Date   

reception report question

Mark Meece <antennapig@...>
 

It has been too many years since I have written an
AM Broadcast band reception report.

Who is it best to address the report to; the General Manager,
Program Director, Chief Engineer or just the station in general?


Thanks,
Mark
Miamisburg, Ohio


Re: Radiolab filter mod for M37V ULR

Steve Ratzlaff <steveratz@...>
 

Hi Mike,
Just for clarification, the LTS450GW filter that Radiolab uses is a specified 9kHz bandwidth filter, not 4.5 kHz--one has to read the spec closely--it says "+/-4.5 kHz". That's a pretty wide filter. It's a 6 element filter so apparently that better selectivity is what makes the difference in your M37 ULR. As with the LTM450xx series of YIC brand that the UK eBay Mainline seller carries, the H version is listed as a 6 kHz filter. I've measured it at 7.85 kHz so it's wider than the spec. I would guess it doesn't matter much who actually makes the filter--Eurocquartz (who probably really gets it from Asia), or the YIC brand.
Since I can get the H version from Mainline, there's not much point in me trying the Euroquartz G (wider) version. Too bad we can't get the I version which is the narrowest one listed.
But thanks for the Radiolab info!
73,
Steve

----- Original Message -----
From: "m_a_schuster" <schuster@...>
To: <ultralightdx@...>
Sent: Sunday, April 12, 2009 3:48 PM
Subject: [ultralightdx] Re: DT-400W filter mod results comments


Steve,

Yep, I don't know of any suppliers that will sell single quantities of these Euroquartz filters. In separate threads on the Sony SRF-M37 some had purchased the 4.5 KHz version directly from Radiolabs as they use this series to upgrade the large ATS-909 portable. (In my case I asked Todd D. if they would install it for me, and he said sure) The skirts look pretty good for a tiny ceramic; at least, if the graphs on the spec sheet are to be believed.

On further reflection I wonder whether this series would actually fit in the DT-400 cabinet, though.

regards -- mike


--- In ultralightdx@..., "Steve Ratzlaff" <steveratz@...> wrote:

Hi Mike,
No, I wasn't familiar with that brand or type of filter, nor where to obtain
it, so I have no firsthand info on how it performs. Only the YIC brand of
filters that the UK eBay seller Mainline carries is all I've tried.
73,
Steve

----- Original Message -----
From: "m_a_schuster" <schuster@...>
To: <ultralightdx@...>
Sent: Sunday, April 12, 2009 3:00 PM
Subject: [ultralightdx] Re: DT-400W filter mod results comments


Steve,

Did you ever get the opportunity to test the Euroquartz LTS450GW4.5 KHz
filter which Radiolabs is selling? They just installed one in my SRF-M37 and
the selectivity improvement here in RF Hell is quite impressive. Wondering
if this might be a more effective mod for the Sangean DT-400.


--mike


http://www.euroquartz.co.uk/pdf/ceramic-lts-450w.pdf



------------------------------------

Yahoo! Groups Links



New PVC-Frame Passive Loop Photos

Gary DeBock
 

Hello All,
 
The annual "March Madness" antenna project here was to build a series of PVC-framed tuned passive loops, with the design objective of making the coils completely symmetrical, and isolating the loop from the frame structure as  much as possible (to provide the best sensitivity, and nulling ability).
 
Seven PVC-framed tuned passive loops were constructed, with side dimensions of 18", 2', 3', 4', 5', 6' and 7.5'. The use of lightweight, rugged, waterproof and extremely cheap PVC material made this project extremely enjoyable, and each PVC loop seems to have optimum sensitivity for its size.
 
Four photos have been uploaded to the Ultralightdx Yahoo site, showing the 18", 2' and 7.5' (side) models. The largest model requires some serious real estate for completion, and definitely should not be considered if you have a shaky relationship with any of your neighbors.
 
The use of PVC material makes construction of monster loops a breeze, however, and I hope to write an article with detailed construction information soon. These PVC loops can turn any ultralight radio into a DXing sensation.
 
73, Gary DeBock 
 
   


Why pay full price? Check out this month's deals on the new AOL Shopping.


Congratulations to Kirk Allen

John H. Bryant <bjohnorcas@...>
 

Congratulations to Kirk Allen for having crossed the 500 Stations Heard: Unlimited Class and receiving his certificate on March 23. Both he and we forgot that crossing the 500 station barrier (Kirk was the fifth) also qualifies for the Master Ultralight DXer: 500 Stations. Kirk received this prestigious award today.

John Bryant
for the Awards Committee

An extensive group of awards certificates is available from the Ultralight MW DXing Awards Committee. Each recipient receives a digital file which may be used for electronic display or is suitable for framing when printed at 8 12" x 11" on good quality paper. Information on the Awards Program and the simple application procedures are found in the Downloads>Ultralight Files area of dxer.ca
 


Congratulations to Chris Knight on TWO New Ultralight Awards!

