Date   

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 : /720KNR Greenland-81508.mp3
Uploaded by : vo1_001_swl <vo1_001_swl@...>
Description : KNR Greenland on 720 khz with the SRF-M37V

You can access this file at the URL:
http://groups.yahoo.com/group/ultralightdx/files/720KNR%20Greenland-81508.mp3

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,

vo1_001_swl <vo1_001_swl@...>


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 : /1521BSKSA -Saudi Arabia-081508.mp3
Uploaded by : vo1_001_swl <vo1_001_swl@...>
Description : BSKSA 1521 Saudi Arabia on the SRF-M37V

You can access this file at the URL:
http://groups.yahoo.com/group/ultralightdx/files/1521BSKSA%20%20-Saudi%20Arabia-081508.mp3

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,

vo1_001_swl <vo1_001_swl@...>


Loggings

Allen Willie
 

 
 
 Logged with the SRF-M37V barefoot as follows:
 
 
855 khz - RNE1 Murcia Spain    8/12/08     3:04 UTC w/ woman  in Spanish,mentions of Espana, olympic games report ; fair
 
900 khz - COPE Madrid Spain    8/9/08    23:33 UTC w/ spanish commentary by man and woman ,COPE ID; fair
 
963 khz - R. Rennaissance, Sexial, Portugal   8/12/08   3:44 UTC w/ portugeuse song by man, ID  fair
 
990 khz - SER, Bilboa Spain   8/9/08   23:43 UTC   w/ spanish commentary , ID  good
 
999 khz - RTM Tangier, Morocco    8/12/08    23:55 UTC     8/12/08 w/ arabic chants and commentary ; good  *** NEW ONE *** ultralight
 
1152 khz - RNE 5 Malaga ,Spain  8/9/08  23:40 UTC w/ spanish comedy type show ; fair
 
1660 khz - WFNA - Charlotte , North Carolina 8/13/ 08 1:44 UTC w/ numerous ads mentioning Charlotte, event promo, baseball game, ID "1600-AM WFNA" good  *** NEW ONE *** ultralight and overall
 
Allen Willie
St. John's, Newfoundland
SRF-M37V barefoot
 


All new Yahoo! Mail - Get a sneak peak at messages with a handy reading pane.


Warning: DT-400W AM Alignment NOT Like the DT-200VX

Gary DeBock
 

Hello Guys,
 
     When performing a routine AM alignment on the new Sangean DT-400W unit in preparation for the Summertime Shootout, it was discovered that the 1400 kHz trimmer and AM IF transformer have been relocated to an almost inaccessible position under the digital circuit board.
 
     Whereas previously these adjustments were barely possible on the DT-200VX either by desoldering the speaker wires (or rotating the front panel while pulling all available slack from the speaker wires), the only current option is to run about 14 jumpers from the RF board to the digital circuit board, thereby providing both digital and RF functions while the technician separates these boards to provide enough space to make the alignment adjustments.  This assumes that the technician will not induce alignment errors because of the RF jumpers acting like stray "antennas."  For all practical purposes, this makes high-band (and IF transformer) alignment of the DT-400W a technical boondoggle which should be avoided.
 
     The loopstick may still be easily peaked for low-band sensitivity, and this adjustment is recommended for a moderate (in my test unit) boost in low-band performance.  For a design which already had a reputation for suffering from limited AM sensitivity bandwidth (enabling the technician to either peak low band or high band), however, this new design of the DT-400W may well condemn it to mediocrity in high-band DX performance. 
 
73,  Gary DeBock




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SONY E10W

lrdheat
 

Hello
 
Is anybody familiar with the SONY E10W from about 1984? It is slightly smaller than the SRF-59, is speakerless, and is mono (and as result, came with a nice earpiece for one ear. It has an analog dial on the top of the set as opposed to the front; the top of the set is metal, the rest of the case is plastic. It has a push button to turn it on, another to turn it off. The set automatically turns off if the ear piece is taken out, and turns itself off as well after about an hour to save batteries.
 
