Date   

Congratulations to Gary and my loggings with SRF-M37V

Allen Willie
 

First of all Congratulations ! to Gary on his success in possible hearing Australia from Grayland
 
My logs from here as follows:
April 20/08 - Logged on the SRF-M37V barefoot
 
23:22 UTC - 1008 khz - CANARY ISLANDS , R. Punto w/ Spanish commentary, R Punto mentioned ; good
 
22:23 UTC - 1053 khz - ENGLAND , TalkSport Radio w/ Engish  talk about new football stadium ; good - parallel to 1089 khz
 
23:25 UTC - 1134 khz - CROATIA , Voice of Croatia  with ID and commentary; good
 
23:32 UTC - 1341 khz - NORTHERN IRELAND , R. Ulster w/ ID and program promo about Jazz Festival ; fair
 
23:37 UTC - 1053 khz - LIBYA , Libyan Jamahiriya, Tripoli  w/ arabic chants ; strong over England on 1053
 
 
Allen Willie VO1-001-SWL
St. John's , Newfoundland
SRF-M37V barefoot


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Re: Aussie-531 Audio Heard on SRF-T615 Ultralight at Grayland

Guy Atkins
 

Hi Gary,
 
Hearing that probable Aussie on 531 with the stock T-615 is really cool!
 
I checked the Grayland Master logs (skillfully compiled and maintained by Chuck Hutton) as well as my own logs for 531. The Australian most often heard on 531 has been 2PM Kempsey in New South Wales, but there was one log by Walt Salmaniw of 4KZ Innisfail.
 
I had a log of 2PM in 2oo5, with a slogan of "Easy Listening 531". 
 
If the music you noted was "island" music or Maori style, it would almost certainly have been 1XPI Auckland, NZ.
 
Congrats again on the fine Ultralight catch!
 
73,
 
Guy Atkins
Puyallup, WA USA
 


Get yourself an SRF-59 (or a spare) for $9.99!!!

Dennis Gibson <wb6tnb@...>
 

Sony is selling refurbished SRF-59's for $9.99!!! I'm sure there's a
charge for shipping but what the hey. If I didn't already have an
SRF-39FP I'd pick up another one.

http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&productId=8198552921665089553&langId=-1yr

Gary - you've started the biggest craze in MW DX'ing in a couple of
decades; all because you were curious about how good a dinky radio
might be.


Re: Congrats to Gary on the AUSSIE on the Sony T615........

Dennis Gibson <wb6tnb@...>
 

I don't seem to have received the e-mail describing Gary's log of an
Aussie on a stock ULR (which one?).

Due to a major medical issue with my wife (she'll be fine eventually)
I've had less time to spin the dials. I need to get my Sonys up to
Gary to work his magic on.

--- In ultralightdx@..., Robert Ross <va3sw@...> wrote:

Gary:

Way to go Man.......that is great. Hopefully you can figure out
which
Aussie you had. Whichever one it is....that is amazing DX on a stock
ULR!!
I'm proud of you Gary.....all your work to promote the ULR Hobby has
paid
off with a World Class Logging on your Sony ULR!!

I had an Aussie on my Sony T615 this morning as well........I fell
asleep
on the couch while listening to the T615....and it fell on the
floor. When
I woke up..my Dog "TRAMMELL" .....who is an Austrailian Shepard (AKA An
Aussie).....was laying on the Radio!!! So I guess I'm the first
person in
Ontario to have an Aussie on his ULR!!! HAHAHHHA.........True story
Gary.....but my Aussie is greatly overshadowed by your GREAT Reception
from Grayland!!

Gary put your Team Canada hat on and parade around the
neighbourhood.......be proud !!

73.......ROB.

Robert S. Ross VA3SW
Box 1003, Stn. B.
London, Ontario
CANADA N6A5K1


Grayland Mini-DXpedition

Gary DeBock
 

Hello Guys,
 
     Sorry about the earlier blank message--  I tried to forward my original IRCA list post to the Yahoo Ultralightdx group site, which obviously didn't work.
 