John H. Bryant <bjohnorcas@...>
 

Chris Knight of Ft. Lupton, CO, just received the 100 Stations Heard: Barefoot and the 10 Latin Stations Heard: Barefoot awards. Since most of Chris' catches had to be made outside, due to local interference, Chris had to work particularly hard.  I understand that Chris is now shifting over to the Unlimited category, so his totals may grow a bit more quickly.  We look forward to filling out many more awards for Chris!

John Bryant
for the Awards Committee

An extensive group of awards certificates is available from the Ultralight MW DXing Awards Committee. Each recipient receives a digital file which may be used for electronic display or is suitable for framing when printed at 8 12" x 11" on good quality paper. Information on the Awards Program and the simple application procedures are found in the Ultralight Files area of dxer.ca
 
 


Re: DT-400W filter mod results comments

m_a_schuster
 

Steve,

Yep, I don't know of any suppliers that will sell single quantities of these Euroquartz filters. In separate threads on the Sony SRF-M37 some had purchased the 4.5 KHz version directly from Radiolabs as they use this series to upgrade the large ATS-909 portable. (In my case I asked Todd D. if they would install it for me, and he said sure) The skirts look pretty good for a tiny ceramic; at least, if the graphs on the spec sheet are to be believed.

On further reflection I wonder whether this series would actually fit in the DT-400 cabinet, though.

regards -- mike

--- In ultralightdx@..., "Steve Ratzlaff" <steveratz@...> wrote:

Hi Mike,
No, I wasn't familiar with that brand or type of filter, nor where to obtain
it, so I have no firsthand info on how it performs. Only the YIC brand of
filters that the UK eBay seller Mainline carries is all I've tried.
73,
Steve

----- Original Message -----
From: "m_a_schuster" <schuster@...>
To: <ultralightdx@...>
Sent: Sunday, April 12, 2009 3:00 PM
Subject: [ultralightdx] Re: DT-400W filter mod results comments


Steve,

Did you ever get the opportunity to test the Euroquartz LTS450GW4.5 KHz
filter which Radiolabs is selling? They just installed one in my SRF-M37 and
the selectivity improvement here in RF Hell is quite impressive. Wondering
if this might be a more effective mod for the Sangean DT-400.


--mike


http://www.euroquartz.co.uk/pdf/ceramic-lts-450w.pdf


Re: SRF-M37V and SRF-M37W-Performance differences?

m_a_schuster
 

I only knew that Radiolabs used this filter for the ATS-909 upgrades, and that some had purchased the filters direct from them. On a hunch I emailed Todd D. and he said they'd certainly do the job for $39.95 plus shipping.

For the record in live in northern NJ near the wetlands where a number of MW stations have their transmitter sites. I've been through quite a few radios over the years, and in some the entire upper half of the band is wiped out from locals at 1010 and 1130.


regards -- mike

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

Hi Mike

Glad that you go the M37V fixed up - I wasn't aware that Radiolabs did
filter upgrades for individual units! Not sure where you're at, but here
in the Seattle area, it makes all the difference on the M37V.

The published Sangean DT-400W mod uses the next-narrower filter, the 3.0
khz HW version, so it is a little tighter yet, and I am contemplating
putting an HW on my other M37V. Would you mind telling me/us what
Radiolabs charges for an individual job like this?

Kevin S
Bainbridge Island, WA



Kevin (and all)

Just received my upgraded M37V from Radiolabs. I must say, while it may
not be up to fishing out splits from across the ocean, the nominal 4.5 KHz
Euroquartz LTS450GW makes the difference between "unuseable" and "very
nice" in my high RF environment near several MW transmitters. This was a
radio I really wanted to like but ended up being thrown in the bin because
of its "barn door" selectivity. It's the same basic size as the SRF-59 but
more sensitive, and now comparably selective.


http://www.euroquartz.co.uk/pdf/ceramic-lts-450w.pdf


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

Hi Alex/All:

I have both a stock and a re-filtered M37V. The selectivity on the
re-filtered (with the LT450GW) is VERY good, noticeably better than the
not-too-shabby SRF-59 and almost that of the stock Eton e100. The stock
M37V is an absolute barn door, so it turns a Turkey into something of an
eagle. As Gary mentioned previously, it is now an Unlimited class
Ultralight, but it really becomes a great little radio.

As Steve Ratzlaff mentioned earlier, these little filters cannot be
expected to perform like the Murata narrow filter, but it is still a
huge
improvement and an excellent domestic DXing filter choice. It even
dabbles in split frequencies: at the beach this past Tuesday morning,
the
M37V was able to get good barefoot readability on 774-JOUB from Japan
when
signals were sufficient, keeping strong stations on 770 and 780 at bay.

To change from 9 to 10 khz, first turn the unit off. Power and Clock
are
the buttons across the top. First push and hold Clock, THEN press and
hold Power, and hold both for about 5 seconds. Eventually a 9 or 10
will
flash on the screen, indicating to which tuning increment you have just
switched. Those 5 seconds seem an eternity...

