of the water; "a whole lot better" may be more accurate. At any rate, being inside an RF-rich townhouse apparently levels the playing field a bit.

This particular FSL is literally not much bigger than two stacked hockey pucks, but can pull the DX in like something many, many times larger. Graham Maynard, who recently published this design, estimates that an FSL with proper ferrites (he used ferrite rods which were 4 inches long and 3/8 inch diameter) performs about as well as a standard box loop approximately ten times the size; based on my unit, that seems like a reasonable estimate. The other FSL that I know of, Steve Ratzlaff's 5" diameter unit with about forty 8" ferrite rods, is incredibly powerful, as can be seen by his recent cross-country NDB loggings with his PL-380 (and light aircraft flying overhead being mysteriously pulled off course?).

These antennas require an investment in ferrites, but I find the results to be very impressive, and therefore worth it. As a result, I have larger ferrites on order, and plan to build a significantly larger FSL that should really pull in the signals, and will be compared to other antennas: to be continued!

Thanks – Kevin S
Bainbridge Island, WA

- - - - - - -

Test Data

Today is a clear, cold day here, and a couple hours after local sunrise there are a few nice stable, weak targets. The target stations were evaluated on a passively-coupled Tecsun PL-380 on the following scale: 0 (nada), 1 (trace), 2 (occasional words/tones), 3 (weak but discernible), 4(good), 5(local-like):

200-YJ:
Barefoot – 0
Monster Stick – 3
FSL – 3.5

266-VR:
Barefoot – 0
Monster Stick – 4
FSL – 4

326-DC:
Barefoot – 0
Monster Stick – 3.5 but noisy
FSL – 3.5 and quieter

400-QQ:
Barefoot – 0
Monster Stick – 2, noisy
FSL – 3, quieter

590-KUGN:
Barefoot – 1
Monster Stick – 3
FSL – 3.5
Crate - 4

900-CKMO:
Barefoot – 0
Monster Stick – 1.5
FSL – 2
Crate – 2.5

1070-CFAX:
Barefoot – 2
Monster Stick – 3
FSL – 3.5
Crate - 4

1650-Vashon TIS:
This was conducted a week ago, when the FSL had a smaller coil and tuned from 260 to 1700 khz. The high-Q FSL won this shoot-out, because it was better able to separate out this weak station from 5-10 kW locals on 1590 and 1680 which are only about 2-3 miles away, and generally make the X-band a no-man's land here during the day. The Crate Loop did OK, and the Monster Stick didn't really help much at all.


Ultralight Longwave DX-- Three New NDB's

Gary DeBock
 

Hello All,

Beacon-chasing results here last night were closer to Rob's version
than Steve's, with a slight drop off noted in signals from the east. Three relatively close new beacons showed up on the 7.5" LW plug-in
loopstick PL-380 in the snowy back yard, though: 219-OMK (WA), 225-LWG
(OR), and 362-6T (AB). Because of local noise it's becoming necessary
to get out of the warm, comfortable house to have much luck at finding
new beacons, but of course this is all part of the charm and challenge
of chasing NDB's on a tiny pocket radio. Those of you considering a
jump onto the Beacon Bandwagon are advised to stock up on warm
clothing, before taking the plunge :-)

Current LW beacon totals are 129 stations in 9 states and 7 provinces.
Congratulations to Steve for receiving the 2 Quebec beacons, for a new
Province.

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


Re: Two More New Stations this Morning

bbwrwy
 

Congratulations on hearing the two new stations despite the thunderstorms. Listening in our neck of the woods wasn't too easy this morning.

I hope you're enjoying DXing with the ultra-ultralight receiver. It is definitely a "mighty mite".

Good DX.

Richard.

Richard Allen
36°22'51"N / 97°26'35"W
(near Perry OK USA)


Two More New Stations this Morning

kirk74601 <kirk74601@...>
 

Despite the thunder rolling and the lightning crashes, two more new stations were hrd here this morning on my new T615. This time I did use the SAT w/ it to help pull enough sig to hopefully overcome some of the QRN. I'd like to thank Richard Allen for the tip on the first logging. Thanks, Richard!