     For those not subscribing to the IRCA list, a one-night DXpedition was made to Grayland, WA (about 2 hours driving time from here), primarily to test out the growing collection of hot-rodded Ultralight radios with 7", 14" and 20" loopstick transplants.  The idea was to have a "shootout" between the 14" and 20" SRF-39FP units, and a newly-created 19.5" ICF-2010 monster.. for ultimate sensitivity honors..
 
     The DX conditions were so good, however, that the stock SRF-T615 was used to make reception of eight TP's (JOAK-594, JOAB-693, JOIB-747, JOUB-774, JOBB-828, HLCA-972, HLAZ-1566, and VOA-1575 (Thailand).  But the best was yet to come.
 
     Around local sunrise (1305 UTC), things were quieting down, and it looked like the fun was over.  Then the monster 2010 started receiving weak audio from the South Pacific on 531, one of the "Aussie frequencies" that I had been instructed to monitor by experienced "Down Under" DXers.  The 531 signal, with music only, became stronger and stronger, until even the Sony SRF-T615 ultralight radio could receive it (weakly).  Unfortunately, there was no ID heard, so I could not claim a reception.  The signal, definitely coming from the South Pacific (due to loopstick bearing)  soon faded out, as did another Australian station with weak audio, 4QR-612, heard only on the monster 2010. On the IRCA list, various DXers have discussed what the 531 Aussie presumably was, but to me it's just an unID Australian, and a future target.
 
     The 14" and 20" loopstick-enabled SRF-39FP radios do have a sensitivity edge over the monster 2010, but without SSB capability to check carriers (and without digital readout to confirm a 531 frequency rather than a domestic 530 frequency), they were not used in this situation.  Anyway, the DXpedition as a whole was great fun, and hopefully more of you living near the coasts will try your DX luck overnight by the ocean! 
 
                                                                              73 and Good DX,
 
                                                                              Gary DeBock   .




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Congrats to Gary on the AUSSIE on the Sony T615........

robert ross
 

Gary:

Way to go Man.......that is great. Hopefully you can figure out which
Aussie you had. Whichever one it is....that is amazing DX on a stock ULR!!
I'm proud of you Gary.....all your work to promote the ULR Hobby has paid
off with a World Class Logging on your Sony ULR!!

I had an Aussie on my Sony T615 this morning as well........I fell asleep
on the couch while listening to the T615....and it fell on the floor. When
I woke up..my Dog "TRAMMELL" .....who is an Austrailian Shepard (AKA An
Aussie).....was laying on the Radio!!! So I guess I'm the first person in
Ontario to have an Aussie on his ULR!!! HAHAHHHA.........True story
Gary.....but my Aussie is greatly overshadowed by your GREAT Reception
from Grayland!!

Gary put your Team Canada hat on and parade around the
neighbourhood.......be proud !!

73.......ROB.

Robert S. Ross VA3SW
Box 1003, Stn. B.
London, Ontario
CANADA N6A5K1

Antique/Vintage Radio Enthusiast
Amateur Radio Stations VA3SW/VE3JFC

Defy Physics.....Play Table Tennis!! (Ping Pong with an Attitude)
«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»¥«¤»§«¤»¥«


Aussie-531 Audio Heard on SRF-T615 Ultralight at Grayland

Gary DeBock
 

 




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logs

Allen Willie
 

Logs last evening
 
April 20/08
 
1:01 UTC - 1377 khz - FRANCE ; Radio Info , Lille w/ Bill Withers song, french talk and sports scores; fair
 
3:14 UTC - 1494 khz - JORDAN ;  Radio Jordan ; Al Karanah w/ periodic commentary in arabic by man , mentions of Israel  ; mostly arabic chants for duration ; fair   
 
4:30 UTC - 750 khz - VENEZUELA ; YVKS, Caracas w/ commentator in Spanish w/ play by play of a game ; (under local CBGY ) fair
 
 
Allen Willie VO1-001-SWL
St. John's, Newfoundland
SRF-M37V barefoot


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Construction Activities

John H. Bryant <bjohnorcas@...>
 

I've finally finished the tile work and most of the rest of my home projects and I've been able to spend the last few days on Ultralight construction projects.

