Date   

Re: Good UL for FM ?? p.s.

dave_m1ctk
 

Why not the tiny Tecsun PL-310 - Truely amazing DSP portable - Only from ebay it seems though


On 19 September 2010 01:27, neilbellgroups <neil.bell@...> wrote:
 

She wants a digital and not pocket sized - reasonable size like a 7600 or smaller

Neil
KJ6FBA



--- In ultralightdx@..., keith beesley wrote:
>
> The current coat-pocket-sized Sony is the ICF-38:
>
> http://www.amazon.com/s/ref=nb_sb_ss_i_0_10?url=search-alias%3Delectronics&field-keywords=sony+icf38+portable+am+fm+radio&sprefix=sony+icf38
>
> For some reason, my S10 MK2's receive weaker FM stations with greater clarity when the whip antenna is fully collapsed:
>
> http://www.amazon.com/Sony-ICF-S10MK2-Pocket-Radio-Silver/dp/B00020S7XK/ref=sr_1_1?s=electronics&ie=UTF8&qid=1284854897&sr=1-1
>
> (I'm not necessarily endorsing Amazon, just stealing their pictures)
>
> --- On Sat, 9/18/10, keith beesley wrote:
>
> > From: keith beesley

> > Subject: Re: [ultralightdx] Good UL for FM ??
> > To: ultralightdx@...
> > Date: Saturday, September 18, 2010, 4:47 PM
> > Neil,
> >
> > For general-purpose listening, you can't go wrong with a
> > Sony S10-MK2. Pocket-sized, good reception and speaker sound
> > for its size, good build quality, batteries last a long time
> > (analog tuning, no digital doodads to drain them). Widely
> > available new for $10-15. I keep a couple around the house
> > and in the cars for power failures, etc. Usable with
> > headphones or earbuds, but you'll need an adapter to make
> > the sound play in both ears.
> >
> > For something a little larger, the Sony ICF-34 or the
> > equivalent (don't remember the current model no.).
> >
> > Keith 
> >
> > --- On Sat, 9/18/10, neilbellgroups
> > wrote:
> >
> > > From: neilbellgroups

> > > Subject: [ultralightdx] Good UL for FM ??
> > > To: ultralightdx@...
> > > Date: Saturday, September 18, 2010, 4:20 PM
> > > No interest in Dxing but want to
> > > recommend a GOOD FM broadcast radio (reasonably
> > small,
> > > portable) for my daughter.
> > >
> > > Neil Bell
> > > KJ6FBA
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >     ultralightdx-fullfeatured@...
> > >
> > >
> > >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >     ultralightdx-fullfeatured@...
> >
> >
> >
>



Re: Good UL for FM ?? p.s.

neilbellgroups <neil.bell@...>
 

She wants a digital and not pocket sized - reasonable size like a 7600 or smaller

Neil
KJ6FBA

--- In ultralightdx@..., keith beesley <keith1226@...> wrote:

The current coat-pocket-sized Sony is the ICF-38:

http://www.amazon.com/s/ref=nb_sb_ss_i_0_10?url=search-alias%3Delectronics&field-keywords=sony+icf38+portable+am+fm+radio&sprefix=sony+icf38

For some reason, my S10 MK2's receive weaker FM stations with greater clarity when the whip antenna is fully collapsed:

http://www.amazon.com/Sony-ICF-S10MK2-Pocket-Radio-Silver/dp/B00020S7XK/ref=sr_1_1?s=electronics&ie=UTF8&qid=1284854897&sr=1-1

(I'm not necessarily endorsing Amazon, just stealing their pictures)

--- On Sat, 9/18/10, keith beesley <keith1226@...> wrote:

From: keith beesley <keith1226@...>
Subject: Re: [ultralightdx] Good UL for FM ??
To: ultralightdx@...
Date: Saturday, September 18, 2010, 4:47 PM
Neil,

For general-purpose listening, you can't go wrong with a
Sony S10-MK2. Pocket-sized, good reception and speaker sound
for its size, good build quality, batteries last a long time
(analog tuning, no digital doodads to drain them). Widely
available new for $10-15. I keep a couple around the house
and in the cars for power failures, etc. Usable with
headphones or earbuds, but you'll need an adapter to make
the sound play in both ears.

For something a little larger, the Sony ICF-34 or the
equivalent (don't remember the current model no.).

Keith 

--- On Sat, 9/18/10, neilbellgroups <neil.bell@...>
wrote:

From: neilbellgroups <neil.bell@...>
Subject: [ultralightdx] Good UL for FM ??
To: ultralightdx@...
Date: Saturday, September 18, 2010, 4:20 PM
No interest in Dxing but want to
recommend a GOOD FM broadcast radio (reasonably
small,
portable) for my daughter.

Neil Bell
KJ6FBA



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

Yahoo! Groups Links


    ultralightdx-fullfeatured@...



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

Yahoo! Groups Links


    ultralightdx-fullfeatured@...



Re: Good UL for FM ?? p.s.

keith beesley
 

The current coat-pocket-sized Sony is the ICF-38:

http://www.amazon.com/s/ref=nb_sb_ss_i_0_10?url=search-alias%3Delectronics&field-keywords=sony+icf38+portable+am+fm+radio&sprefix=sony+icf38

For some reason, my S10 MK2's receive weaker FM stations with greater clarity when the whip antenna is fully collapsed:

http://www.amazon.com/Sony-ICF-S10MK2-Pocket-Radio-Silver/dp/B00020S7XK/ref=sr_1_1?s=electronics&ie=UTF8&qid=1284854897&sr=1-1

(I'm not necessarily endorsing Amazon, just stealing their pictures)

--- On Sat, 9/18/10, keith beesley <keith1226@...> wrote:

From: keith beesley <keith1226@...>
Subject: Re: [ultralightdx] Good UL for FM ??
To: ultralightdx@...
Date: Saturday, September 18, 2010, 4:47 PM
Neil,

For general-purpose listening, you can't go wrong with a
Sony S10-MK2. Pocket-sized, good reception and speaker sound
for its size, good build quality, batteries last a long time
(analog tuning, no digital doodads to drain them). Widely
available new for $10-15. I keep a couple around the house
and in the cars for power failures, etc. Usable with
headphones or earbuds, but you'll need an adapter to make
the sound play in both ears.