1190, WOWO, Ft. Wayne, IN, 1327 UTC, 02/24/11, surprisingly (and luckily!) hrd an ID right after t/in, "on newstalk 1190, WOWO." Then lcl wx for the Ft. Wayne area. Shortly lost to the sta listed below.

1190, KQQZ, St. Louis, MO, 1335 UTC, 2/14/11, classic country mx. "The one not afraid to show our ___, then a "1190, KQQZ" jingle. G sig for about 10 minutes. ULR Sta #735

That's it from here. 73 everyone!

Kirk Allen
Ponca City, OK


Re: My First New Station Logged on a Sony T615

Kevin Schanilec
 

Welcome to the T615 cadre, Kirk! Too bad the T615 doesn't have an AM Stereo chipset - that would have been even better on that catch :-)

Kevin S

--- In ultralightdx@yahoogroups.com, "Kirk" <kirk74601@...> wrote:

Well thanks to Rob Ross, I'm now the proud new owner of a Sony T615 receiver!! I've not put in a lot of listening time with it yet, but you can be assured I will as time goes by! Last night I logged my first new station using the T615 barefoot.

1580, XEVAB, Valle de Bravo, Estado de Mexico, 0900-0945+UTC, 2/23/11, vy challenging listening as there were TWO stations in SS here, both sounding LAm. This one played a variety of vcl mx w/ vy few anmts. I finally had a lucky sig peak during a clear "Super Stereo Miled" ID. Ranchera mx followed the ID til tune-out. ULR Sta #733, LAm Sta #139. This is one I never hrd in Houston.

73 to everyone!!

Kirk Allen
Ponca City, OK


Re: The new Tecsun PL660 on MW with magnetic loop

Pollock,Raphael E <rpollock@...>
 

Thanks for this  reply Sarmento!  I took the liberty of looking at your blog site as well—very interesting reading! I will be sure to take you up on your generous offers when I am next in Brazil—I will send you advance warning. Likewise if you are ever in Houston I would be delighted to meet with you!!!

 


Raphael

 

From: ultralightdx@... [mailto:ultralightdx@...] On Behalf Of Sarmento
Sent: Monday, February 21, 2011 6:23 PM
To: ultralightdx@...
Subject: [ultralightdx] Re: The new Tecsun PL660 on MW with magnetic loop

 

 

Hi Raphael

Well, first of all when you come back to Rio, please tell me in advance, I will show you some wonderful places for a dxing and have some "dx-caipirinhas". (*)

As a matter of fact, it's possible to catch transoceanic signal on MW specially from Asia, Middle East and Africa, just using directional antennas to attenuate the local strong transmitters. We have lots of 100 / 150 / 200 Kwatts stations nearby.

But we have a special beach near from downtown, that is perfectly aligned with Africa.

You can see it using this link, look for "Marica" and you will observe its east-west orientation, that is unique in Rio de Janeiro. And its quite simple, just stretch the wire over the sand that direction is ok.

http://www.google.com/maps?ie=UTF8&hq=&hnear=Rio+de+Janeiro,+Brazil&ll=-22.40595,-42.797241&spn=2.945241,4.938354&t=h&z=8

At this beach is simple to use a mini-beverage 160 m or 200 meters length over the sand, just connecting the front to the ground using a standard copper rod buried. This way we can attenuate backward transmitters and receive strong transoceanic signals.

In Copacabana and Ipanema its also possible to listen to 1.503 kHz for instance, during gray line with only the internal loopstick of a Sangean ATS909 ou Sony 2010 when propagation is wide open to the east.

Some years ago, Angola and Botswana were easy catches before they shutdown, and today, Jedah and Riyadh  (Saudi Arab 1.512 and 1521 kHz) are my main beacons to check if propagation is really open, if so, lots of emissions from Dubai,

With a loop square of 80 cm (length of side) is possible to listen to transoceanic stations, but the main concern is that local transmitter are located right back (west-east) so nulling is not possible on some frequencies.

Spain is also a possibility, like 684 kHz, but we have a local pest on this frequency that is very hard to null, only a well tuned mini-beverage can get Spain.

France Info on 1.557 kHz with 300 Kwatt is also heard during gray line and then, after 0300 UTC depending on the season.