The first effort was to create the final dial for the National SRF-39 Table Model. I spent about a day on this using a signal generator for both the Western Hemisphere and Eastern dials. I spotted individual frequencies below 1000 and did each 50 kHz or so above... then interpolating. The FM dial was strictly listening, recording known frequencies and then SWAGing the dots on that dial.  I'm really pleased with the results. I can read the dial to the 9/10 KHz below 1000 with full confidence and can usually guess correctly above. I'm not sure just how much I'll even use this set to DX, but I've always wanted to make something like this. It was even more fun than I expected.  The radiating station names are on there just for decoration, tho' they also represent a decent hit list for me from the Northwest. Most of us have always loved the old radios with city or country names on the dial. I'm certainly no exception.


I also put together two identical cabinets from specimen wood. One, from 60 year old recycled Arkansas walnut, houses the radio. A second of identical dimensions is a speaker enclosure. I was originally going to house a small stereo amp and speakers cannibalized from an Ipod dock... to provide speaker-level volume for the SRF-39 and for my mp3 player, etc. However, despite Nick's good technical counsel, I managed to burn that little amp out immediately.  Since the unit cost me almost nothing and I managed to salvage the four little speakers, it wasn't a total disaster.  I eventually did a search on line and found Canakit in suburban Vancouver that makes a wonderful line of kits and assembled units. A "Walkman" stereo amp, 5 watts per channel, is on its way to me now. The speaker unit cabinet, out of salvaged tropical hardwood similar to ebony, will have the four little speakers in the front panel along with stereo controls, a power switch and a switch to throw the stereo output either to those four little speakers or out the back to a pair of outboard larger stereo speakers.  As soon as I get the stereo amp (late next week) installed, I'll post photos of both units.... I'm really pleased with how they both look and what testing I've done with the National SRF-39 hooked up to serious antennas, it looks to be an excellent DX receiver.

I had completed modifying my Sangean DT-200VX to accept an outside antenna a couple of weeks ago, but I'd delayed writing the article until I had the time and found the nerve to tackle the Eton E100  for a similar mod. You might remember that I'd gotten the back case off the e100 and been unable to go further in disassembling the radio.... I lost my nerve and tiptoed back out of the radio. Well, after a lot of thought and some more study of the interior photos posted on line by HongKongRadioer, I restarted the E100 project this morning. I had guessed correctly and things went reasonably well. If you know how, taking the radio apart is really not bad at all. Its a shame that Eton does not make Technical Manuals available. I took good pictures and will write up the disassembly instructions in the next day or two.

Installing an external antenna port inside the e100  case proved impossible with this tightly packed radio, but I was able to install a "PC board-type" phone jack mounted on the upper edge of the outside of the case.  This leads inside to the typical pick-up coil wrapped around the stock ferrite bar antenna. I've not had a chance to test this unit much, but it seems to work well on an outside antenna on at least the upper half of the dial. There seemed to be less sensitivity than I expected below 600 KHz. Also, when I briefly tried it late this afternoon, I noticed some overloading from my local daytimer (1 mile away), so I'm only cautiously optimistic about  performance of the e100 with an outside antenna. 

I did notice, though, that the e100 is PERFECT for a transplant of a larger rod. The coil on the stock ferrite bar is a simple single coil with connections only to each end of the coil (no center tap, etc.) The two solder points for the antenna coil are right in front of you as you open the back of the case.  It would be simplicity itself to unsolder the two wires from the board and solder in cabling to an appropriately sized coil on a much larger bar, outboard to the case... the Transplant strategy that Gary DeBock is pioneering.

Well, as you can see, I've been having loads of fun getting ready to return to the DX beaches of the NW. I'll upload that e100 disassembly information Monday.

Hope Gary DeB does only moderately well in his Grayland  visit :>)   

John B.
Stillwater, Oklahoma, USA
Rcvrs: WiNRADiO 313e, Eton e1, NRD-535(kiwa-mods)
Antennas: 700' NE/SW mini-Bev, Wellbrook Phased Array (pre-production version)


Ferrite bar vs air core -- where I'm headed

sloshatron <wa1gwh@...>
 

Thanks for the comments, John. Don't know where I'm heading! As it
turns out, I'm more of a tinkerer than MW listener.