It is slightly more sensitive and easily more selective than the SRF-59 when the bottom right of the set is held by a finger (thumb works well). When a finger is not placed in that location, the set is less sensitive on the upper frequencies (say, 1100 KHz and especially above). The nulling is exceptional, even (amazingly) clearly better than the 59.
 
The tuning is stiffer than the 59, and, with the control on the top edge, more difficult than the 59.
 
I wonder what kind of a chip SONY used in this set. I also wonder how SONY managed to make the 59 equally sensitive across the dial without the aid of a well placed finger!


Re: BIG OOPS!!! Over !00 Ultralight Awards Conferred!

bbwrwy
 

John:

I knew when I saw the an award for six provinces someone had been left
of the list. I was just about to send you an email. Maybe some day,
but to date I've only heard six Canadian stations with an ULR, half in
Saskatchewan.

Good DX everyone.

Richard Allen.


BIG OOPS!!! Over !00 Ultralight Awards Conferred!

John H. Bryant <bjohnorcas@...>
 

In a very kind way, Rob Ross let me know that I had run his awards together with Richard Allens and compounded the error by leaving Rob's name out entirely!!!

We both are smiling at the thought of Richard wandering around north central Oklahoma mumbling to himself, trying to figure out how he got all those awards that he didn't even apply for!

My apologies to all parties, including the mailing list for making you deal with multiple versions of this compilation. The version below, in blue, has been corrected.

John Bryant
Wandering Around Orcas Island, Confused as Usual!



Date: Mon, 11 Aug 2008 06:38:19 -0700
To: ultralightdx@...
From: "John H. Bryant"
Subject: Over !00 Ultralight Awards Conferred!

 As you may recall, the Ultralight Awards Committee and Gary DeBock previously announced four Founder's Awards to Paul Logan, Robert Ross, Dennis Vroom and Allen Willie for their unique contributions to the Ultralight DXing hobby. Following those special awards, on July 15th, the Awards Committee announced the general Awards Program for Ultralight MW DXing.

In the first several weeks have conferred an even 100 awards on some of the outstanding DXers in the hobby.  These remarkable achievements have been accomplished using entertainment grade shirt pocket portable radios. You will note that there are two radio classes listed: Barefoot, connoting DX achievements accomplished by a totally unmodified radio unassisted by any external antenna or other device. The Unlimited Class radios are Ultralight receivers that have been modified in some rather limited ways or have been attached to larger, more complex antennas and, possibly other peripheral devices. In either radio class, the accomplishments recognized below are outstanding, and many would be classed as "unbelievable" before the development of the Ultralight segment of the Medium Wave DXing hobby. There are separate groups of awards and separate serial number series for the two Ultralight radio classes.

Congratulations to all those Ultralighters listed below: 

DXer              Radio Class         Award                      Serial Number
Allen Willie    Barefoot  Canadian Prov. Heard: 4      0001
                                         Canadian Prov. Heard: 6      0001
                                         Continents Heard: 3             0001
                                         Continents Heard: 4             0001
                                         Continents Heard: 5             0001
                                         Countries Heard: 05             0001
                                         Countries Heard: 10             0001
                                         Countries Heard: 15             0001
                                         Countries Heard: 20             0001
                                         Countries Heard: 25             0001
                                         Countries Heard: 30             0001
                                         Countries Heard: 35             0001
                                         Countries Heard: 40             0001
                                         Countries Heard: 45             0001
                                         Countries Heard: 50             0001
                                         Master Dxer: Canadian Prov 0001
                                         Master DXer: International    0001
                                         Master Dxer: Trans-Atlantic 0001
                                         Ross Challenge: 07 Day       0003
                                         Stations Heard: 100              0002
                                         Stations Heard: 200              0002
                                         Trans-Atlantic DXer               0001                                        
                                         TA Stations Heard: 10           0001
                                         TA Stations Heard: 20           0001
                                         TA Stations Heard: 25           0001
                                         TA Stations Heard: 30           0001
                                         TA Stations Heard: 40           0001
                                         TA Stations Heard: 45           0001
                                         TA Stations Heard: 50           0001
                                         TA Stations Heard: 60           0001
                                         TA Stations Heard: 70           0001
                                         TA Stations Heard: 80           0001
                                         TA Stations Heard: 90           0001
                                         TA Stations Heard: 100         0001
                                         TA Stations Heard: 110         0001
                                         TA Stations Heard: 120         0001
                                         TA Stations Heard: 130         0001
                                         US States Heard: 10             0002
                                         US States Heard: 20             0002