For something a little larger, the Sony ICF-34 or the
equivalent (don't remember the current model no.).

Keith 

--- On Sat, 9/18/10, neilbellgroups <neil.bell@...>
wrote:

From: neilbellgroups <neil.bell@...>
Subject: [ultralightdx] Good UL for FM ??
To: ultralightdx@...
Date: Saturday, September 18, 2010, 4:20 PM
No interest in Dxing but want to
recommend a GOOD FM broadcast radio (reasonably
small,
portable) for my daughter.

Neil Bell
KJ6FBA



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

Yahoo! Groups Links


    ultralightdx-fullfeatured@...



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

Yahoo! Groups Links


    ultralightdx-fullfeatured@...



Re: Good UL for FM ??

keith beesley
 

Neil,

For general-purpose listening, you can't go wrong with a Sony S10-MK2. Pocket-sized, good reception and speaker sound for its size, good build quality, batteries last a long time (analog tuning, no digital doodads to drain them). Widely available new for $10-15. I keep a couple around the house and in the cars for power failures, etc. Usable with headphones or earbuds, but you'll need an adapter to make the sound play in both ears.

For something a little larger, the Sony ICF-34 or the equivalent (don't remember the current model no.).

Keith

--- On Sat, 9/18/10, neilbellgroups <neil.bell@...> wrote:

From: neilbellgroups <neil.bell@...>
Subject: [ultralightdx] Good UL for FM ??
To: ultralightdx@...
Date: Saturday, September 18, 2010, 4:20 PM
No interest in Dxing but want to
recommend a GOOD FM broadcast radio (reasonably small,
portable) for my daughter.

Neil Bell
KJ6FBA



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

Yahoo! Groups Links


    ultralightdx-fullfeatured@...



Good UL for FM ??

neilbellgroups <neil.bell@...>
 

No interest in Dxing but want to recommend a GOOD FM broadcast radio (reasonably small, portable) for my daughter.

Neil Bell
KJ6FBA


Re: ULR DX...NEW 250 Watter with Highschool Football!!.........

rick robinson <w4dst@...>
 

kevin asato wrote:


Cool. I remember trying to broadcast high school football with a 10W FM transmitter. We were lucky to have the signal get 1 mile off campus! (formerly/defunct KNHS - North Torrance, CA)
Friday nights during high school football season are a great way to log stations you wouldn't normally hear.  Small town stations, large market ones too, tend to fudge on FCC rules and run daytime power and daytime antenna patterns while games are in progress.  The FCC apparently has historically looked the other way since this only happens once a week for roughly 3 months and almost all stations cut power and return to night time patterns at the conclusion of the game.  With the internet, it is easier to ID the stations if they don't by doing a Google on the names of the high schools playing. 

Lots of graveyarders and locals between 900kHz and 990kHz are stronger than normal here during Friday night games.

Rick W4DST
Hendersonville, NC


Sony SRF-59 problem

Peter 1956
 

Hi all,

My SRF-59 is behaving strangely. The volume on both FM and AM is a lot lower than it was, and furthermore, increasing the volume means less sound! I had accidently left it switched on in my pocket, and the battery leaked liquid out. I have tried two different new batteries so it is not a battery problem. Anyone else had a similar problem with this model? (I have only had it a few weeks)

Peter, Blackpool UK


Re: Strong Chinese on 657 kHz

bbwrwy
 

Gary:

Congratulations on the catch and thanks for posting the recordings for us to listen.

I did check 657 kHz several times this morning but heard nothing. Of course you have the advantage of the time and distance over me. Local sunrise here was at 1215 UTC.

The best signal here this morning was again JOUB 774 which broke through with patches of audio fading in and out between 1151 and 1206. A het was still audible at 1226 kHz.

A slight het was noticed on 828 at 1159-1210.

Nothing was audible on 972 kHz until 1207 when a slight het was appeared.

I also listened on 594, 666, 693, 747 (too much QRM), 1153, 1134, and 1566 kHz with no results. Also checked 567 and 675 a few times hoping to hear RNZ. I've read in RADEX and other ancient articles stating the best period for hearing signals from New Zealand and Australia in central North America was around the equinox. I'm always surprised to read how common such reception was prior to World War Two.

Have a great weekend and the best of DX.

Richard.

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

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

Hello All,

This morning during excellent TP-DXing conditions there was one of the
more bizarre Asiatic fade-ins that was ever observed here, and I was curious
whether any of the other TP-DXers noticed it.

Around 1333 UTC a weakened 657-Pyongyang BS Korean-speaking YL was alone
on the frequency, when suddenly a Mandarin Chinese station appeared under
Pyongyang and completely overcame the NK station within a minute, leaving no
trace of Pyongyang _http://www.mediafire.com/?i3yln7vt34sw6k3_
(http://www.mediafire.com/?i3yln7vt34sw6k3) .
The Chinese station was alone on the frequency at a strong level for 5
minutes, with apparent news and Chinese pop music
_http://www.mediafire.com/?176l0s1w9way10x_ (http://www.mediafire.com/?176l0s1w9way10x) . After
dominating the frequency for about 5 minutes, the UnID Chinese station finally
faded back into the noise, allowing Pyongyang to weakly return to the
frequency.