I'm not sure I will replace the stock bar. On the UL Sprint survey I
indicated that I thought it should be considered that an electrically
stock set would be classed as (was it) barefoot? Anyways, not
unlimited. My set has very stiff tuning. I would not ever contest
with the original set. Just not fun. For the UL Sprint I used the
set stock, electrically speaking, but improved the tuning dial for
ergonometrics and to be able to calibrate it. But I had to enter as
unlimited because of this.

So I think that I will wait on the decisions of the authorities to
see how that turns out. If I can use it in the bottom class
(whatever it was called!) then I will try at least another contest
that way but with better mechanical tuning.

If I have to enter as unlimited then I may "improve" the antenna
circuit so that I do not have to twist two knobs (one of them a
booster).

This will all have to wait a while. The grass is growing and the
lawnmower is in peices in the basement. My garden space is only half
turned. And a host of other things!

73,

Garry


Re: IF Filters for the Sangean DT-210

Michael Slattery
 

Hi Richard

I'm currently not able to offer an opinion since I have no information
on the internal architecture of the PR-D5. I've tried to find a
service manual / schematic diagram on the net without success. If you
can somehow obtain this information then I will try to help.

--
Michael Slattery G8PNX
wildbear@...

On Thu, 17 Apr 2008 05:52:41 -0500, you wrote:

Sorry, Richard, I have no info/opinion on whether the filter that
MIchael used has broader applications in the Sangean line. Maybe
Michael has an opinion.

John B.


Hi John,

Do you know if this filter would improve selectivity on the larger
SANGEAN PR-D5 without suffering an insertion sensitivity loss?

--- On Wed, 4/16/08, John H. Bryant <bjohnorcas@...> wrote:
From: John H. Bryant <bjohnorcas@...>
Subject: [ultralightdx] IF Filters for the Sangean DT-210
To: ultralightdx@...
Date: Wednesday, April 16, 2008, 9:37 PM



In case you missed it, Michael Slattery, G8PNX, of Sheffield just
uploaded a very nice article on putting a much better IF filter in
the DT-210.
<http://groups.yahoo.com/group/ultralightdx/files/>http://groups.
yahoo.com/ group/ultralight dx/files/ Darn
creative solution to fitting in a lager component in an already
crowded case. Thanks very much, Michael... Excellent work!

John B.
Stillwater, Oklahoma, USA
Rcvrs: WiNRADiO 313e, Eton e1, NRD-535(kiwa- mods) + Flocka Ultralights
Antennas: 700' NE/SW mini-Bev, Wellbrook Phased Array (pre-production version)






Re: Pictures of ferrite bar and air core coils used for booster antenna tests

John H. Bryant <bjohnorcas@...>
 

Thanks for the photos, Garry.....  I assume that you are looking at the SRF-49's bar with the idea of directly substituting an air-core loop for the entire bar assembly??  I'd be interested to know if the bar and coils were/or not identical to the ones used on the SRF-39 and 59.  That bar is shown in the data sheet in our files section.

Keep up the good work!

John B.


At 01:23 AM 4/17/2008 +0000, you wrote:

I uploaded pictures of my test coils. They were each used with the
same variable cap for comparison as booster antennas with my SRF-49.
My previous post describes the test and procedure.

I was planning to show them in position with my SRF-49, but I've taken
the radio off the pine board and disassembled it to study the wiring of
the stock rod.

I'm not very Yahoo literate. Some time ago I set up a Yahoo ID and
being disgruntled once again at yet another ID and password to keep
track of I just typed in my favorite word for our noisy dishwasher.
Hence, I am now "sloshatron", much to my current embarassment because
it is coming up everywhere in this discussion group! (Inspired by The
Jetsons, TV show.)

Garry








Re: IF Filters for the Sangean DT-210

John H. Bryant <bjohnorcas@...>
 

Sorry, Richard, I have no info/opinion on whether the filter that MIchael used has broader applications in the Sangean line.  Maybe Michael has an opinion.

John B.







At 08:38 PM 4/16/2008 -0700, you wrote:

Hi John,

Do you know if this filter would improve selectivity on the larger SANGEAN PR-D5 without suffering an insertion sensitivity loss?