Some old and present catches on :

http://www.sarmento.eng.br/MW.htm

Regards

Sarmento

(*) famous Brazilian drink adapted to RF by Rocco Cotroneo

 

 


--- In ultralightdx@..., "Pollock,Raphael E" wrote:
>
> Thanks Sarmento. I like the appearance of the 660. I have the 380 and 390. The 390 is my work horse radio for travelling and bedside listening due to the larger ferrite bar antenna. I have been using the Grundig Satellit 750 for most of my MW Dxing work as well as for ferrite bar antenna experimenting. As always, I enjoy your emails and videos. One question I have always wondered about, having visited your wonderful city several times, is whether you can easily hear Africa on MW from the beaches at Ipanema or elsewhere in Rio? It is a relatively short trans-Atlantic distance to the West coast of Africa from Rio...
>
> Best regards;
>
> Raphael
>
> From: ultralightdx@... [mailto:ultralightdx@...] On Behalf Of Sarmento
> Sent: Monday, February 21, 2011 4:02 PM
> To: ultralightdx@...
> Subject: [ultralightdx] Re: The new Tecsun PL660 on MW with magnetic loop
>
>
>
> Hi Raphael
>
> I have also tested the PL660 against the Sangean ATS909 and I focused specific on the synch mode.
>
> And it really works, specially to attenuate interference from adjacent stations.
>
> I have posted more videos to demonstrate its performance on field, although I faced a minor electric noise on higher frequencies, but I think the demo is ok.
>
> It is not a fraction of the sycnh of the legend Sony 2010 when working MW, but it's very similar to that of Sony 7600GR, not so good, but it is really effective when used together with the narrow filter.
>
> For fading or faint signals, the 7600GR is better.
>
> Please, access the links:
>
> http://www.youtube.com/watch?v=V64d_cuRIJw
>
> http://www.youtube.com/watch?v=jF4KBwyIxMk
>
> http://www.youtube.com/watch?v=X4vv-lI94dI
>
> I made good catches like Philippines, Iran and other countries, using just a piece of wire as you can see.
>
> Sarmento
> --- In ultralightdx@..., "Pollock,Raphael E" rpollock@ wrote:
> >
> > Dear Sarmento: Thank you very much for the Youtube video. I am wondering if you have a feel for the effectiveness of the synch function on the PL 660?
> >
> > Raphael
> >
> > From: ultralightdx@... [mailto:ultralightdx@...] On Behalf Of Sarmento
> > Sent: Sunday, February 20, 2011 8:31 PM
> > To: ultralightdx@...
> > Subject: [ultralightdx] The new Tecsun PL660 on MW with magnetic loop
> >
> >
> >
> > Hi,
> >
> > I'm not sure if the new Tecsun PL660 is considered an ultra light receiver, but I have made minor changes in my magnetic loop antenna for MW, and I have made some tests comparing it to a loop square of 80 centimeters (length of side), and the results are very similar
> > The PL660 is small and offers good performance for its size and class, and it's an opportunity to test its performance on MW using loop antennas, specially small ones like this as we can get it everywhere to make a mini on man dx-camp.
> > Using a Tecsun PL660 to make a band scan on the x-band, I have listened to Argentine stations all over the channels, starting on 1610 kHz up to 1700 kHz.
> > I posted a video on Youtube to show the difference of the performance of the internal antenna and the ferrite loop.
> > The videos links:
> > http://www.youtube.com/watch?v=t2DyOkXLxjk
> > http://www.youtube.com/watch?v=xm_GRkTaU6U
> > Regards
> > Sarmento Campos - Rio de Janeiro
> >
>


Re: Read your message before it gets deleted!

Kevin Schanilec
 

Hi Michael/all:

This person joined earlier today for the express purposes of posting spam, and may have just set the record for the shortest length of time being a member of the Group: bye bye!

Kevin S
Moderator

--- In ultralightdx@yahoogroups.com, "Michael" <michael.setaazul@...> wrote:

Did everybody get this typical email-address cloned msg ???
Once in a net, it will doubtless recur :-((

at and dot inserted by me

Michael UK


----- Original Message ---------------------------------------------------------------------

From: "carljhayfriends" <carljhayfriends a t y a h o o d o t com>
To: <ultralightdx@yahoogroups.com>
Sent: 24 February 2011 11:59
Subject: [ultralightdx] Read your message before it gets deleted!