Hope this helps - Kevin S
Bainbridge Island, WA


Hi Alex,

Actually even replacing the horrendous IF filter in the SRF-M37V with
one
of
the modest 450 kHz upgrades would place the radio in the "unlimited"
class.
Because of this, fanatical tinkerers do everything possible to boost
performance-- premium filters, Slider loopsticks, and/or large
directional
external
antennas. But the unique thrill of receiving rare DX on a stock
Ultralight is
still a big attraction, even for me. The Sangean DT-400W, Sony
SRF-T615,
Eton
E100 and C.Crane SWP stock Ultralights are very thrilling to take
along
on
DXpeditions, and can receive many TP's when conditions are right.

The SRF-M37V does have a procedure for switching between 9 kHz and 10
kHz
AM
band tuning steps, and I'm sure that someone on the list can tell you
about
it (sorry, but my own manual seems to have disappeared, also). In the
early
days of the Ultralight boom (December 2007), the radio was one of the
most
popular digital Ultralights, despite the barn-door selectivity.

73, Gary




In a message dated 4/2/2009 12:38:21 P.M. Pacific Daylight Time,
rifleman336@ writes:




--- In _ultralightdx@ultralightdxult_
(mailto:ultralightdx@...) ,
D1028Gary@, D1

Hi Alex,

Whether the 450 kHz filter modification would be useless or not
probably
depends on the type of DX you pursue.

For domestic DXers looking for a little more sensitivity, the
modification
may help out somewhat. But for 9 kHz-split DXers chasing
transoceanic
DX
next
to strong domestic stations, these modest 450 kHz filters are not
going
to
provide any significant help. Both Steve and I enjoy this type of
transoceanic
DXing, which is probably why we are more demanding than domestic
DXers
in
evaluating filter performance.

We also have probably been spoiled by the phenomenal performance of
the
455
kHz Murata "K" filter upgrades in the Slider E100's, which routinely
allow
reception of weak TP's only 2 kHz away from strong domestics. Other
filters seem
very lame, in comparison.

73, Gary DeBock
Almost sounds like grounds for using a off board DSP filter, and a
loop
antenna for more directivity. Ofcourse that throughs it in to the
ultralight
unlimited class. Bummer!!! :>(

BTW, How do you listen to 9KHZ stations when the M37's are 10 KHz
increments. I've lost the manual is their a hidden switch or a
"keyboard
trick"?

ALEX N8UCN/KOH8IG






**************Worried about job security? Check out the 5 safest jobs
in a
recession.
(http://jobs.aol.com/gallery/growing-job-industries?ncid=emlcntuscare00000003)


Re: DT-400W filter mod results comments

Steve Ratzlaff <steveratz@...>
 

Hi Mike,
No, I wasn't familiar with that brand or type of filter, nor where to obtain it, so I have no firsthand info on how it performs. Only the YIC brand of filters that the UK eBay seller Mainline carries is all I've tried.
73,
Steve

----- Original Message -----
From: "m_a_schuster" <schuster@...>
To: <ultralightdx@...>
Sent: Sunday, April 12, 2009 3:00 PM
Subject: [ultralightdx] Re: DT-400W filter mod results comments


Steve,

Did you ever get the opportunity to test the Euroquartz LTS450GW4.5 KHz filter which Radiolabs is selling? They just installed one in my SRF-M37 and the selectivity improvement here in RF Hell is quite impressive. Wondering if this might be a more effective mod for the Sangean DT-400.


--mike


http://www.euroquartz.co.uk/pdf/ceramic-lts-450w.pdf


Re: SRF-M37V and SRF-M37W-Performance differences?

satya@...
 

Hi Mike

Glad that you go the M37V fixed up - I wasn't aware that Radiolabs did
filter upgrades for individual units! Not sure where you're at, but here
in the Seattle area, it makes all the difference on the M37V.

The published Sangean DT-400W mod uses the next-narrower filter, the 3.0
khz HW version, so it is a little tighter yet, and I am contemplating
putting an HW on my other M37V. Would you mind telling me/us what
Radiolabs charges for an individual job like this?

Kevin S
Bainbridge Island, WA

Kevin (and all)

Just received my upgraded M37V from Radiolabs. I must say, while it may
not be up to fishing out splits from across the ocean, the nominal 4.5 KHz
Euroquartz LTS450GW makes the difference between "unuseable" and "very
nice" in my high RF environment near several MW transmitters. This was a
radio I really wanted to like but ended up being thrown in the bin because
of its "barn door" selectivity. It's the same basic size as the SRF-59 but
more sensitive, and now comparably selective.


http://www.euroquartz.co.uk/pdf/ceramic-lts-450w.pdf


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

Hi Alex/All:

I have both a stock and a re-filtered M37V. The selectivity on the
re-filtered (with the LT450GW) is VERY good, noticeably better than the
not-too-shabby SRF-59 and almost that of the stock Eton e100. The stock
M37V is an absolute barn door, so it turns a Turkey into something of an
eagle. As Gary mentioned previously, it is now an Unlimited class
Ultralight, but it really becomes a great little radio.

As Steve Ratzlaff mentioned earlier, these little filters cannot be
expected to perform like the Murata narrow filter, but it is still a
huge
improvement and an excellent domestic DXing filter choice. It even
dabbles in split frequencies: at the beach this past Tuesday morning,
the
M37V was able to get good barefoot readability on 774-JOUB from Japan
when
signals were sufficient, keeping strong stations on 770 and 780 at bay.