Chinese has never been heard on 657 kHz here, so the station would be a new
TP if I can determine the identity. Any suggestions from the Grayland
experts would be appreciated. In addition to this reception, 891 kHz also had a
strong UnID mystery here this morning, and several other frequencies had
very interesting TP signals. I hope you guys had as much fun as I did!

73, Gary DeBock (in Puyallup, WA)
Modified C.Crane SWP Ultralight + 9' PVC Loop


Puyallup, WA Ultralight TP's for 9-18

Gary DeBock
 

Hello All,
 
It was another excellent morning for Asiatic reception here, although most of the propagation seemed concentrated on the lower band, and signals did seem to drop down somewhat from 1230 to 1310 UTC (which was the beginning of sunrise enhancement here). An all-new Chinese station on 657 kHz was the highlight, with strangely strong signals completely replacing Pyongyang for about 5 minutes from 1335-1340 (this should be Henan, according to Chuck's Grayland DXpedition experience). Another mystery station was on 891 kHz on top of a weaker TP, and certainly didn't seem Japanese. The lower-band Asiatic stations generally had decent audio, and the presumed Chinese stations on 1035 and 1044 were producing fair audio at times. The high-band "big gun" stations on 1377, 1566 and 1575 kHz didn't seem particularly vibrant, though, and the 1134 khz TP mix was not at its usual strength. In general it was an exciting morning, though, and a good indication of the new season's potential.   
 
The following were received on a C.Crane SWP Slider model (7.5" loopstick) inductively coupled to a 9' PVC tuned passive loop in the back yard:
 
585  JOPG  Kushiro, Japan  Fair to good NHK1 audio at 1305, sigs like JOAK
594  JOAK  Tokyo, Japan  Not much stronger than its 585 // this morning
603  HLSA  Namyang, S. Korea  Fair Korean speech over weak Chinese, 1317
639  CNR1  Beijing, China  Fading in and out at a weak level all morning
648  VOR  Razdolnoye, Russia  Good signals with Chinese program at 1325
657  Pyongyang BS,  N. Korea  Dominant for most of morning with Korean 
          tirades at decent strength; SSB carrier had typical rough edge
657  UnID-China (presumed Henan)  Strong fade-in replacing Pyongyang at 1335;
          continued at good strength for 5 minutes with Chinese news and some
          music; first time heard here http://www.mediafire.com/?176l0s1w9way10x
666  JOBK  Osaka, Japan  Fair-good Japanese conversation at 1322, // 594
675  VOV  Hanoi, Vietnam  Fair-good Vietnamese signal through 680 splatter 
738  BEL2  Penghu, Taiwan  Chinese pop music program weaker than usual
747  JOIB  Sapporo, Japan  Good Japanese signals through KXL splatter, 1306
774  JOUB  Akita, Japan  Way under KTTH splatter with NHK2 program at 1308
828  JOBB  Osaka, Japan  Fair signal at 1309 over UnID music station (Chinese?)
891  UnID  Mystery station at fair level on quiet frequency-- doesn't sound Japanese.
           Maybe Thailand, or China?  http://www.mediafire.com/?qablsjvv6jfor59
972  HLCA  Dangjin, S. Korea  Good Korean conversation at 1304
1035  China (presumed)  Chinese speech and music in and out at fair level, 1303
1044  China (presumed)  Weak threshold audio with rare peaks at a fair level, 1301
1053  Korean Jammer  Good signal for most of morning, but not overpowering like
            during some recent sessions. No co-channel TP's this morning.
1134  TP-Mix  Fair- good signal at 1346 with JOQR and KBS apparently fighting it out
1377  China (presumed)  Anemic audio at best around 1348; weaker than usual
1566  HLAZ  Jeju, S. Korea Japanese religious program fair to poor from 1300-1330
1575  VOA Ban Rassom, Thailand  Threshold Asiatic language audio at best, 1300-1330
 
For those interested in a full recording of the 657-China station's fade-in (including some nice music) this morning, a 2.03 MB file is linked at  http://www.mediafire.com/?4y7ksan22mw8ztn  .
 
73 and Good DX,
Gary DeBock
     


Re: How to find LW stations in/near San Diego, CA?

Russ Edmunds <wb2bjh@...>
 

I wouldn't expect to get any distant LW reception on a barefoot ULR. Most simply don't have large enough ferrite bar antennas ( and often not tuned adequately for LW either ) to meet the need.

Russ Edmunds
Blue Bell, PA ( 360' ASL )
[15 mi NNW of Philadelphia]
40:08:45N; 75:16:04W, Grid FN20id

FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15'
AM: Modified Sony ICF 2010 barefoot


--- On Sat, 9/18/10, Kevin S wrote:

From: Kevin S
Subject: Re: [ultralightdx] How to find LW stations in/near San Diego, CA?
To: ultralightdx@...
Date: Saturday, September 18, 2010, 10:30 AM

 

Hi Stephen:

I think your only realistic chances for broadcast stations are the big
guns out of Russia, especially on 153, 171, 189, 234 and 279 khz. European
LW stations may show up once in a while in the evenings your time, but
don't hold your breath. There are no LW broadcast stations in the
Americas, although those of us in urban areas get a lot of local MW
stations causing images on the LW band. For a reference, check out:
http://www.asiawaves.net/longwave-radio.htm
You can also hear a lot of Morse code beacons in the 200-420 khz range,
which is a fun aspect of the DX hobby.

Also, you will probably need some sort of booster, since the LW
sensitivity of the 380 is somewhat lacking. A Quantum Q-Stick
(dxtools.com) is a good choice, and about the only commercially-available
option, which turns your portable's ferrite antenna into the equivalent of
an 8" version. A more substantial upgrade would be a standard office
filing crate (or preferably larger frame) with about 350-400 feet of wire
(some 75-85 turns on the crate), tuned with a variable capacitor like the
N50P from crystalradiosupply.com (see page 9 the Crate Loop article in
File folder #5, Air Core Loop Antennas sub-folder, here on the Group).