Read your message left by Kelly before it gets deleted!
http://llkia.zoomshare d o t c o m/files/friend.h t m


Re: Read your message before it gets deleted!

Michael <michael.setaazul@...>
 

Did everybody get this typical email-address cloned msg ???
Once in a net, it will doubtless recur :-((

at and dot inserted by me

Michael UK

----- Original Message ---------------------------------------------------------------------

From: "carljhayfriends" <carljhayfriends a t y a h o o d o t com>
To: <ultralightdx@yahoogroups.com>
Sent: 24 February 2011 11:59
Subject: [ultralightdx] Read your message before it gets deleted!


Read your message left by Kelly before it gets deleted!
http://llkia.zoomshare d o t c o m/files/friend.h t m


NE Oregon ULR NDBs, Wednesday night

Steve Ratzlaff <steveratz@...>
 

Another night with fairly good conditions, favoring northeastern Canada. Two Quebec beacons heard, for a new 8th province. Static came up around 10:30 p.m. local and kept increasing until it was a problem even with the small receiving antenna. 353 LLD Hawaii was heard around 11p.m.; no sign of 391 DDP Puerto Rico this evening. 402 M3,SK has a non-standard 1020 Hz modulation but has a standard Canadian dash, though the dash occurs just before the ident (DBID) instead of the usual right after the ident (DAID)--a rather unique Canadian beacon. Both Quebec beacons started out as a faint DAID heard; both required sitting on them for about 10 minutes each but eventually faded up to reasonable copy. 222 total. (Trans-polar LWBC 189 Iceland at decent level around 0500 utc but not heard on a ULR or indoor antenna.) :)
Steve
NE Oregon
PL-380, Ferrite Sleeve Loop (8 x 5")

250 2J BC CAN 236 MI
379 ZEG AB CAN 573 MI
392 ML QC CAN 2228 MI
395 L7 SK CAN 746 MI
395 ULS KS 1017 MI
400 MDS SD 1025 MI
402 M3 SK CAN 570 MI
407 ZHU QC CAN 2128 MI
512 HMY OK 1307 MI


My First New Station Logged on a Sony T615

Kirk <kirk74601@...>
 

Well thanks to Rob Ross, I'm now the proud new owner of a Sony T615 receiver!! I've not put in a lot of listening time with it yet, but you can be assured I will as time goes by! Last night I logged my first new station using the T615 barefoot.

1580, XEVAB, Valle de Bravo, Estado de Mexico, 0900-0945+UTC, 2/23/11, vy challenging listening as there were TWO stations in SS here, both sounding LAm. This one played a variety of vcl mx w/ vy few anmts. I finally had a lucky sig peak during a clear "Super Stereo Miled" ID. Ranchera mx followed the ID til tune-out. ULR Sta #733, LAm Sta #139. This is one I never hrd in Houston.

73 to everyone!!

Kirk Allen
Ponca City, OK


ULR DX.......BEACONS.....2 NEW Beacons tonight.........

robert ross
 

Hi Guys:

Conditions not as good as last night..........Only managed to hear 2 new Beacons so far tonight.

RADIO USED...................TECSUN PL-380 ULR with Debock Frankensteiner 7.5 Inch Ferrite Antenna

ULR BEACON Log Totals are now...................72 Beacons Heard
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

73.................ROB VA3SW

Robert S. Ross
London, Ontario CANADA

***************************************************************************
273 ZV Sept. Isles, QUE. Feb/24/11 0240 UTC 500 Watts 864 MIles

432 IZN Lincolnton, NC Feb/24/11 0325 UTC 25 Watts 516 Miles

***************************************************************************


1590 WZRX test tone

bbwrwy
 

I checked 1590 kHz, at 2025 UTC, and "NewsPlus 1590", WZRX, Jackson MS, is again broadcasting a test tone. Expect to hear ABC News on the hour.

Their schedule shows they should be carrying the "Phil Valentine Show" to 0200-0600 UTC.

They were heard earlier broadcasting a Southern Mississippi University baseball game.

Good DX.

Richard.

Richard Allen
36°22'51"N / 97°26'35"W
(near Perry OK USA)


Re: size of litz wire for MW band

gmosherat
 

hmm.. I guess they edit out e-mail addresses. my e-mail provider is google.