To change from 9 to 10 khz, first turn the unit off. Power and Clock
are
the buttons across the top. First push and hold Clock, THEN press and
hold Power, and hold both for about 5 seconds. Eventually a 9 or 10
will
flash on the screen, indicating to which tuning increment you have just
switched. Those 5 seconds seem an eternity...

Hope this helps - Kevin S
Bainbridge Island, WA


Hi Alex,

Actually even replacing the horrendous IF filter in the SRF-M37V with
one
of
the modest 450 kHz upgrades would place the radio in the "unlimited"
class.
Because of this, fanatical tinkerers do everything possible to boost
performance-- premium filters, Slider loopsticks, and/or large
directional
external
antennas. But the unique thrill of receiving rare DX on a stock
Ultralight is
still a big attraction, even for me. The Sangean DT-400W, Sony
SRF-T615,
Eton
E100 and C.Crane SWP stock Ultralights are very thrilling to take
along
on
DXpeditions, and can receive many TP's when conditions are right.

The SRF-M37V does have a procedure for switching between 9 kHz and 10
kHz
AM
band tuning steps, and I'm sure that someone on the list can tell you
about
it (sorry, but my own manual seems to have disappeared, also). In the
early
days of the Ultralight boom (December 2007), the radio was one of the
most
popular digital Ultralights, despite the barn-door selectivity.

73, Gary




In a message dated 4/2/2009 12:38:21 P.M. Pacific Daylight Time,
rifleman336@... writes:




--- In _ultralightdx@ultralightdxult_
(mailto:ultralightdx@...) ,
D1028Gary@, D1

Hi Alex,

Whether the 450 kHz filter modification would be useless or not
probably
depends on the type of DX you pursue.

For domestic DXers looking for a little more sensitivity, the
modification
may help out somewhat. But for 9 kHz-split DXers chasing
transoceanic
DX
next
to strong domestic stations, these modest 450 kHz filters are not
going
to
provide any significant help. Both Steve and I enjoy this type of
transoceanic
DXing, which is probably why we are more demanding than domestic
DXers
in
evaluating filter performance.

We also have probably been spoiled by the phenomenal performance of
the
455
kHz Murata "K" filter upgrades in the Slider E100's, which routinely
allow
reception of weak TP's only 2 kHz away from strong domestics. Other
filters seem
very lame, in comparison.

73, Gary DeBock
Almost sounds like grounds for using a off board DSP filter, and a
loop
antenna for more directivity. Ofcourse that throughs it in to the
ultralight
unlimited class. Bummer!!! :>(

BTW, How do you listen to 9KHZ stations when the M37's are 10 KHz
increments. I've lost the manual is their a hidden switch or a
"keyboard
trick"?

ALEX N8UCN/KOH8IG






**************Worried about job security? Check out the 5 safest jobs
in a
recession.
(http://jobs.aol.com/gallery/growing-job-industries?ncid=emlcntuscare00000003)


Re: SRF-M37V and SRF-M37W-Performance differences?

m_a_schuster
 

Kevin (and all)

Just received my upgraded M37V from Radiolabs. I must say, while it may not be up to fishing out splits from across the ocean, the nominal 4.5 KHz Euroquartz LTS450GW makes the difference between "unuseable" and "very nice" in my high RF environment near several MW transmitters. This was a radio I really wanted to like but ended up being thrown in the bin because of its "barn door" selectivity. It's the same basic size as the SRF-59 but more sensitive, and now comparably selective.


http://www.euroquartz.co.uk/pdf/ceramic-lts-450w.pdf

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

Hi Alex/All:

I have both a stock and a re-filtered M37V. The selectivity on the
re-filtered (with the LT450GW) is VERY good, noticeably better than the
not-too-shabby SRF-59 and almost that of the stock Eton e100. The stock
M37V is an absolute barn door, so it turns a Turkey into something of an
eagle. As Gary mentioned previously, it is now an Unlimited class
Ultralight, but it really becomes a great little radio.

As Steve Ratzlaff mentioned earlier, these little filters cannot be
expected to perform like the Murata narrow filter, but it is still a huge
improvement and an excellent domestic DXing filter choice. It even
dabbles in split frequencies: at the beach this past Tuesday morning, the
M37V was able to get good barefoot readability on 774-JOUB from Japan when
signals were sufficient, keeping strong stations on 770 and 780 at bay.

To change from 9 to 10 khz, first turn the unit off. Power and Clock are
the buttons across the top. First push and hold Clock, THEN press and
hold Power, and hold both for about 5 seconds. Eventually a 9 or 10 will
flash on the screen, indicating to which tuning increment you have just
switched. Those 5 seconds seem an eternity...

Hope this helps - Kevin S
Bainbridge Island, WA


Hi Alex,

Actually even replacing the horrendous IF filter in the SRF-M37V with one
of
the modest 450 kHz upgrades would place the radio in the "unlimited"
class.
Because of this, fanatical tinkerers do everything possible to boost
performance-- premium filters, Slider loopsticks, and/or large directional
external
antennas. But the unique thrill of receiving rare DX on a stock
Ultralight is
still a big attraction, even for me. The Sangean DT-400W, Sony SRF-T615,
Eton
E100 and C.Crane SWP stock Ultralights are very thrilling to take along
on
DXpeditions, and can receive many TP's when conditions are right.

