Date   

Re: More Radio Articles and Designs

Pollock,Raphael E <rpollock@...>
 

I love it--not a URL but otherwise just like the 380 feature-wise but with a considerably longer and more sensitive ferrite bar antenna
 

From: Albert [mailto:aherb62@...]
Sent: Sunday, May 29, 2011 07:11 PM
To: ultralightdx@... <ultralightdx@...>
Subject: [ultralightdx] Re: More Radio Articles and Designs
 
 

Speaking of the PL-390 I was wondering how you like it?

Big Al N0CEK
--- In ultralightdx@..., "just_rtfm" <just_rtfm@...> wrote:
>
>
>
> hi Gary!
>
> i like the 4 kHz filter; offset-tuned by 3 kHz. yes, a slow-AGC is a big help. i agree, the DSP filters are nice. i use my PL-390 as a spotter. i am pretty hooked on designing single tube/transistor radios.
>
> regards,
> phil
>


Re: More Radio Articles and Designs

Albert
 

Speaking of the PL-390 I was wondering how you like it?

Big Al N0CEK

--- In ultralightdx@..., "just_rtfm" <just_rtfm@...> wrote:



hi Gary!

i like the 4 kHz filter; offset-tuned by 3 kHz. yes, a slow-AGC is a big help. i agree, the DSP filters are nice. i use my PL-390 as a spotter. i am pretty hooked on designing single tube/transistor radios.

regards,
phil


Re: More Radio Articles and Designs

just_rtfm
 

hi Gary!

i like the 4 kHz filter; offset-tuned by 3 kHz. yes, a slow-AGC is a big help. i agree, the DSP filters are nice. i use my PL-390 as a spotter. i am pretty hooked on designing single tube/transistor radios.

regards,
phil


Re: More Radio Articles and Designs

Gary Kinsman
 

Phil,

What I meant to say is that the S/N meter doesn't work when offset tuned. The RSSI meter still works in this case.

I tried using offset tuning with my PL-380 last night on SW. For me, the best combination is the 2 kHz filter with a 1 kHz offset. This provides very intelligible audio, and seems to reduce fading distortion a bit. I guess in theory a 2 kHz offset should be better, but it makes the sound too shrill, especially on fades. A 1.5 kHz filter with a 1.5 kHz offset might be ideal, but this is not possible with a stock radio.

A slower AGC would help quite a bit for fading distortion and pumping, but I'm not aware of any small radios that offer selectable AGC speeds.

A nice feature of the DSP filters is that they seem to be perfectly symmetrical. This is usually not the case with physical filters, unless they are very expensive.

Regards,
Gary

--- In ultralightdx@..., "gkinsman1" <gkinsman@...> wrote:

Thanks, Phil.

I especially enjoyed your article "Si4734 Offset Tuning." I'm going to give these techniques a try on my PL-380. It's too bad the signal meter isn't functional when doing offset tuning.

I find that offset tuning is often necessary on my PL-380 to minimize internal-generated hets on MW AM, but I haven't tried it for reduction of selective fading distortion (on MW or SW) yet.

Regards,
Gary


Re: Ferrite loop antenna

STEVE <steve@...>
 

Sorry, I meant the ferrite sleeve antenna.

Steve

--- In ultralightdx@..., "Jerry" <brianalexmiller@...> wrote:


Steve -

Are you referring to the Ferrite Sleeve antenna, or just a regular ferrite loop?

I've fiddled with both and although I haven't managed to construct an FSL to some of the specs that other members have, I have put together a few different ferrite antennas for MW and LW with the 18" ferrite rods from Stormwise.com and I love them.

-Brian

Berkley Michigan


--- In ultralightdx@..., "STEVE" <steve@> wrote:

Has anyone got any further with testing the ferrite loop antenna? I have just rediscovered the original article and wondered if it was worth building.

Steve


Newfoundland Ultralight Radio Trans-Atlantics & Domestics Report May 29

Allen Willie
 

Hello to All,

Propagation from Europe last night was predominately Spanish stations as per logs below. 1 new station was added to the ULR log as BBC Ulster 1341 was either off air for a period of time or it's signal wasn't making it through which would be surprising as it is rock steady here most evenings. A few Middle East stations with big signals however a lot of usual signals from Iran, Syria etc were not making it through , likely due to the high Solar K index at 4 and 5