Regards,
Gregory

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



Michael UK,

Contact me at gpsfool@... and I can send you some 40/44 Litz.

Regards,

Gregory

--- In ultralightdx@yahoogroups.com, "Michael" <michael.setaazul@> wrote:

For me, the Litz-issue is one the disincentives to experimentation.
Cost is a determinant issue. Litz is expensive. A longer,
thicker ferrite rod is currently unobtainable and would in any case
be very expensive. Neither do I have the real-estate for a beverage.
I may have to settle for more modest, uncompetitive uldx compromises.
I may well have suitable Litz in my junk-box, but have no way of assessing.
The suggested UK source of ferrite rods is known; but unfortunately
availability is delayed and length and diameter do not exceed what
I have in the junk-box and no way approach those available in the US.

Maybe my predestination is for homebrew shortwave - as long as it lasts.
I could, of course, build a big loop, but that would shout at my diminutive
SRF-59, which does not know that LW exits.

Michael UK


----- Original Message -------------------------------------------------------------------
From: "ferrite61" <dxrx@>
To: <ultralightdx@yahoogroups.com>
Sent: 23 February 2011 18:48
Subject: [ultralightdx] Re: size of litz wire for MW band


I would choose some thing "X"/46 as it is the right-sized strand of Litz wire for the AM-BCB. Litz wire that is "X"/44
is better suited for the NDB's (more precisely X/43 is ideal). Affordability is the key issue for most, as the price is
high compared to mamgnet wire (solid Cu).

Paul S. in CT


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

Which size litz wire works best for winding on a ferrite rod for MW (520-1710) band, 40/44, 100/44 or 175/46? I don't
have a meter for measuring inductance. Can anyone tell me approximately how many turns are required to get optimum
performance on a 3/8" X 4" ferrite rod?
Should the coil be centred on the antenna? I'm trying to replace the internal antenna on a PL380.

Thanks
Stew


Re: size of litz wire for MW band

gmosherat
 

Michael UK,

Contact me at gpsfool@gmail.com and I can send you some 40/44 Litz.

Regards,

Gregory

--- In ultralightdx@yahoogroups.com, "Michael" <michael.setaazul@...> wrote:

For me, the Litz-issue is one the disincentives to experimentation.
Cost is a determinant issue. Litz is expensive. A longer,
thicker ferrite rod is currently unobtainable and would in any case
be very expensive. Neither do I have the real-estate for a beverage.
I may have to settle for more modest, uncompetitive uldx compromises.
I may well have suitable Litz in my junk-box, but have no way of assessing.
The suggested UK source of ferrite rods is known; but unfortunately
availability is delayed and length and diameter do not exceed what
I have in the junk-box and no way approach those available in the US.

Maybe my predestination is for homebrew shortwave - as long as it lasts.
I could, of course, build a big loop, but that would shout at my diminutive
SRF-59, which does not know that LW exits.

Michael UK


----- Original Message -------------------------------------------------------------------
From: "ferrite61" <dxrx@...>
To: <ultralightdx@yahoogroups.com>
Sent: 23 February 2011 18:48
Subject: [ultralightdx] Re: size of litz wire for MW band


I would choose some thing "X"/46 as it is the right-sized strand of Litz wire for the AM-BCB. Litz wire that is "X"/44
is better suited for the NDB's (more precisely X/43 is ideal). Affordability is the key issue for most, as the price is
high compared to mamgnet wire (solid Cu).

Paul S. in CT


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

Which size litz wire works best for winding on a ferrite rod for MW (520-1710) band, 40/44, 100/44 or 175/46? I don't
have a meter for measuring inductance. Can anyone tell me approximately how many turns are required to get optimum
performance on a 3/8" X 4" ferrite rod?
Should the coil be centred on the antenna? I'm trying to replace the internal antenna on a PL380.

Thanks
Stew


ULR DX.........ONE NEW GRAVEYARDER @ Sunset tonight........

robert ross
 

Hi Guys:

Things have been a little slow here at Sunset lately, but tonight we squeezed out a New Graveyarder on 1230 Khz. Signal on this one was Great for such a Cluttered Frequency!! It is NEW for both the ULR and OVERALL LOGS!!