The SRF-M37V does have a procedure for switching between 9 kHz and 10 kHz
AM
band tuning steps, and I'm sure that someone on the list can tell you
about
it (sorry, but my own manual seems to have disappeared, also). In the
early
days of the Ultralight boom (December 2007), the radio was one of the
most
popular digital Ultralights, despite the barn-door selectivity.

73, Gary




In a message dated 4/2/2009 12:38:21 P.M. Pacific Daylight Time,
rifleman336@... writes:




--- In _ultralightdx@ultralightdxult_
(mailto:ultralightdx@...) ,
D1028Gary@, D1

Hi Alex,

Whether the 450 kHz filter modification would be useless or not
probably
depends on the type of DX you pursue.

For domestic DXers looking for a little more sensitivity, the
modification
may help out somewhat. But for 9 kHz-split DXers chasing transoceanic
DX
next
to strong domestic stations, these modest 450 kHz filters are not going
to
provide any significant help. Both Steve and I enjoy this type of
transoceanic
DXing, which is probably why we are more demanding than domestic DXers
in
evaluating filter performance.

We also have probably been spoiled by the phenomenal performance of the
455
kHz Murata "K" filter upgrades in the Slider E100's, which routinely
allow
reception of weak TP's only 2 kHz away from strong domestics. Other
filters seem
very lame, in comparison.

73, Gary DeBock
Almost sounds like grounds for using a off board DSP filter, and a loop
antenna for more directivity. Ofcourse that throughs it in to the
ultralight
unlimited class. Bummer!!! :>(

BTW, How do you listen to 9KHZ stations when the M37's are 10 KHz
increments. I've lost the manual is their a hidden switch or a "keyboard
trick"?

ALEX N8UCN/KOH8IG






**************Worried about job security? Check out the 5 safest jobs in a
recession.
(http://jobs.aol.com/gallery/growing-job-industries?ncid=emlcntuscare00000003)


Re: DT-400W filter mod results comments

m_a_schuster
 

Steve,

Did you ever get the opportunity to test the Euroquartz LTS450GW4.5 KHz filter which Radiolabs is selling? They just installed one in my SRF-M37 and the selectivity improvement here in RF Hell is quite impressive. Wondering if this might be a more effective mod for the Sangean DT-400.


--mike


http://www.euroquartz.co.uk/pdf/ceramic-lts-450w.pdf

--- In ultralightdx@..., "Steve Ratzlaff" <steveratz@...> wrote:

Hi Michael,
Thanks for your comments. Yes, I used the LTM450HT filter in the DT-400W
mod, purchased from the eBay UK seller Mainline. I bought 5 of them and
tested several on the bench before installing one. All had the same poor
skirt selectivity. Initial skirt depth was about 40 db, not bad at all
considering the tiny size of the filter, but it quickly rose to 25 dB about
5 kHz either side of the passband. That's not good enough to give decent
adjacent channel selectivity in strong RF environments. The Murata K 455 kHz
filter that I've installed in Eton E100's and CCrane SWP's has 75-80 dB
skirt depth and it doesn't rise past the passband. It's physically
approximately 4 times longer than the LTM filters, and is an example of an
excellent ceramic filter, and its performance is reflected by its
approximate $50 price.
I'm happy the LTM450HT filter mod worked well for your particular RF
environment. It didn't produce the desired results for me. Apparently our
North American urban RF environments are more challenging than one might
think. :) I don't have that problem in the rural area where I live, with no
strong stations nearby; I send radios to Gary DeBock to test. He's able to
properly evaluate how radios perform in his urban RF environment.
73,
Steve
----- Original Message -----
From: "Michael Slattery" <knallebo@...>
To: <ultralightdx@...>
Sent: Thursday, April 02, 2009 6:47 PM
Subject: Re: [ultralightdx] Re: SRF-M37V and SRF-M37W-Performance
differences?


Whether the 450 kHz filter modification would be useless or not probably
depends on the type of DX you pursue.
Before carrying out a mod you have to determine what you expect.

As the author of the DT-210L & DT-400W filter mod articles, I find the
comment that the mod is 'not worth all the effort' frankly incredible!

The mods were not offered as a panacea for turning these radios into
9/10kHz-split DXers machines. That would be impossible with the type
of filters (6kHz @6dB BW) used. Rather, the articles were offered in
the spirit of improving the usability of these radios in the domestic
context. The give-away line in my article was 'the intrinsic quality
of the audio remains.' By implication therefore, the mod filter is not
especially selective merely an improvement on the original.

The moral of the story is to make sure any ULR you intend to mod for
9/10kHz-split DXing has a 455kHz IF system and the ability to tune in
at least 1kHz steps or better. 450kHz IF radios are a waste of time
since narrow filters with a good shape factor are simply unavailable.