Dennis Vroom   Unlimited  Countries Heard: 05        0002

Gary DeBock Barefoot  Trans-Pacific Dxer               0001
Gary DeBock Unlimited Trans-Pacific Dxer               0001

Gil Stacy Barefoot          Countries Heard: 05            0004
                                          Latin AM DXer 05                 0002
Gil Stacy Unlimited         Countries Heard: 10            0002
                                          Latin Stations Heard: 10      0001

Guy Atkins Unlimited     Continents Heard: 03           0002
                                          Countries Heard: 05            0003
                                          Trans-Pacific Dxer              0003
                                          TP Stations Heard: 10         0002

John Bryant Unlimited  Continents Heard: 03           0001
                                         Countries Heard: 05             0001
                                         Countries Heard: 10             0001
                                         Latin AM DXer (05)               0001
                                        Trans-Pacific Dxer                0004
                                        TP Stations Heard: 10           0001
                                        TP Stations Heard: 20           0001
                                        US States Heard: 10             0001

John Cereghin Unlimited Stations Heard: 100         0001
                                         US States Heard: 10            0001
                                         US States Heard: 20            0001

Lorne Harnum Barefoot Canadian Prov. Heard: 4    0003
                                         Continents Heard: 3             0002
                                         Continents Heard: 4             0002
                                         Countries Heard: 05             0003
                                         Countries Heard: 10             0002
                                         Countries Heard: 15             0002
                                         Countries Heard: 20             0002
                                         Trans-Atlantic Dxer              0002
                                         TA Stations Heard: 10          0002
                                         TA Stations Heard: 20          0002
                                         TA Stations Heard: 30          0002
                                         TA Stations Heard: 35          0002
                                         TA Stations Heard: 40          0002
                                         TA Stations Heard: 45          0002

Richard Allen Barefoot Latin AM DXer 05                  0003
                                         Latin Stations Heard 10        0002
                                         Latin Stations Heard 20        0002
                                         Stations Heard: 100              0003
                                         Stations Heard: 200              0003
  

 Rob Ross Barefoot      Canadian Prov. Heard: 4      0002
                                         Canadian Prov. Heard: 6      0002
                                         Countries Heard: 05             0002
                                         Latin AM DXer (05)               0001
                                         Latin Stations Heard 10        0001
                                         Latin Stations Heard 20        0001
                                         Latin Stations Heard 25        0001
                                         Latin Stations Heard 30        0001
                                         Master Dxer: Canadian Prov. 0002
                                         Ross Challenge: 07 Day      0001
                                         Ross Challenge: 30 Day      0001
                                         Stations Heard: 100              0001
                                         Stations Heard: 200              0001
                                         Stations Heard: 300              0001
                                         Stations Heard: 400              0001
                                         US States Heard: 10             0001
                                         US States Heard: 20             0001
                                         US States Heard: 25             0001
                                         US States Heard: 30             0001

One of the reasons for the very large number of awards is that all DXers making award submittals were conferred awards as if the awards program was in effect from the beginning of the Ultralight movement. For instance, Rob Ross, whose station count is nearing 500, received awards for !00, 200, 300 and 400 Stations Heard. This retroactive policy will continue in effect for DXers who have not yet submitted their loggings. It should also be noted that several DXers in the list above have yet to make submittals for the majority of awards that are their due. 

Information on Ultralight DXing in general and the Awards Program in particular is available from the Ultralight Files area of dxer.ca. Awards submittals go to Rob Ross of the Committee at va3sw@...

Our hearty congratulations to all the Ultralighters listed above. Bravo and Well Done!

John H. Bryant
for the
Ultralight Awards Committee
Gary DeBock, Rob Ross, John Bryant


Over !00 Ultralight Awards Conferred!