RADIO USED......................SONY SRF-T615 ULR Barefoot

ULR LOG TOTALS are now................915 Stations Heard
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ULR GRAVEYARDER # 91 Heard
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

73.......................ROB VA3SW

Robert S. Ross
London, Ontario CANADA

**********************************************************************************
1230 WFAS White Plains, NEW YORK Feb/23/11 1656-1701 EST EE GOOD
Bee Gees Song...."Night Fever" @ 1656 EST Tune In. ID given by Male DJ as
"Westchester's Soft Favorites WFAS" @ 1659 EST. Soft Instrumental Music til 1700 EST and
another ID as "This is AM 1230 WFAS White Plains-Westchester...It's 5 O'Clock".
Into News on Hour.

NEW STATION ULR # 915 ULR GY # 91 1 KW
ROSS, ONT.
***********************************************************************************


Re: size of litz wire for MW band

Gary DeBock
 

Michael, Roy and Paul,

DXers desiring the best performance from loopsticks should not have the
attitude of "just use whatever is in the junkbox," and those promoting
such a concept certainly do not bring any credit upon themselves.

There have been very detailed tests run on loopsticks of different
Litz wire/ ferrite bar combinations on both MW and LW frequencies for
the benefit of the Ultralightdx group, and such information is
available upon request. For those desiring a very sensitive loopstick
suitable for MW-DXing with any Tecsun DSP receiver, a 7.5" loopstick
model is described in the file posted at
( http://www.mediafire.com/?yummxhqeyjy . This 40/44 Litz wire 300
uh single-coil model has provided outstanding DXing results for many
DXers, including Richard Allen of Oklahoma, who has used it to receive
multiple TP's and TA's with his PL-310.

Those with limited financial means will find that almost any 7.5"
loopstick can be constructed with a total parts outlay of less than
$25, and if that seems excessive, there is extra material available
here for any motivated DXer who wishes to give it a shot.

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

-----Original Message-----
From: Michael <michael.setaazul@btopenworld.com>
To: ultralightdx <ultralightdx@yahoogroups.com>
Sent: Wed, Feb 23, 2011 2:44 pm
Subject: Re: [ultralightdx] Re: size of litz wire for MW band

 
Paul, thanks again for your concise responses.
I guess the upshot for those of us limited to junkbox means is,
as you say, "what´s on hand" is better than not-affordable-new.
I imagine performance may be less impressive than
with a 10-foot ferrite with ultimate litz, but probably quite
enjoyable. Which is what it is all about - I trust.

Last questions (maybe):-

Single-layer or bunched-up winding?
Centre or offset on whatever ferrite?

I deduce from former postings that,
for any wire or litz used, single layer
on centre of ferrite would be best.

Or should I take up knitting instead???

Michael UK

----- Original Message
----------------------------------------------------------

From: "ferrite61" <dxrx@am3-radio.us>
To: <ultralightdx@yahoogroups.com>
Sent: 23 February 2011 22:19
Subject: [ultralightdx] Re: size of litz wire for MW band

I meant it pretty much the way i said it... better to use whats on
hand, than buying new. New cost a lot more.

Paul S. in CT

--- In ultralightdx@yahoogroups.com, "Roy" <gstaples@...> wrote:

Thanks guys for all your help.
Paul are you saying that getting proper litz wire will not result
in much improvement over using a ferrite and coil
from an old junked radio or is it just that new litz wire costs so
much. I'm looking to make the PL380 as sensitive as
possible with an internal antenna.

Thanks
Stew

--- In ultralightdx@yahoogroups.com, "ferrite61" <dxrx@>
wrote:

In your case, take the fattest Litz wire on-hand and wrap 60
turns around your 3/8" diameter by 4" long stick.
Center the wire on the stick, and presume a winding length of 1.5".
This yields about 225 uH, just a little low for the
am-bcb. It will take 7 feet of wire including the connection. If your
piece of litz is longer, add 6-8 more turns
figuring 1.75" for the coil length. For 68 turns at 1.75" of winding
length the inductance increases to about 270 uH.
Having some litz, any litz in the junque-box, with a stick is
preferable to buying such. ;)

Paul S. in CT


Re: size of litz wire for MW band

ferrite61 <dxrx@...>
 

Single-layered and centered is the best option. In regards to my previous posts, if the coil length is shorter than i guessed, your inductance will increase. You would know this when the 60 turns is less than 1.5". That would allow a few more turns and stay within 1.5"... and get the higher uH that you need. Ideal would be if you had enough wire to wrap 70 turns in that 1.5".