Kevin

> Hi all...
>
> I'm having difficulty (read: it's impossible) hearing any LW audio
> (english, spanish, etc - I don't care) on any frequencies on my PL-380,
> whether it's barefoot, or inductively coupled to a metal fence or power
> pole. (At the pole, any audio I DO hear is usually an intermod from a
> local mediumwave station.)
> Does anyone know of a source where I could look up various LW frequencies
> in my area, so I can try to tune them in and see if I can receive them?
> Also, what do you listen for, and if the LW signal isn't modulating with
> speech / music / etc, how can you tell if you have a signal when the
> RSSI/SNR display is reading 15,00 (but you think you have something
> because it sounds different on a particular channel)?
> For now, any LW reception I get will have to either be barefoot (with the
> factory-supplied antenna) or coupled to an untuned fence or power pole.
> Also when is the best time to try to tune around for LW? I'm in San
> Diego, CA, and am a bit surprised that no LW stations from Asia are making
> it this far across the Pacific (I believe I may be a little closer than
> Gary D), especially with the lower path loss and the high conductivity of
> the saltwater (Pacific Ocean).... but then I guess the TP LW stations are
> probably running something less than 1 megawatt into a Franklin antenna
> (two stacked 180° elements, insulated & fed at the center). ;)
> So... any tips for confirming any possible LW reception on my PL-380 here
> in San Diego?
>
>



Re: How to find LW stations in/near San Diego, CA?

Kevin S <satya@...>
 

Hi Stephen:

I think your only realistic chances for broadcast stations are the big
guns out of Russia, especially on 153, 171, 189, 234 and 279 khz. European
LW stations may show up once in a while in the evenings your time, but
don't hold your breath. There are no LW broadcast stations in the
Americas, although those of us in urban areas get a lot of local MW
stations causing images on the LW band. For a reference, check out:
http://www.asiawaves.net/longwave-radio.htm
You can also hear a lot of Morse code beacons in the 200-420 khz range,
which is a fun aspect of the DX hobby.

Also, you will probably need some sort of booster, since the LW
sensitivity of the 380 is somewhat lacking. A Quantum Q-Stick
(dxtools.com) is a good choice, and about the only commercially-available
option, which turns your portable's ferrite antenna into the equivalent of
an 8" version. A more substantial upgrade would be a standard office
filing crate (or preferably larger frame) with about 350-400 feet of wire
(some 75-85 turns on the crate), tuned with a variable capacitor like the
N50P from crystalradiosupply.com (see page 9 the Crate Loop article in
File folder #5, Air Core Loop Antennas sub-folder, here on the Group).

Kevin

Hi all...

I'm having difficulty (read: it's impossible) hearing any LW audio
(english, spanish, etc - I don't care) on any frequencies on my PL-380,
whether it's barefoot, or inductively coupled to a metal fence or power
pole. (At the pole, any audio I DO hear is usually an intermod from a
local mediumwave station.)
Does anyone know of a source where I could look up various LW frequencies
in my area, so I can try to tune them in and see if I can receive them?
Also, what do you listen for, and if the LW signal isn't modulating with
speech / music / etc, how can you tell if you have a signal when the
RSSI/SNR display is reading 15,00 (but you think you have something
because it sounds different on a particular channel)?
For now, any LW reception I get will have to either be barefoot (with the
factory-supplied antenna) or coupled to an untuned fence or power pole.
Also when is the best time to try to tune around for LW? I'm in San
Diego, CA, and am a bit surprised that no LW stations from Asia are making
it this far across the Pacific (I believe I may be a little closer than
Gary D), especially with the lower path loss and the high conductivity of
the saltwater (Pacific Ocean).... but then I guess the TP LW stations are
probably running something less than 1 megawatt into a Franklin antenna
(two stacked 180 elements, insulated & fed at the center). ;)
So... any tips for confirming any possible LW reception on my PL-380 here
in San Diego?


MI LOG - AM/FM

wa8lcz
 

MW
17SEP2010 FRI SFI=83-6-3 SR0715 SS1939 SUNSPOTS 20
710 CMW LA JULIA LA HABANA CUBA RADIO REBELDE 2230EDT 150K 1345 MI (CUBA#12)
ECHO ON AUDIO, FLEXING SAW, MUSIC

FM
18SEP2010 SAT SFI=82-9-2 SR0716 SS1937 SUNSPOTS 41
90.5 WERG ERIE PA ALTERNATIVE GANNON UNIV 0717EDT 3KW 150 MI (PA02)


FM TOTALS: 155, MI80,OH29,NC01,PA02,ONTARIO 39,TX01,NM01,NY02
RCVR: Eton E10
ANT: Moxon 2 ele folded wire yagi, indoors

Byron WA8LCZ nr Detroit MI


Strong Chinese on 657 kHz

Gary DeBock
 

Hello All,
 
This morning during excellent TP-DXing conditions there was one of the more bizarre Asiatic fade-ins that was ever observed here, and I was curious whether any of the other TP-DXers noticed it.
 
Around 1333 UTC a weakened 657-Pyongyang BS Korean-speaking YL was alone on the frequency, when suddenly a Mandarin Chinese station appeared under Pyongyang and completely overcame the NK station within a minute, leaving no trace of Pyongyang http://www.mediafire.com/?i3yln7vt34sw6k3 .
The Chinese station was alone on the frequency at a strong level for 5 minutes, with apparent news and Chinese pop music http://www.mediafire.com/?176l0s1w9way10x . After dominating the frequency for about 5 minutes, the UnID Chinese station finally faded back into the noise, allowing Pyongyang to weakly return to the frequency.
 