--- On Wed, 4/16/08, John H. Bryant wrote:
From: John H. Bryant
Subject: [ultralightdx] IF Filters for the Sangean DT-210
To: ultralightdx@...
Date: Wednesday, April 16, 2008, 9:37 PM



In case you missed it, Michael Slattery, G8PNX, of Sheffield just
uploaded a very nice article on putting a much better IF filter in
the DT-210. http://groups. yahoo.com/ group/ultralight dx/files/ Darn
creative solution to fitting in a lager component in an already
crowded case. Thanks very much, Michael... Excellent work!

John B.
Stillwater, Oklahoma, USA
Rcvrs: WiNRADiO 313e, Eton e1, NRD-535(kiwa- mods) + Flocka Ultralights
Antennas: 700' NE/SW mini-Bev, Wellbrook Phased Array (pre-production version)









Re: IF Filters for the Sangean DT-210

lrdheat
 

Hi John,

Do you know if this filter would improve selectivity on the larger SANGEAN PR-D5 without suffering an insertion sensitivity loss?

--- On Wed, 4/16/08, John H. Bryant wrote:
From: John H. Bryant
Subject: [ultralightdx] IF Filters for the Sangean DT-210
To: ultralightdx@...
Date: Wednesday, April 16, 2008, 9:37 PM



In case you missed it, Michael Slattery, G8PNX, of Sheffield just
uploaded a very nice article on putting a much better IF filter in
the DT-210. http://groups. yahoo.com/ group/ultralight dx/files/ Darn
creative solution to fitting in a lager component in an already
crowded case. Thanks very much, Michael... Excellent work!

John B.
Stillwater, Oklahoma, USA
Rcvrs: WiNRADiO 313e, Eton e1, NRD-535(kiwa- mods) + Flocka Ultralights
Antennas: 700' NE/SW mini-Bev, Wellbrook Phased Array (pre-production version)



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IF Filters for the Sangean DT-210

John H. Bryant <bjohnorcas@...>
 

In case you missed it, Michael Slattery, G8PNX, of Sheffield just uploaded a very nice article on putting a much better IF filter in the DT-210. http://groups.yahoo.com/group/ultralightdx/files/ Darn creative solution to fitting in a lager component in an already crowded case. Thanks very much, Michael... Excellent work!


John B.
Stillwater, Oklahoma, USA
Rcvrs: WiNRADiO 313e, Eton e1, NRD-535(kiwa-mods) + Flocka Ultralights
Antennas: 700' NE/SW mini-Bev, Wellbrook Phased Array (pre-production version)


Pictures of ferrite bar and air core coils used for booster antenna tests

sloshatron <wa1gwh@...>
 

I uploaded pictures of my test coils. They were each used with the
same variable cap for comparison as booster antennas with my SRF-49.
My previous post describes the test and procedure.

I was planning to show them in position with my SRF-49, but I've taken
the radio off the pine board and disassembled it to study the wiring of
the stock rod.

I'm not very Yahoo literate. Some time ago I set up a Yahoo ID and
being disgruntled once again at yet another ID and password to keep
track of I just typed in my favorite word for our noisy dishwasher.
Hence, I am now "sloshatron", much to my current embarassment because
it is coming up everywhere in this discussion group! (Inspired by The
Jetsons, TV show.)

Garry


New file uploaded to ultralightdx

ultralightdx@...
 

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the ultralightdx
group.

File : /Sangean DT-210L AM Filter Mod.doc
Uploaded by : knallebo <knallebo@...>
Description : AM filter upgrade: Sangean DT-210 series (Roberts R9988) receiver

You can access this file at the URL:
http://groups.yahoo.com/group/ultralightdx/files/Sangean%20DT-210L%20AM%20Filter%20Mod.doc

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/web/index.htmlfiles

Regards,

knallebo <knallebo@...>


Air core coil info for Kevin and all.

sloshatron <wa1gwh@...>
 

Hi Folks;

To clarify my coil, the 1.2" is the axial length of the coil. It is
quite short in length and quite wide in diameter (4.1"). It looks a
bit like a loop antenna. I'm not sure if it is "within spec" on the
L/D ratio to be a true loop. I forget that criteria. The longer a
coil gets in relation to its width, the less signal pickup or
radiation it will have.