Whilst agreeing fully with the remark by Steve about skirt selectivity
and filter size, I have to ask:

Was the LTM450HT filter used? Nothing else will bring much improvement
except for a LTM450IT or even narrower filter, if you could find one.
The 'T' suffix in the filter model number is important since these
have superior skirt selectivity over those without the 'T' suffix.

Living here in the UK I frequently wonder what North American DXers
mean by a 'high RF environment'. Amongst others I live within 15 miles
of one 150kW & two 400kW MF transmitters & less than 1 mile of two 1kW
MF transmitters.

The DT-210L & DT-400W filter mods have transformed the reception
capabilities of these radios close to these powerful signals. Before
the mod, five (9kHz) channels either side of the frequency of one of
these strong locals were rendered useless for weak signal reception by
the original filter. After the mod I am able to hear weak signals on
the immediately adjacent channels (±9kHz) with only a small level of
adjacent channel interference.

Perhaps your RF environment(s) are not really that challenging? Maybe
that is the reason you are not reaping the reward from the mod?

--
Michael Slattery
Sheffield, UK


Re: DX Logs from SW Ohio

Mark Meece <antennapig@...>
 

satya@... wrote:
Hey Mark:

It's great that the 4 of you got out. As an urbanite who lives in and
amongst a lot of RF noise, your trip summary gives me inspiration to do
the same when the weather improves a bit. With the little ULRs, the entire
DX kit can fit in the the glove compartment! It would probably be an early
morning outting here on the West Coast to hopefully catch stations to the
east switching to day power/antennae and/or trans-pacific targets.

Kevin S
Bainbridge Island, WA


Hi Kevin,

We live in a dense urban environment also, fortunately a half hour drive can
put us in a nice rural setting where the man made noise is lessened considerably.
As you tell from the logs it was mainly a north/south path for this session.

Mark,
Miamisburg, Ohio


Re: DX Logs from SW Ohio

Mark Meece <antennapig@...>
 

Mike wrote:
Hey Mark...Sounds like you guys had a good time. What was the weather like ??

Mike


Hi Mike,

It was a blast. The weather was nice, just a tad chilly.
It was clear and sunny with a stiff breeze that
made it feel more like the mid forties than the lower fifties of the
actually temperature. As the sun started to set just before 8:00 PM
local, the temperatures started a fairly rapid drop.


Mark


Re: DX Logs from SW Ohio

Mike <mwolfson@...>
 

Hey Mark...Sounds like you guys had a good time. What was the weather like ??

Mike

----- Original Message -----
From: "Mark Meece" <antennapig@...>
To: "ultralightdx" <ultralightdx@...>
Sent: Sunday, April 12, 2009 9:17 AM
Subject: [ultralightdx] DX Logs from SW Ohio


Last night the first of hopefully many MONIX DX sessions was held in
the shelter area at the beach at Caesar Creek State Park, near
Waynesville, Ohio. Our geographical coordinates were:

N 39-30-48.4
W 084-01-13.7
Elevation 847 feet

We had four members present. Dan Schwartz, Dave Williams (N8DHW), Alex Kaminski,
and myself. Two were DXing, two were learning the ropes and helping to spot.

Alex (N8UCN) and myself (N8ICW) were doing the main DXing which started
just after 6:00 PM.

Both of us were using ultralight radios. Alex was using the Sony SRF-M37V.
I was using my newly acquired Sony SRF-59, I was also using my
GE Superadio II and Grundig YB400PE as spotting receivers.
No special antennas were utilized.


KEY

(AK) = Alex, N8UCN
(MM) = Mark, N8ICW

AMP = Air Mile Path


760 WJR Detroit, MI PM 50kW AMP 203 (MM)

6:06 PM "Money Talk w/ Bob Sprager", Caller questions.
---

800 CKLW Windsor, ONT 50kW AMP 210 (MM)

6:25 PM Program: "Peter Greenberg Worldwide", talk of Airline Travel.
---

930 WRVC Huntington, WV 5kW AMP 117 (MM)

6:50 PM ESPN Radio, talk about the NFL Draft.
7:00 PM ID: "Your new home for ESPN Radio in the tri-state.
AM 930 WRVC, Huntington/Ashland/Ironton".
----

1510 WLAC Nashville, TN 50kW AMP 277 (AK)


7:00 PM ID, News, rebroadcast of "The Mike McConnell Show".
----

1680 WPRR Grand Rapids,MI 10kW/680w AMP 253 (AK)

7:06 PM Skeptically speaking talk show talking about nuclear power issues.
8:00 PM TOH ID
----

1690 WVON Chicago, IL 10kW AMP 249 (MM)

6:29 (CDT) PM "The Kendall Moore Show" w/ talk of LPGA tour.
6:30 (CDT) PM ID: "The talk of Chicago, 1690 WVON"
----

1690 WMLB Atlanta, GA 10kW AMP 404 (MM)

7:42 PM Program: "E-Town" featuring Singer-Songwriter Kathleen Edwards.
8:00 PM TOH ID: "WMLB". [caught in the null of WVON]
----

1690 WVON Chicago,IL 10kW AMP 249 (AK)

7:00PM (CDT) TOH ID, Local commercials,

======

Thanks to everyone who participated.
We will definitely be doing it again.