John H. Bryant <bjohnorcas@...>
 

 As you may recall, the Ultralight Awards Committee and Gary DeBock previously announced four Founder's Awards to Paul Logan, Robert Ross, Dennis Vroom and Allen Willie for their unique contributions to the Ultralight DXing hobby. Following those special awards, on July 15th, the Awards Committee announced the general Awards Program for Ultralight MW DXing.

In the first several weeks have conferred an even 100 awards on some of the outstanding DXers in the hobby.  These remarkable achievements have been accomplished using entertainment grade shirt pocket portable radios. You will note that there are two radio classes listed: Barefoot, connoting DX achievements accomplished by a totally unmodified radio unassisted by any external antenna or other device. The Unlimited Class radios are Ultralight receivers that have been modified in some rather limited ways or have been attached to larger, more complex antennas and, possibly other peripheral devices. In either radio class, the accomplishments recognized below are outstanding, and many would be classed as "unbelievable" before the development of the Ultralight segment of the Medium Wave DXing hobby. There are separate groups of awards and separate serial number series for the two Ultralight radio classes.

Congratulations to all those Ultralighters listed below: 

DXer              Radio Class         Award                      Serial Number
Allen Willie    Barefoot  Canadian Prov. Heard: 4      0001
                                         Canadian Prov. Heard: 6      0001
                                         Continents Heard: 3             0001
                                         Continents Heard: 4             0001
                                         Continents Heard: 5             0001
                                         Countries Heard: 05             0001
                                         Countries Heard: 10             0001
                                         Countries Heard: 15             0001
                                         Countries Heard: 20             0001
                                         Countries Heard: 25             0001
                                         Countries Heard: 30             0001
                                         Countries Heard: 35             0001
                                         Countries Heard: 40             0001
                                         Countries Heard: 45             0001
                                         Countries Heard: 50             0001
                                         Master Dxer: Canadian Prov 0001
                                         Master DXer: International    0001
                                         Master Dxer: Trans-Atlantic 0001
                                         Ross Challenge: 07 Day       0003
                                         Stations Heard: 100              0002
                                         Stations Heard: 200              0002
                                         Trans-Atlantic DXer               0001                                        
                                         TA Stations Heard: 10           0001
                                         TA Stations Heard: 20           0001
                                         TA Stations Heard: 25           0001
                                         TA Stations Heard: 30           0001
                                         TA Stations Heard: 40           0001
                                         TA Stations Heard: 45           0001
                                         TA Stations Heard: 50           0001
                                         TA Stations Heard: 60           0001
                                         TA Stations Heard: 70           0001
                                         TA Stations Heard: 80           0001
                                         TA Stations Heard: 90           0001
                                         TA Stations Heard: 100         0001
                                         TA Stations Heard: 110         0001
                                         TA Stations Heard: 120         0001
                                         TA Stations Heard: 130         0001
                                         US States Heard: 10             0002
                                         US States Heard: 20             0002

Dennis Vroom   Unlimited  Countries Heard: 05        0002

Gary DeBock Barefoot  Trans-Pacific Dxer               0001
Gary DeBock Unlimited Trans-Pacific Dxer               0001

Gil Stacy Barefoot          Countries Heard: 05            0004
                                          Latin AM DXer 05                 0002
Gil Stacy Unlimited         Countries Heard: 10            0002
                                          Latin Stations Heard: 10      0001

Guy Atkins Unlimited     Continents Heard: 03           0002
                                          Countries Heard: 05            0003
                                          Trans-Pacific Dxer              0003
                                          TP Stations Heard: 10         0002

John Bryant Unlimited  Continents Heard: 03           0001
                                         Countries Heard: 05             0001
                                         Countries Heard: 10             0001
                                         Latin AM DXer (05)               0001
                                        Trans-Pacific Dxer                0004
                                        TP Stations Heard: 10           0001
                                        TP Stations Heard: 20           0001
                                        US States Heard: 10             0001

John Cereghin Unlimited Stations Heard: 100         0001
                                         US States Heard: 10            0001
                                         US States Heard: 20            0001