Chinese has never been heard on 657 kHz here, so the station would be a new TP if I can determine the identity. Any suggestions from the Grayland experts would be appreciated. In addition to this reception, 891 kHz also had a strong UnID mystery here this morning, and several other frequencies had very interesting TP signals. I hope you guys had as much fun as I did!
 
73, Gary DeBock (in Puyallup, WA)
Modified C.Crane SWP Ultralight + 9' PVC Loop
 
    


weird 760 (PL-380), 910, 1170 (other radio) sound, replacing PL-380 or RQ-SW20?

pianoplayer88key
 

This happens when I couple the PL-380 to a Select-A-Tenna (tuned to 760), which in turn is coupled (via a ground wire running down a pole) to a 56.53 meter (185.5 foot) longwire antenna running north and south, probably about 20 to 40 feet off the ground. (The "antenna" does continue farther - I just measured (via Google overhead map view) the distance from one pole to the next).

http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/760%20KFMB%20-%20PL-380%20%5E5coupled%20to%20SAT%20%5E0%20longwire%20antenna%20starting%20approx%2044%20sec%5E6.mp3

Listen after about 44 seconds or so. Before that, the PL-380 was a few inches away from the SAT to keep the audio clean enough to hear the TOH ID (and portions of a couple spots (one of which would have been a minute long but I edited it)). This was recorded out in my front yard.

Also, at the same location, I recorded a similar, but somewhat less severe sound on KECR-910...

http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/910%20KECR%20-%20PL-380%20%5E5coupled%20to%20SAT%20%5E0%20longwire%20antenna%20after%20TOH%20ID%5E6.mp3

Both stations are at the 63dBu cap on my PL-380. Based on measuring diffferences between outdoor and inside-a-car measurements on my PL-380, then adding those differences to the in-car measurements, I would estimate the barefoot PL-380 RSSI (with a few dBu margin of error) to be approximately 81-90 dBu on 760, and 69-75 dBu on 910 if it wasn't for the 63dBu cap.


Also... I used a similar antenna setup, but at a different location (in this case it was 32°53'37.86"N 116°55'40.44"W) and with a different radio (and at a different time of day - this was day, the preceeding was at night).... and heard this...

http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/1170%20KCBQ%20-%20very%20UNsensitive%20radio%20with%20SAT%20%5EM%20power%20pole%20at%2032%2053%2037.86%20n%20116%2055%2040.44%20w.mp3

The radio didn't have a line-out jack, so I had to put my radio next to the speaker, which is why you could occasionally hear a couple cars driving by. The radio itself consists of a small loopstick antenna, a germanium diode, a resistor, and the speaker (normally a high-impedance crystal earphone would be used, but one of the wires had broken off in transit and I didn't have a wire stripper with me), and doesn't require any battery power to operate.
At around 16 seconds, I brought the radio up to the SAT, whereas before it had been a couple inches away to keep the sound cleaner. The station that was tuned in was KCBQ-1170... and btw the selectivity on that radio is poor enough so that it was heard across the entire band.
Here's a picture of that radio....
http://picasaweb.google.com/PianoPlayer88Key/RadioPicsStuff?authkey=Gv1sRgCIer0efojpPg8AE#5518155768278107042

When I use the PL-380 at the same site with the same antenna setup, I get a RSSI & SNR around 22,04 on 81.9 MHz in the FM band, with a sound like...
http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/1170%20KCBQ%20-%2081.9%20FM%20%5E522%5EJ04%5E6%20-%20PL-380%5EJ%20SAT%5EJ%20Power%20Pole%20near%2032%2053%2038%20n%20116%2055%2040%20w.mp3

And, a pic (in this case, tuned to 70.2 MHz), complete with background scenery... ;)
http://picasaweb.google.com/PianoPlayer88Key/KCBQKECRKOGOPL380?authkey=Gv1sRgCM-14fj-3ZWVywE#5518158780197048850


Also, on the PL-380 (same station), I get this sound constantly in the background...

http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/1170%20KCBQ%20sound%20in%20PL-380%20%5E5SAT%20%5E0%20longwire%20antenna%20near%2032%2053%2038%20n%20116%2055%2040%20w%5E6%20-%20sound%20always%20there%20except%20if%20power%20off.mp3

... and it doesn't matter what frequency I tune to, what bandwidth selection I use, or whatever - it's ALWAYS there. In fact, the instant I press the power button to turn the radio on, I hear this sound immediately, and it persists until the radio's power has completely switched off (except for the clock display of course), a second or two AFTER pressing the power button. What would cause that?
Also, while it didn't happen today (although I will admit I tried - I wanted a picture of it), I actually saw a 00,00 reading on 1170 with the same setup another time I was there with the same setup. As for the harmonic strength, ALL of the MW and SW harmonics tunable were indicating 63dBu.


Which finally leads to... (yes, you guessed it)... How do I prevent overload from the strong stations... when trying to DX on the nearest splits from the above blowtorches? Assume the signal I'm trying to receive is so weak that I NEED that much amplification just to bring the signal up TO, well, what the noise floor / carrier detection threshold WOULD be if the '380 was in an area where the following RSSI/SNR combo would be possible...
http://picasaweb.google.com/PianoPlayer88Key/TecsunPL380#5512630996181854194

Or, better yet, is there a pocket-sized ultralight that will handle this better? I don't expect to be able to separate out a 0.6144µV signal 1kHz from a 614.4V signal, but I WOULD like to be able to cleanly hear 20µV signals 10kHz divorced from 4V signals without any splatter or desense, if at all possible. Also, is there a way to combat selective fading? And, another thing, I was tuning around on shortwave and heard a very distorted audio signal. (It wasn't overloading - the RSSI & SNR was probably somewhere below 25 if I remember correctly.) What mode would a radio need in order to cleanly recover that audio? Also, I've heard something about passband tuning being able to help with co-channel interference when the carriers aren't quite frequency synchonized... or is that wishful thinking? If it is usable, then is there any ultralight-sized/priced unit that might have that?
My main interest is excellent AM performance, btw. I'd be willing to give up LW, SW & FM capabilities... but let me clarify. If they are available, I want them to be every bit as good as the AM section I'm asking for... and for the LW and SW, I would want continuous coverage from 150kHz to 30MHz. Otherwise, I'd prefer not to have them included, so the cost of the radio could be concentrated entirely on the mediumwave section. (And, yes, of course, I would want multiple bandwidths in the AM section.)