Mark, N8ICW




------------------------------------

Yahoo! Groups Links



Re: DX Logs from SW Ohio

satya@...
 

Hey Mark:

It's great that the 4 of you got out. As an urbanite who lives in and
amongst a lot of RF noise, your trip summary gives me inspiration to do
the same when the weather improves a bit. With the little ULRs, the entire
DX kit can fit in the the glove compartment! It would probably be an early
morning outting here on the West Coast to hopefully catch stations to the
east switching to day power/antennae and/or trans-pacific targets.

Kevin S
Bainbridge Island, WA

Last night the first of hopefully many MONIX DX sessions was held in
the shelter area at the beach at Caesar Creek State Park, near
Waynesville, Ohio. Our geographical coordinates were:

N 39-30-48.4
W 084-01-13.7
Elevation 847 feet

We had four members present. Dan Schwartz, Dave Williams (N8DHW), Alex
Kaminski,
and myself. Two were DXing, two were learning the ropes and helping to
spot.

Alex (N8UCN) and myself (N8ICW) were doing the main DXing which started
just after 6:00 PM.

Both of us were using ultralight radios. Alex was using the Sony SRF-M37V.
I was using my newly acquired Sony SRF-59, I was also using my
GE Superadio II and Grundig YB400PE as spotting receivers.
No special antennas were utilized.


KEY

(AK) = Alex, N8UCN
(MM) = Mark, N8ICW

AMP = Air Mile Path


760 WJR Detroit, MI PM 50kW AMP 203 (MM)

6:06 PM "Money Talk w/ Bob Sprager", Caller questions.
---

800 CKLW Windsor, ONT 50kW AMP 210 (MM)

6:25 PM Program: "Peter Greenberg Worldwide", talk of Airline Travel.
---

930 WRVC Huntington, WV 5kW AMP 117 (MM)

6:50 PM ESPN Radio, talk about the NFL Draft.
7:00 PM ID: "Your new home for ESPN Radio in the tri-state.
AM 930 WRVC, Huntington/Ashland/Ironton".
----

1510 WLAC Nashville, TN 50kW AMP 277 (AK)


7:00 PM ID, News, rebroadcast of "The Mike McConnell Show".
----

1680 WPRR Grand Rapids,MI 10kW/680w AMP 253 (AK)

7:06 PM Skeptically speaking talk show talking about nuclear power issues.
8:00 PM TOH ID
----

1690 WVON Chicago, IL 10kW AMP 249 (MM)

6:29 (CDT) PM "The Kendall Moore Show" w/ talk of LPGA tour.
6:30 (CDT) PM ID: "The talk of Chicago, 1690 WVON"
----

1690 WMLB Atlanta, GA 10kW AMP 404 (MM)

7:42 PM Program: "E-Town" featuring Singer-Songwriter Kathleen Edwards.
8:00 PM TOH ID: "WMLB". [caught in the null of WVON]
----

1690 WVON Chicago,IL 10kW AMP 249 (AK)

7:00PM (CDT) TOH ID, Local commercials,

======

Thanks to everyone who participated.
We will definitely be doing it again.


Mark, N8ICW



DX Logs from SW Ohio

Mark Meece <antennapig@...>
 

Last night the first of hopefully many MONIX DX sessions was held in
the shelter area at the beach at Caesar Creek State Park, near
Waynesville, Ohio. Our geographical coordinates were:

N 39-30-48.4
W 084-01-13.7
Elevation 847 feet

We had four members present. Dan Schwartz, Dave Williams (N8DHW), Alex Kaminski, and myself. Two were DXing, two were learning the ropes and helping to spot.

Alex (N8UCN) and myself (N8ICW) were doing the main DXing which started just after 6:00 PM.

Both of us were using ultralight radios. Alex was using the Sony SRF-M37V.
I was using my newly acquired Sony SRF-59, I was also using my GE Superadio II and Grundig YB400PE as spotting receivers. No special antennas were utilized.


KEY

(AK) = Alex, N8UCN
(MM) = Mark, N8ICW

AMP = Air Mile Path


760 WJR Detroit, MI PM 50kW AMP 203 (MM)

6:06 PM "Money Talk w/ Bob Sprager", Caller questions.
---

800 CKLW Windsor, ONT 50kW AMP 210 (MM)

6:25 PM Program: "Peter Greenberg Worldwide", talk of Airline Travel.
---

930 WRVC Huntington, WV 5kW AMP 117 (MM)

6:50 PM ESPN Radio, talk about the NFL Draft.
7:00 PM ID: "Your new home for ESPN Radio in the tri-state.
AM 930 WRVC, Huntington/Ashland/Ironton".
----

1510 WLAC Nashville, TN 50kW AMP 277 (AK)


7:00 PM ID, News, rebroadcast of "The Mike McConnell Show". ----

1680 WPRR Grand Rapids,MI 10kW/680w AMP 253 (AK)

7:06 PM Skeptically speaking talk show talking about nuclear power issues. 8:00 PM TOH ID ----

1690 WVON Chicago, IL 10kW AMP 249 (MM)

6:29 (CDT) PM "The Kendall Moore Show" w/ talk of LPGA tour.
6:30 (CDT) PM ID: "The talk of Chicago, 1690 WVON"
----

1690 WMLB Atlanta, GA 10kW AMP 404 (MM)

7:42 PM Program: "E-Town" featuring Singer-Songwriter Kathleen Edwards.
8:00 PM TOH ID: "WMLB". [caught in the null of WVON]
----

1690 WVON Chicago,IL 10kW AMP 249 (AK)

7:00PM (CDT) TOH ID, Local commercials,

======

Thanks to everyone who participated.
We will definitely be doing it again.