Lorne Harnum Barefoot Canadian Prov. Heard: 4    0003
                                         Continents Heard: 3             0002
                                         Continents Heard: 4             0002
                                         Countries Heard: 05             0003
                                         Countries Heard: 10             0002
                                         Countries Heard: 15             0002
                                         Countries Heard: 20             0002
                                         Trans-Atlantic Dxer              0002
                                         TA Stations Heard: 10          0002
                                         TA Stations Heard: 20          0002
                                         TA Stations Heard: 30          0002
                                         TA Stations Heard: 35          0002
                                         TA Stations Heard: 40          0002
                                         TA Stations Heard: 45          0002

Richard Allen Barefoot Latin AM DXer 05                  0003
                                         Latin Stations Heard 10        0002
                                         Latin Stations Heard 20        0002
                                         Stations Heard: 100              0003
                                         Stations Heard:200               0003
                                         Canadian Prov. Heard: 4      0002
                                         Canadian Prov. Heard: 6      0002
                                         Countries Heard: 05             0002
                                         Latin AM DXer (05)               0001
                                         Latin Stations Heard 10        0001
                                         Latin Stations Heard 20        0001
                                         Latin Stations Heard 25        0001
                                         Latin Stations Heard 30        0001
                                         Master Dxer: Canadian Prov. 0002
                                         Ross Challenge: 07 Day      0001
                                         Ross Challenge: 30 Day      0001
                                         Stations Heard: 100              0001
                                         Stations Heard: 200              0001
                                         Stations Heard: 300              0001
                                         Stations Heard: 400              0001
                                         US States Heard: 10             0001
                                         US States Heard: 20             0001
                                         US States Heard: 25             0001
                                         US States Heard: 30             0001

One of the reasons for the very large number of awards is that all DXers making award submittals were conferred awards as if the awards program was in effect from the beginning of the Ultralight movement. For instance, Rob Ross, whose station count is nearing 500, received awards for !00, 200, 300 and 400 Stations Heard. This retroactive policy will continue in effect for DXers who have not yet submitted their loggings. It should also be noted that several DXers in the list above have yet to make submittals for the majority of awards that are their due. 

Information on Ultralight DXing in general and the Awards Program in particular is available from the Ultralight Files area of dxer.ca. Awards submittals go to Rob Ross of the Committee at va3sw@...

Our hearty congratulations to all the Ultralighters listed above. Bravo and Well Done!

John H. Bryant
for the
Ultralight Awards Committee
Gary DeBock, Rob Ross, John Bryant


Get air tickets almost for nothing

senni.cindrella <senni.cindrella@...>
 

As the business war on the air is hotting up with so many low-budget
airlines dominating the sky, the passengers can now enjoy the best
deals. The webguide - http://air.myguideforlife.com - helps you find
the cheapest and even free air tickets to make your journey ore
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Visit the website now to find out how to get the cheap and free air
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Sony ICF-4900/4920, ICF-SW20 and ICF-SW22

Stephan Grossklass
 

Hi all,

has anyone tried these little analog-tuned Sony sets? They
should all be CX20091 based (later versions of the IC:
CXA1191, CXA1691). The '4900 is the largest of the bunch, at
a "whopping" 130 x 76 x 25 mm, with the others being no
larger than 110 x 71 x 24 mm.
A guy on another group swears by his SW20 as it is one of
few sets that will not give trouble with birdies on a station
at exactly 910 kHz, and I have read fairly positive comments
on the MW performance of this model elsewhere. (My only
CX20091 based set, the larger ICF-7601, is a pretty good
performer but wouldn't mind a somewhat larger AGC range and
is a touch hissy.)

Stephan


Re: Sony SRF-S84-- Tiniest of the CXA1129N Analog Family

Stephan Grossklass
 

Sadly, CXA1129 based radios are near unobtainium over here.
One can get a SRF-S84N (is that the same as the "regular"
one?) for close to 50 EUR, but that's about it.