In the meantime, I'm about ready to give up on TPs. :( I'm thinking that once I can find a radio that will do the domestic groundwave DX I was wanting to do in the first place when I heard about the PL-380 (and even before it was made), I might get back into it. That groundwave DX includes, but is not limited to: hearing KNBR-680, KALL-700, KPSI-920 (even if it's mixing with XESDA-920), KDIS-1110 (the PL-380 very faintly hears this under a 41,00 desense from KSDO-1130 & KCBQ-1170), KNWQ-1140, (if possible) KSL-1160 (probably would be under XEQIN-1160), KERN-1180, KTDD-1350, all without any QRM from any locals, from El Cajon, Santee, San Diego, etc, and also hearing KKDD-1290 at zip code 91775, without any QRM from KAZN-1300.

Basically, I was looking to replace my Panasonic RQ-SW20 radio + cassette player with something smaller that could cleanly receive signals that were totally overwhelmed by adjacents (who themselves were splattering across several channels each way in some cases)... and so far the PL-380 has been a disappointment due to the desense from locals. I think it WOULD have enough sensitivity to hear the stations I want, if the front-end selectivity was better. However, it's nearly impossible to put my PL-380 in my pocket, which was the original plan for the radio I was (and still am) looking for. :&#92;

Speaking of that Panasonic RQ-SW20... here's a few comparison clips between it and the PL-380 at various frequencies (both radios barefoot), recorded at approximately 32°53'33"N 116°55'39"W...
860 XEMO (facing (not nulling) 5kW 910 up the street, like all others except where noted otherwise) - http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/860%20XEMO%20-%20RQ-SW20%20vs%20PL-380%20%5E5near%2032%2053%2033%20n%20116%2055%2039%20w%5E6.mp3
1040 KURS - http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/1040%20KURS%20-%20RQ-SW20%20vs%20PL-380%20%5E5near%2032%2053%2033%20n%20116%2055%2039%20w%5E6.mp3
1070 KNX (nulling 50kW 1170 up the street) - http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/1070%20KNX%20%5E5null%201170%5E6%20-%20RQ-SW20%20vs%20PL-380%20%5E5near%2032%2053%2033%20n%20116%2055%2039%20w%5E6.mp3
1090 XEPRS (nulling 1170) - http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/1090%20XEPRS%20%5E5null%201170%5E6%20-%20RQ-SW20%20vs%20PL-380%20%5E5near%2032%2053%2033%20n%20116%2055%2039%20w%5E6.mp3
1470 XERCN - http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/1470%20XERCN%20-%20RQ-SW20%20vs%20PL-380%20%5E5near%2032%2053%2033%20n%20116%2055%2039%20w%5E6.mp3

As you can tell, the RQ-SW20 had a MUCH easier time with those signals than the PL-380... in spite of the RQ-SW20 having terrible selectivity, being about 800 feet from 1170 and 910's southwesternmost tower...
http://cid-6bdd1917662288cb.office.live.com/self.aspx/AM%20radio%20files/2010-09-18/1170%20KCBQ%20-%20RQ-SW20%20tuning%20from%201170%20to%201710%20%5E5tune%20LED%20unlit%20at%201370%20except%201440%20%5E0%201530%20IMDs%5E6%20%5E50540pm%20near%2032%2053%2033%20n%20116%2055%2039%20w%5E6.mp3

What gives? I really was expecting the PL-380 to clearly hear stations that were totally overwhelmed on the RQ-SW20, but it actually seems to be the other way around. :( My wish to find a pocket radio that could hear the stations my Panasonic had absolutely NO chance with was one thing that led me to ultralightdx in the first place, having read about some radios that had exceptional sensitivity and selectivity for their size... but so far I seem to have made the wrong choice. (It's too late to return the PL-380 now, though, and I doubt anyone would want it anyway considering the tuning knob has broken twice, besides the inexcusable desense.)


How to find LW stations in/near San Diego, CA?

pianoplayer88key
 

Hi all...

I'm having difficulty (read: it's impossible) hearing any LW audio (english, spanish, etc - I don't care) on any frequencies on my PL-380, whether it's barefoot, or inductively coupled to a metal fence or power pole. (At the pole, any audio I DO hear is usually an intermod from a local mediumwave station.)
Does anyone know of a source where I could look up various LW frequencies in my area, so I can try to tune them in and see if I can receive them? Also, what do you listen for, and if the LW signal isn't modulating with speech / music / etc, how can you tell if you have a signal when the RSSI/SNR display is reading 15,00 (but you think you have something because it sounds different on a particular channel)?
For now, any LW reception I get will have to either be barefoot (with the factory-supplied antenna) or coupled to an untuned fence or power pole. Also when is the best time to try to tune around for LW? I'm in San Diego, CA, and am a bit surprised that no LW stations from Asia are making it this far across the Pacific (I believe I may be a little closer than Gary D), especially with the lower path loss and the high conductivity of the saltwater (Pacific Ocean).... but then I guess the TP LW stations are probably running something less than 1 megawatt into a Franklin antenna (two stacked 180° elements, insulated & fed at the center). ;)
So... any tips for confirming any possible LW reception on my PL-380 here in San Diego?