Mark, N8ICW


Updating Audio Recorder Article

John H. Bryant <bjohnorcas@...>
 

Friends,

Now that  my 6 weeks of computer agony seem to be behind me, I'm finally going to do the promised update to the article Recording Audio from Ultralights: Part One, Hand-held Recorders . If anyone has discovered another hand-held in the past couple of months that seems to work well, please upload a paragraph of your impressions and I'll include it in the article.  The units featured so far are:

Mini Disc recorders
MP3 Player/Recorders (iRiver X20)
Digital Audio Recorders:

H4
Edirol
Pogo
Sony UX70
Olympus 1100

I plan to do the update tonight, so please let me know if you have found a new gem.

Thanks!

John Bryant


one log

Allen Willie
 

 
 
Hi Guys,
 
Only one log to report from last night but it was a bit of a rare catch even here at times.
 
1062 khz - DENMARK  Denmarks Radio P3,  Kalundborg   1:12 UTC 4/11/09 w/ interval signal  music sign on , then man talking in Danish language followed by pop songs
SRF-M37V w/ Terk Loop
 
Allen Willie
St. John's, Newfoundland


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Re: Sony SRF M 37 vs SRF M 35.

dhsatyadhana <satya@...>
 

Another good source of info on these two models, primarily from an FM perspective, is here:
http://www.fixup.net/tips/pktradio/pktradio.htm
This reviewer is very much focussed on FM reception and fidelity, so his recommendations might be different than those for a MW DX machine. What struck me is that he states that the noise level on the M37V is much quieter (I have the M37V, and it is indeed a quiet set). He faults the IF section, presumably lamenting an overly-narrow FM IF section.

Kevin S
Bainbridge Island, WA

--- In ultralightdx@..., kevin redding <amfmdx@...> wrote:


On Apr 11, 2009, at 8:59 AM, Horacio Nigro wrote:

A Brazilian guy is querying me about the difference between the
Sony SRF M 37 and SRF M 35.
I don't own anyone, but from the posts read here I understand the
37 is a good UL (I am aware of the performances obtained with it by
Gary Deacon in S. Africa.). And it's better in a non urban
environment. But what's the game with the 35?
I have had both. To me the only difference is the packaging. The
reception is very similar. I do know that if you change the FM filter
the SRF-M35 is a very nice ULR that will really DX FM big time, Of
course the M37 has WX and the M35 does not.

I have two older radios that are good but not excellent UL radios.
The Sony SRF-M40W and an SRF-M33. The 33 is a bit wide though but it
will DX null well and sounds good. The M40W is a great radio and is a
little better than the M37. Both of these radios are rare to find and
they haven't been made in many years.

Mostly I DX with an Eton E-1 or Sony 2010 but do DX with ULRs and for
a good while, I used nothing but the Sony SRF-M40W for about two years.

Kevin


Re: Grundig 300 PE

dhsatyadhana <satya@...>
 

I agree with Jay. The 300 PE (re-branded Tecsun 919) is their bottom-of-the-line digital set, with a small ferrite that runs across the top that does not bode well for AM sensitivity. Even the next model up in their digital line-up, the G1100 (Tecsun DR-920) is still lagging in performance. Having tried the G1100 recently, the analog/digital tuning system that both models (300 PE and G1100) share doesn't seem to work well on MW.

In looking at the first page of eHam reviews, it seems that the positive reviews for the 300 PE were mainly for FM and/or SW performance, not AM. Also, advanced information from Gary DeBock, who is evaluating the 300 PE as part of the upcoming Shoot-Out, indicates that this is not a model worth rushing out and getting.

If you're in the market for a digital set, the Eton e100 and Sangean DT-400W are capable performers; the e100 is the most selective ULR, while the DT-400W is the most sensitive. However, if you are an urban DXer, the unparalleled nulling performance of the Kaito WRX-911 that Jay mentioned might be the way to go, at a rock-bottom price.

Kevin S
Bainbridge Island, WA

--- In ultralightdx@..., Jay Heyl <yahoogroups@...> wrote:

On Sat, Apr 11, 2009 at 7:04 AM, John Moore 3rd <jmoore3rd_1@...>wrote:

Can anyone either give Me a Review of the 300 PE or direct Me to a link
to a Review?

Amazon will no doubt have a number of reviews. Same at eham. If you're
referring to the Mini 300PE that comes in a variety of colors, it's a so-so
radio. About the only thing really in its favor is the digital display.
Aside from that, there are a number of better choices for less money. The
Kaito WRX911 at $15 springs immediately to mind.

-- Jay