1107-SPAIN-R. Nacional various 00:07UT/29 Spanish talk, R. Nacional ID //1125
1116-SPAIN-SER Pontevedra 1:00UT/29 news in Spanish (good)
1134-SPAIN-COPE Salamanca 00:07UT/29 woman in Spanish talk //1143
1179-SPAIN-SER Valencia 00:05UT/29 Spanish news
1224-SPAIN-COPE various 00:10UT/29 woman in Spanish
1242-FRANCE-France Info Marrseille-Cabries-Realtor 1:02UT/29 news in French by man
1251-LIBYA-Voice of Africa, Tripoli 00:08UT/29 man in Arabic talk (good)
1260-SPAIN-SER Radio Murcia 1:02UT/29 news in Spanish by man and woman
1269-SPAIN-COPE Ciudad Real 00:05UT/29 Spanish commentary
1305-SPAIN-R. Nacional various 00:05UT/29 news in Spanish (good)
1341-SPAIN-SER R. Leon 00:14UT/29 Spanish teletalk //1485 ***NEW***
1377-FRANCE-France Info Lille-Camphin en Carembault 00:15UT/29 French talk,music (like a local)
1413-SPAIN-R. Nacional, Jaen 00:31UT/29 man w/ Spanish commentary (good)
1431-DJIBOUTI-R. Sawa, Arta 00:04UT/29 R. Sawa ID,Arabic pops (very good)
1449-LIBYA-Voice of Free Libya Meserata 00:04UT/29 Arabic chants (like a local)
1485-SPAIN-SER Santander 00:02UT/29 News in Spanish (very good)
1521-SAUDI ARABIA-BSKSA Duba 00:08UT/29 Arabic talk

Receiver SRF-M37V barefoot

Good DX

Allen Willie
Bristol's Hope, Newfoundland
47:43N 53:11W
http://nldxers.110mb.com


Re: More Radio Articles and Designs

just_rtfm
 

thanks Gary. guessing: the signal meter may look in a specific region for the carrier amplitude. that's how my FFT-based program, PhilSCAN, worked.

regards,
phil


Re: More Radio Articles and Designs

just_rtfm
 

you're very welcome. yes, they are similar. and the ergonomics beat the DE1103. the problem with some radios is the quality control. i was going to get a D96L. but Kchibo seems to lack US sellers.

regards,
phil


Re: Comparing Quality of Radios

keith beesley
 

Hello Keith, from another Keith, 

I don't have hands-on experience with either of those two radios, although I have heard good things about the Grundig. However, I expect you may find WBAP 820 a tough "catch" from Richmond on any radio, barring unusual propagation events, such as magnetic storms, or other stations on 820 being offline for maintenance.
 
Your best bet for hearing stations to the west of you will be to listen around your local sunrise. Good luck!

Sincerely,

Keith Beesley
Seattle, WA

--- On Fri, 5/27/11, skpounds14 <skpounds14@...> wrote:

From: skpounds14
<skpounds14@...>
Subject: [ultralightdx] Comparing Quality of Radios
To: ultralightdx@...
Date: Friday, May 27, 2011, 5:44 PM
















 



 


   
     
     
      I was hoping to get opinions about two radios. I just bought a Grundig G4000A AM/FM/SW Radio - http://amzn.to/jPWQrK for $70. I read many reviews and it seemed to be the best radio in my price range that picked up lots of AM stations which is my main interest. One review that said the 4000a *is* the Grundig Yachtboy YB400 and it looks exactly like the Yachtboy. It has good quality sound and picks up a decent amount of stations, but I can't get 820 Dallas which is 50,000 watts. I'm in Richmond, Va. so I don't know how that affects reception, there are some big mountains in West Virginia and western Virginia.



Then I read the 2009 shootout here (fantastic reviews) and the Tecsun R9012 is rated #1 and AM reception is said to be excellent. I don't know the audio quality of the R9012 speaker. My question is do you all think the R9012 is comparable or better than the Grundig 4000a? Also how is the audio quality of the R9012? I appreciate all comments!



Keith

Richmond, Va.


Re: More Radio Articles and Designs

Gary Kinsman
 

Thanks, Phil.

I especially enjoyed your article "Si4734 Offset Tuning." I'm going to give these techniques a try on my PL-380. It's too bad the signal meter isn't functional when doing offset tuning.

I find that offset tuning is often necessary on my PL-380 to minimize internal-generated hets on MW AM, but I haven't tried it for reduction of selective fading distortion (on MW or SW) yet.

Regards,
Gary

--- In ultralightdx@..., "just_rtfm" <just_rtfm@...> wrote:

Hi guys! Today I added 10 new article. Some may interest the group: a 2011 Portable Buying Guide, DE1103 help sheet, PL390 help sheet, an Si4831 overview, Offset Tuning the Si4734, and Si4734 Digital Filters.

regards,
phil :)

http://home.comcast.net/~phils_radio_designs/


Re: Ferrite loop antenna

Brian Miller
 

Steve -

Are you referring to the Ferrite Sleeve antenna, or just a regular ferrite loop?

I've fiddled with both and although I haven't managed to construct an FSL to some of the specs that other members have, I have put together a few different ferrite antennas for MW and LW with the 18" ferrite rods from Stormwise.com and I love them.

-Brian

Berkley Michigan

--- In ultralightdx@..., "STEVE" <steve@...> wrote:

Has anyone got any further with testing the ferrite loop antenna? I have just rediscovered the original article and wondered if it was worth building.

Steve


Newfoundland Ultralight Radio Trans-Atlantics & Domestics Report May 27-28

Allen Willie
 

Hello to All

Decent propagation last evening considering the higher solar K index reading at 3. Once again some strong signals at near local levels through the later evening.