Paul S. in CT

--- In ultralightdx@yahoogroups.com, "Michael" <michael.setaazul@...> wrote:

Paul, thanks again for your concise responses.
I guess the upshot for those of us limited to junkbox means is,
as you say, "what�s on hand" is better than not-affordable-new.
I imagine performance may be less impressive than
with a 10-foot ferrite with ultimate litz, but probably quite
enjoyable. Which is what it is all about - I trust.

Last questions (maybe):-

Single-layer or bunched-up winding?
Centre or offset on whatever ferrite?

I deduce from former postings that,
for any wire or litz used, single layer
on centre of ferrite would be best.

Or should I take up knitting instead???

Michael UK

----- Original Message ----------------------------------------------------------

From: "ferrite61" <dxrx@...>
To: <ultralightdx@yahoogroups.com>
Sent: 23 February 2011 22:19
Subject: [ultralightdx] Re: size of litz wire for MW band


I meant it pretty much the way i said it... better to use whats on hand, than buying new. New cost a lot more.

Paul S. in CT


--- In ultralightdx@yahoogroups.com, "Roy" <gstaples@> wrote:

Thanks guys for all your help.
Paul are you saying that getting proper litz wire will not result in much improvement over using a ferrite and coil
from an old junked radio or is it just that new litz wire costs so much. I'm looking to make the PL380 as sensitive as
possible with an internal antenna.

Thanks
Stew

--- In ultralightdx@yahoogroups.com, "ferrite61" <dxrx@> wrote:

In your case, take the fattest Litz wire on-hand and wrap 60 turns around your 3/8" diameter by 4" long stick.
Center the wire on the stick, and presume a winding length of 1.5". This yields about 225 uH, just a little low for the
am-bcb. It will take 7 feet of wire including the connection. If your piece of litz is longer, add 6-8 more turns
figuring 1.75" for the coil length. For 68 turns at 1.75" of winding length the inductance increases to about 270 uH.
Having some litz, any litz in the junque-box, with a stick is preferable to buying such. ;)

Paul S. in CT


Re: size of litz wire for MW band

Michael <michael.setaazul@...>
 

Paul, thanks again for your concise responses.
I guess the upshot for those of us limited to junkbox means is,
as you say, "whats on hand" is better than not-affordable-new.
I imagine performance may be less impressive than
with a 10-foot ferrite with ultimate litz, but probably quite
enjoyable. Which is what it is all about - I trust.

Last questions (maybe):-

Single-layer or bunched-up winding?
Centre or offset on whatever ferrite?

I deduce from former postings that,
for any wire or litz used, single layer
on centre of ferrite would be best.

Or should I take up knitting instead???

Michael UK

----- Original Message ----------------------------------------------------------

From: "ferrite61" <dxrx@am3-radio.us>
To: <ultralightdx@yahoogroups.com>
Sent: 23 February 2011 22:19
Subject: [ultralightdx] Re: size of litz wire for MW band


I meant it pretty much the way i said it... better to use whats on hand, than buying new. New cost a lot more.

Paul S. in CT


--- In ultralightdx@yahoogroups.com, "Roy" <gstaples@...> wrote:

Thanks guys for all your help.
Paul are you saying that getting proper litz wire will not result in much improvement over using a ferrite and coil
from an old junked radio or is it just that new litz wire costs so much. I'm looking to make the PL380 as sensitive as
possible with an internal antenna.

Thanks
Stew

--- In ultralightdx@yahoogroups.com, "ferrite61" <dxrx@> wrote:

In your case, take the fattest Litz wire on-hand and wrap 60 turns around your 3/8" diameter by 4" long stick.
Center the wire on the stick, and presume a winding length of 1.5". This yields about 225 uH, just a little low for the
am-bcb. It will take 7 feet of wire including the connection. If your piece of litz is longer, add 6-8 more turns
figuring 1.75" for the coil length. For 68 turns at 1.75" of winding length the inductance increases to about 270 uH.
Having some litz, any litz in the junque-box, with a stick is preferable to buying such. ;)

Paul S. in CT

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