It is not a typical basket wound coil. One of the Xtal Set Society
guys developed this method of winding where a length of thin wall PVC
has deep slots cut into it lengthwise on one end so that it resembles
the top of a castle peice in chess. The coils created with this form
ended up with the name "rook" coil. I decided to call mine a
basketweave to avoid confusion, but have not succeeded! So now you
know the whole story (apologies to Paul Harvey)!

The 4.1" dimension is the width of the coil measured across it from a
point half way between the inner and outer layers of wire. This
layer distance is only about .2".

Unlike some true basket coils, the turns do not come way in toward
the axis before bending back out. They are quite shallow between
layers. Mine is wound one under, one over -- nothing fancy.

After winding, hot glue is applied across the wire cross-over points
and the form slipped off.

Hope this makes things more clear.

Garry
near Syracuse, NY


Re: Further comparison of air core vs ferrite bar booster antennas.

satya@...
 

Hi Garry:

Thanks for the detailed blow-by-blow. I too have found that eventually an
air core loop out-pulls a ferrite. I look forward to your pictures!

Quick question: when you say 1.2 inches long on the basket coil, is that
the difference between the inner and outer diameter of the basket? I
assume the "4.1" D" is the outside diameter?

Thanks - Kevin S
Bainbridge Island, WA

Specs:

Basket wound coil of #21 solid with insulating film:
4.1"D by 1.2"L, 41 turns total about 44.0 feet.

Ferrite bar coil of #24 plastic insulated telephone wire close wound
over poly sheet (1-2 mm):
bar: 123mm L x 31mm W x 11mm thick
coil: 35mm long, centered, about 10.9 feet of wire (a lot less than
the air coil, wire not much smaller but close wound with unknown
insulation touching)

I hope to soon have some photos of my setup.

Garry
near Syracuse, NY


Re: E100 Hotrodding Assistance Needed!

Guy Atkins
 

These are interesting findings on selectivity of the E100. I wonder if the E10 is similar? I have an E10 I picked up at Fry's Electronics for a measly $29.99, and I've been impressed with its performance and value.
 
The E10 has a unique "image avoider" feature. The narrower of the two I.F. filters is actually two filters-- one at 450 kHz I.F., and the other at 455 khz I.F. Depending on which one you choose, it can shift a signal by 10 khz if it is an image, allowing clear reception of the frequency. If it's not an image but a true signal, it stays put.
 
Guy Atkins
Puyallup, WA USA
 
 

-----Original Message-----
From: ultralightdx@... [mailto:ultralightdx@...] On Behalf Of dhsatyadhana
Sent: Saturday, April 12, 2008 10:29 AM
To: ultralightdx@...
Subject: [ultralightdx] Re: E100 Hotrodding Assistance Needed!

Hi John:

Sorry, no insights on disassembling the e100, but a few weeks ago I
ran the e100 and the SRF units through an exhaustive, musta been 15-
20 minutes long :-), test to see how they allowed reception of
channels up next to strong locals, and the e100 was the clear winner -
easily the most selective stock ULR out there! My guess is that
they designed it to allow shortwave reception with 5 khz separations,
rather than targetting 9 or 10 khz splits, which is an excellent side
benefit for us!

A couple considerations I see with the e100 are:
1. 910 khz images can be prominent in a strong RF urban area
2. mine is a different model than yours, with a monolithic coil that
covers the entire ferrtite and cannot be slid/tweaked for lower band
performance. Per Gary, my upper band exceeds even the Sony TJ-615
away in sensitivity, (HLAZ-1566 and VOA-1575 beware!), but alas the
lower part of the band (<1000 khz) gets progressively weaker, and the
SRFs easily out-hear the e100 on 540 khz. I believe yours and Gary's
have a movable coil which allows more balanced results.
3. Circuit noise/background white noise: noticeable at low volumes
4. AGC a bit squawky when tuning to strong locals

All in all, I'd say it's one of the better ULR packages, and the only
decent digital set with 1 khz tuning.

73 - Kevin S
Bainbrdige Island, WA

.