Re: spam, I haven't had much trouble with unmoderated
groups either. One only has to make sure that there is
some moderation redundancy, which (a) ensures that spam
can be deleted quickly if it does crop up and (b) should
keep a group from ending up without any active moderator
at all, since an abandoned group flooded with spam is
about the most frustrating thing ever (and Yahoo! can do
little more than delete it, which generally is not what
one wants).

Stephan


Re: Sony SRF M37V image problem solved - Update

Stephan Grossklass
 

--- In ultralightdx@..., satya@... wrote:

False alarm! I forgot that the M37V uses a 450 khz filter, and so
the images are only 900 khz away.
BTW, you know what the reason for 450 kHz is? With a 3 or 9 kHz
PLL reference frequency (and thus granularity), you'd never hit
the 9 kHz frequency grid precisely when using 455 kHz. (Same
goes for a 10 kHz reference in 10 kHz territory.)

Stephan


Re: Sony SRF-S84-- Tiniest of the CXA1129N Analog Family

Gary DeBock
 

Hello Stephan,
 
     I was able to "export" a 530-1710 kHz SRF-59 and SRF-39FP (while it was still available) to Paul in Northern Ireland, and would be willing to help other European Ultralight enthusiasts if necessary.  I don't know if your SRF-S84N model is comparable to my SRF-S84 unit from Hong Kong, but it will be fully reviewed in the Summertime Shootout, as well as the SRF-M97V, DT-400W, E100, and SRF-M37W units.
 
                                                                                73,  Gary DeBock  (N7EKX)   




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Sony SRF-S84-- Tiniest of the CXA1129N Analog Family

Gary DeBock
 

Hello Guys,
 
     If you like the SRF-59 and SRF-39FP analog Ultralights because of their size/performance ratio, you will certainly love the smaller (and less common) SRF-S84.
 
     At 3" x 1.4" and weighing all of 1.7 ounces, the smallest current member of the CXA1129N-based Sony models packs a lot of performance in an extremely small package.  With a 1.19" x .25" midget loopstick and extensive FM stereo features, one might easily get the impression that this model is useless for AM-DXing.  But like almost all of its SRF-59 siblings, it is typically not aligned to full sensitivity at the factory, and gains significant DX performance when its loopstick coil and high-band trimmer are peaked by a caring technician.
 
     After alignment of my Summertime Shootout model, it can provide some surprising daytime DX receptions, although its tiny analog tuning dial is not going to impress very many hobbyists.
 
     This silver-colored overachiever can be purchased on eBay for around $31.45 plus $5 shipping from various Hong Kong exporters (hkequipment and ecbuy_shop), which is certainly smarter than going through Amazon.com ($99.00 plus shipping via Wall Street Photo).  Like all CXA1129N analog units, free AM alignment will be provided here if you can ship it prepaid to P.O. Box 1313, Puyallup, WA 98371, with $5 return postage. 
 
                        73,  Gary DeBock 




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Re: Sony SRF-M37V/W alignment

bbwrwy
 

Thanks Gary:

I'd figured out everything but the CT2 adjustment. I give it a try on
another day.

Richard.


Re: Sony SRF-M37V/W alignment

bbwrwy
 

Thanks everyone.

I managed to freed up the moving coil for the 600 kHz adjustment. Now
I need to figure out which control is used for the 1400 kHz
adjustment. My guess it's either the one marked "L4 MW OSC" or "CT2
MW RF". Because of thunderstorms I'll have to wait until another day.

I have to admit the E100 is easier to work on than the M37V/W. But as
some DXers have shown the little receiver has potential.

Richard Allen.


Re: Sony SRF-M37V/W alignment

Guy Atkins
 

Hi Gary,
 
Unfortunately I have no useful information to share on the SRF-M37V alignment. This model was the very first one ultralight I tried to align, and in so doing I reduced the sensitivity somehow to a point where it only receives the strongest locals. In fact, I think I may have blown an input transistor or similar. I was careful to return all trimmers, inductors, etc. to their original settings but the sensitivity I ended up with is nowhere near the stock sensitivity.
 
I have had wonderful results with "quick and dirty" alignments on other models such as the Sangeans and Etons, but the M37V was a dismal failure. I have moved on to using other models, particularly the E100, and I don't plan to work further with the M37V.
 