Re: Failure of East coast LW DX try-FARMERIK

Gary DeBock
 

Hi Farmerik,
 
The PL-360 can be enabled to receive LW by turning the radio off, and holding down the 9/10 kHz switch key (the same as the "DEL" key) until "9 kHz" disappears on the digital display, and the clock display comes back. After turning the PL-360 back on, the radio will be on the FM band, so you'll need to press the "MW" key. Then your display should show "150 kHz," and you will be ready to tune the PL-360's LW (and MW)band in 9 kHz steps, all the way up to 1620 kHz.
 
The PL-360 can tune LW in 1 kHz steps, although this must be done manually, with the tuning knob rotated at a slow rate. When rotated at a fast rate, the tuning knob shifts to the standard 9 kHz step frequencies. In LW the digital tuning functions only work in 9 kHz steps, and there is no distinct "LW" band on the PL-360 (or "LW" selection on the front panel), since the frequencies are simply added to the MW frequencies on the 9 kHz band plan. In this arrangement, the user can tune from 153 kHz all the way up to 1620 kHz in 9 kHz steps. Slowing down the tuning knob rotation can allow the user to tune down to 150 kHz, however. The lack of any "LW" selection on the front panel can mislead new users into thinking that the radio lacks LW coverage (even me, originally). 
 
The first 7.5" Longwave plug-in loopstick made here for the PL-360 (a 2000 uh coil of 120 turns of 40/44 Litz wire centered on the Type 33 ferrite bar) had excellent performance chasing LW-TP's during two Oregon beach DXpeditions this summer when used with a PL-380 model, receiving 5 Radio Rossii TP's on 153, 180, 189, 234 and 279 kHz at good signal levels as a stand-alone antenna. Unfortunately various technical projects are backlogged here because of the sudden passing of my wife's father in Hong Kong, causing a temporary shortage of hobby time as I play "single father" for 3 weeks. Otherwise several hobby projects (including the LW plug-in loopstick testing and construction) would have been completed by now, and of course I still do plan to finish these up as time allows.
 
73, Gary DeBock
Puyallup, WA  
 

In a message dated 9/17/2010 5:38:46 P.M. Pacific Daylight Time, farmerik@... writes:
 

I just couldn't switch the radio to the band which includes LW. I have done this at home hundreds of times. I have transformers for both AM BCB and for LW in a set up much like Jim's, and a couple different coils to try wound for LW. None of those set ups works with the SONY, so it was useless in Maine without being able to get the PL-360 to tune LW. I would select it, and I did get 9Kc. steps, but it would not let me tune below 5XX. If I tried to, it brought me to the top of the band, instead of lower. I was able to get into LW with the ETM[?] scan, but that only tuned frequencies with beacons from before, I couldn't tune between those. The display showed 150 KHz., but it would never actually tune LW, once I turned the radio back on.
I readily admit to being very poor at operating digital controls, but I repeatedly followed the manual, and still could not do it. Like I said, I had done it many times at home before, since the LW and AM BCB band on the radio uses the 9 Kc. steps. - FARMERIK

--- In ultralightdx@..., rick robinson wrote:
>
> farmerik wrote:
> > I am pretty disgusted that the PL-360 let me down as far as tuning LW, but I already knew hearing any LW BCB at my inland home was not very likely.
> >
> >
> Hi Farmerik,
>
> Did it literally not tune below 520kHz or was it just deaf? My
> experience with Si4734 based ULRs, and I'm sure the PL-360 follows
> suite, is that the ferrite bar antenna is less than 480uH in inductance
> per the Si specs for tuning MW. There isn't enough capacitance in the
> built-in matching circuitry to tune the stock antenna for LW that's why
> 480uH is the upper limit. To tune LW, you need to get a lot more
> inductance in the loop, 1800uH at least, and/or a lot more capacitance
> than the Si4734 has. The Si4734 spec sheet calls for a step up
> impedance transformer used with a standard 280uH or so MW loop to tune
> LW. Jim, KR1S, wrote up a way to use such a transformer with his "Hoop
> Loop". Another way to tune LW is with a crate loop like the one Kevin
> S. has written up in the list files section. This is an inductively
> coupled loop and should work very well. I have made loops like this in
> the past for LW use and they make a world of difference. This winter
> the big LWBC stations in Europe, north Africa and the middle east should
> show up nightly. They show up here in NC regularly, but I haven't tried
> any ULRs yet for reception. When I do my NDB DXing on LW, some of them
> are actually a pest.
>
> Several years ago I modified a Radio Shack loop antenna with 2 DPDT
> miniature switches, a larger value tuning capacitor, and some mica
> capacitors, to allow the loop to tune LW by adding capacitance in
> parallel with the loop. It works very well and is a nice portable MW/LW
> antenna for use inductively coupled or with the external antenna
> output. I've even used it with desktop receivers and 50 ohm antenna
> inputs. It should work well with my PL-310's external input with the
> "Laurie" MW antenna mod. The current RS/Grundig loop looks like it has
> enough room in it for such a mod although I don't own one. I have seen
> them in RS stores and look like they may have that possibility. The
> only drawback in the availability of the tuning cap. IIRC, I paralleled
> a miniature dual 256pF for a maximum of 512pF. These are somewhat hard
> to find although a seller on ebay last week had 20 of them for about $40US.
>
> Good DXing,
>
> Rick W4DST
>


Re: ULR DX...NEW 250 Watter with Highschool Football!!.........

kevin asato <kc6pob@...>
 

Cool. I remember trying to broadcast high school football with a 10W FM transmitter. We were lucky to have the signal get 1 mile off campus! (formerly/defunct KNHS - North Torrance, CA)

73,
kevin
kc6pob 


--- On Fri, 9/17/10, Robert S.Ross VA3SW wrote:

From: Robert S.Ross VA3SW
Subject: [ultralightdx] ULR DX...NEW 250 Watter with Highschool Football!!.........
To: "Ultralight List" Date: Friday, September 17, 2010, 5:25 PM

 

Hi Guys:

Squeezed a bit of Friday Night Highschool Football DX in tonight and
was rewarded with a NEW STATION for both the OVERALL LOG and the ULR
LOG. A 250 Watter to boot..........

Radio Used.........SONY SRF-T615 ULR BAREFOOT

ULR LOG TOTALS are now.......842 Stations Heard

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

Robert S. Ross
London, Ontario CANADA

***************************************************************
1540 WBTC Urichsville, OHIO Sept/17/10 1937 EDT EE FAIR
Highschool Football in Progress with "Cambridge Bobcats VS the MUSTANGS"
ID several times by Male Sportscaster as "The Best in Highschool
Sports.....NewsTalk/SportsTalk 1540 WBTC". Lots of IDs.
Checked the Web and this was in Parallel to the Live Webcast, which
was a few seconds behind. Happy to catch this one!! In CHIN TORONTO Null.

NEW STATION ULR # 842 Heard 250/5 WATTS!!
ROSS, ONT.
****************************************************************



New Ultralight Log- CFCO 630

John Cereghin <jcereghin@...>
 

While DXing HSFB tonight, I ran across the BEST signal ever heard from
CFCO-630 Chatham ON, absolutely BOOMING into Delaware over WMAL with
"Country 92.9 FM" liners and country mx. Finally get to add them to
the ultralight log on the PL-310 barefoot.

UL station #720.

--
John Cereghin WDX3IAO  KB3LYP
Smyrna, Delaware
My radio page www.pilgrimway.org/dx
The Ultralight Scoreboard  www.pilgrimway.org/ulradio


Re: Failure of East coast LW DX try-FARMERIK

Rik
 

I just couldn't switch the radio to the band which includes LW. I have done this at home hundreds of times. I have transformers for both AM BCB and for LW in a set up much like Jim's, and a couple different coils to try wound for LW. None of those set ups works with the SONY, so it was useless in Maine without being able to get the PL-360 to tune LW. I would select it, and I did get 9Kc. steps, but it would not let me tune below 5XX. If I tried to, it brought me to the top of the band, instead of lower. I was able to get into LW with the ETM[?] scan, but that only tuned frequencies with beacons from before, I couldn't tune between those. The display showed 150 KHz., but it would never actually tune LW, once I turned the radio back on.
I readily admit to being very poor at operating digital controls, but I repeatedly followed the manual, and still could not do it. Like I said, I had done it many times at home before, since the LW and AM BCB band on the radio uses the 9 Kc. steps. - FARMERIK

--- In ultralightdx@..., rick robinson <w4dst@...> wrote:

farmerik wrote:
I am pretty disgusted that the PL-360 let me down as far as tuning LW, but I already knew hearing any LW BCB at my inland home was not very likely.

Hi Farmerik,

Did it literally not tune below 520kHz or was it just deaf? My
experience with Si4734 based ULRs, and I'm sure the PL-360 follows
suite, is that the ferrite bar antenna is less than 480uH in inductance
per the Si specs for tuning MW. There isn't enough capacitance in the
built-in matching circuitry to tune the stock antenna for LW that's why
480uH is the upper limit. To tune LW, you need to get a lot more
inductance in the loop, 1800uH at least, and/or a lot more capacitance
than the Si4734 has. The Si4734 spec sheet calls for a step up
impedance transformer used with a standard 280uH or so MW loop to tune
LW. Jim, KR1S, wrote up a way to use such a transformer with his "Hoop
Loop". Another way to tune LW is with a crate loop like the one Kevin
S. has written up in the list files section. This is an inductively
coupled loop and should work very well. I have made loops like this in
the past for LW use and they make a world of difference. This winter
the big LWBC stations in Europe, north Africa and the middle east should
show up nightly. They show up here in NC regularly, but I haven't tried
any ULRs yet for reception. When I do my NDB DXing on LW, some of them
are actually a pest.

Several years ago I modified a Radio Shack loop antenna with 2 DPDT
miniature switches, a larger value tuning capacitor, and some mica
capacitors, to allow the loop to tune LW by adding capacitance in
parallel with the loop. It works very well and is a nice portable MW/LW
antenna for use inductively coupled or with the external antenna
output. I've even used it with desktop receivers and 50 ohm antenna
inputs. It should work well with my PL-310's external input with the
"Laurie" MW antenna mod. The current RS/Grundig loop looks like it has
enough room in it for such a mod although I don't own one. I have seen
them in RS stores and look like they may have that possibility. The
only drawback in the availability of the tuning cap. IIRC, I paralleled
a miniature dual 256pF for a maximum of 512pF. These are somewhat hard
to find although a seller on ebay last week had 20 of them for about $40US.

Good DXing,

Rick W4DST


ULR DX...NEW 250 Watter with Highschool Football!!.........

robert ross
 

Hi Guys:

Squeezed a bit of Friday Night Highschool Football DX in tonight and was rewarded with a NEW STATION for both the OVERALL LOG and the ULR LOG. A 250 Watter to boot..........

Radio Used.........SONY SRF-T615 ULR BAREFOOT

ULR LOG TOTALS are now.......842 Stations Heard

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

Robert S. Ross
London, Ontario CANADA

***************************************************************
1540 WBTC Urichsville, OHIO Sept/17/10 1937 EDT EE FAIR
Highschool Football in Progress with "Cambridge Bobcats VS the MUSTANGS"
ID several times by Male Sportscaster as "The Best in Highschool
Sports.....NewsTalk/SportsTalk 1540 WBTC". Lots of IDs.
Checked the Web and this was in Parallel to the Live Webcast, which
was a few seconds behind. Happy to catch this one!! In CHIN TORONTO Null.

NEW STATION ULR # 842 Heard 250/5 WATTS!!
ROSS, ONT.
****************************************************************