73,
 
Guy Atkins
Puyallup, WA
 
 

-----Original Message-----
From: ultralightdx@... [mailto:ultralightdx@...]On Behalf Of D1028Gary@...
Sent: Friday, August 08, 2008 12:18 PM
To: ultralightdx@...
Subject: Re: [ultralightdx] Sony SRF-M37V/W alignment

Hello Richard and Kevin,
 
     Because of a timing quirk, the SRF-M37V is one of the very few Ultralights that I haven't yet aligned.  It was part of the "Round One" Shootout posted on dxer.ca in late December, before I routinely started to align Ultralight radios prior to shootout competitions.  I know that local Puyallup, WA resident (and filter guru) Guy Atkins has done an alignment on an SRF-M37V, using instructions that I provided for a "quick and dirty" alignment on any AM portable without a service manual.  Perhaps he will read this, and share his experience. 
 
 
   
.


Re: Sony SRF-M37V/W alignment

Gary DeBock
 

Hello Richard,
 
     I just finished the MW alignment of my new SRF-M37W, in preparation for the Summertime Shootout.  It is not an alignment for the faint-hearted, to say the least.
 
     You were very close to finishing the alignment yourself--  the last step was to adjust the "CT2 MW RF" control to peak a high-band (1360-1450 kHz) weak signal.  This is the trimming capacitor closest to the upper right corner of the radio, and also the one at the tip of my index finger in a photo I will upload to the group photo site.
 
     The alignment itself requires a jumper wire between the disconnected red wire and the front circuit board ground, and also requires the hobbyist to hold the battery in place (to contact both the positive and negative leads).  In addition, the front panel should be placed over the front circuit board to allow use of the On-Off switch and Tuning controls, which creates quite a collection of jumpers, fingers, and circuit boards.
 
     The loopstick only has one coil secured with wax, however--  the other is secured with glue, and is not part of the 600 kHz alignment.  After this tricky procedure, no performance improvement was gained.  The new SRF-M37W was aligned to maximum sensitivity at the factory, with final sensitivity moderate in comparison to the SRF-T615.  Selectivity is still barn-door wide (local KSUH-1450 is heard from 1400-1610).
 
                                                                                 73,  Gary DeBock   
 

In a message dated 8/9/2008 7:00:42 P.M. Pacific Daylight Time, richarda@... writes:

Thanks everyone.

I managed to freed up the moving coil for the 600 kHz adjustment. Now
I need to figure out which control is used for the 1400 kHz
adjustment. My guess it's either the one marked "L4 MW OSC" or "CT2
MW RF". Because of thunderstorms I'll have to wait until another day.

I have to admit the E100 is easier to work on than the M37V/W. But as
some DXers have shown the little receiver has potential.

Richard Allen.

.


Re: Sony SRF-M37V/W alignment

Gary DeBock
 

Hi Guy, Richard and Kevin,
 
     The new SRF-M37W here needs to be aligned anyway before the Summertime Shootout, so I'll just put it at the top of the list, and write notes about which coils and trimmers to adjust.  For those needing alignment instructions for either the SRF-M37V or 37W models, this should do the trick.
 
     By the way, most of our current Ultralight model alignment instructions were made possible only by tinkerers performing "quick and dirty" operations without a service manual.  Guy was the first to perform the DT-200VX and SRF-T615 alignments, and deserves a lot of thanks for his efforts.  The E100 procedure was also developed this way here, among others.  The "quick and dirty" alignment procedure will also be performed on the SRF-M97V, SRF-S84, and DT-400W, before the Summertime Shootout.  We can then be sure how much sensitivity these units are capable of, as well as know how good the factory alignment is.
 
                                     73,  Gary
 
                                                                         
 
    




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Re: Sony SRF-M37V/W alignment

bbwrwy
 

I've posted several photos of a disassembled SRF-M37V.

To get to the RF circuit board you need to unsolder the red wire in
the lower left hand corner must be unsoldered. When reassembling the
receiver resolder and fit it into the notch below the solder point.

Richard Allen.