A few more domestics were added to our Bristol's Hope ULR log and we have updated our personal ULR overall totals on our Newfoundland Ultralight Dxer's Website as of yesterday.

http://nldxers.110mb.com


Also added is new photo of our residence taken from the beach here in Bristol's Hope. Click the link below once to view an enlarged panoramic view and then once again for a larger view. Our "DX Inn" is on the far right . Everyone is welcome, come visit us !!

http://nldxers.110mb.com/beach2.jpg

Last nights logs

680-WRKO-Boston,Mass 2:55UT/28 talk program,ID
1089-ENGLAND-Talksport Radio,Brookman's Park 00:29UT/28 talk about Football
1134-IRAN-IRIB1 Bojnord 1:17UT/28 Persian music & talk
1160-BERMUDA-VSB3 Hamilton 3:00UT/28 BBC News
1179-ROMANIA-Romania Actualitati Galbeni-Bacau 23:55UT/27 Romanian talk Beatles song "Love Me Do" (Very strong)
1251-LIBYA-Voice of Africa Tripoli 23:56UT/27 Lively Arabic speech
1278-IRAN-IRIB1 Kermanshah 23:56UT/27 Chants
1296-ENGLAND-Radio XL 1296 AM Langley Mill 2:19UT/28 Indian lang prgrm (Good)
1380-CKPC-Brantford,Ontario 3:30UT/28 "News Country AM-13-80" ID,country music
1430-CHKT-Toronto,Ontario 4:10UT/28 Ethnic prgrming,ID promos
1440-LUXEMBOURG-KBS Korea Relay Marnach 23:56UT/27 Close of English program
1449-LIBYA-Voice of Free Libya, Meserata 3:34UT/28 Chants
1460-CJOY-Guelph Ontario 4:00UT/28 Oldies songs,Legal ID
1530-SAO TOME-VOA Relay Pinheira 3:03UT/28 VOA News,ID in English
1540-WDCD-Albany,New York 1:47UT/28 ID,religious talk
1548-KUWAIT-R. Sawa, Kuwait City 23:59UT/27 Arabic songs (very good)
1550-CBE-Windsor,Ontario 4:02UT/28 CBC News then weather various Ontario locations (very good)
1610-CJWI-Montreal,Quebec 4:01UT/28 French talk

Receivers: SRF-M37V,SRF-39FP ,SRF-59 barefoot

Good DX

Allen Willie & Dianne Froude
Bristol's Hope, Newfoundland
47:43N 53:11W
http://nldxers.110mb.com


Re: More Radio Articles and Designs

Neil Goldstein
 

Phil,

Thanks for the great article! (2011 Buying Guide)

Do you find that the older Grundig G5/Eton E5 pretty much performs the same as the DE1103? I still have my G5, and was wondering where it fits in your tests. Also, have you ever tried out a KCHIBO D96L ? Thanks!


Ferrite loop antenna

STEVE <steve@...>
 

Has anyone got any further with testing the ferrite loop antenna? I have just rediscovered the original article and wondered if it was worth building.

Steve


More Radio Articles and Designs

just_rtfm
 

Hi guys! Today I added 10 new article. Some may interest the group: a 2011 Portable Buying Guide, DE1103 help sheet, PL390 help sheet, an Si4831 overview, Offset Tuning the Si4734, and Si4734 Digital Filters.

regards,
phil :)

http://home.comcast.net/~phils_radio_designs/

Shortwave Buying Guides
==========================
2011 Shortwave Guide NEW!
2008 Shortwave Radio Picks
2006 Radio Buying Guide
2005 Portable Guide
2005 Tabletop Guide


Block Diagrams
====================
DE1103 Block Diagram
DE1102 Block Diagram
DE1101 Block Diagram
KA2100 Block Diagram


"Must-Read" Article
===========================
Tuning Tricks Challenge SAM


Reviews and Comparisons
=========================
KA2100 Superior by Design
DE1102 Mini-Cookbook
DE1103 Cheat Sheet NEW!
PL390 Cheat Sheet NEW!
Eton E1 SWL Tips
FRG100 SWL Tips
R8B versus R75
E1 versus Sat800
E1 Flaws List
S10MK2 versus R75
English Broadcasts Statistics
Graphs JPEG Eng1 Eng2 NEW!
DE108 Mini-Radio
Scanning Speed War


ICOM R75 Related
=============================
R75 Cookbook
Fidelity Increase Mod
Fidelity Increase Mod Notes
Cheap AM Filter Mod
ECSS Volume Mod
Voice Synthesizer Volume
Display Frequency Calibration
Pete's MW Attenuator Mod
Soldering Lessons
Printable Logsheet
PhilSCAN HISTORY


Hacking the Si4734
=============================
Si4734 Hardware Guide
Si4734 Software Guide
Si4734 Shortwave Antennas
Si4734 KK-D48L
Si4734 Homebrew Radio
Si4831 Mechanical Tuning NEW!
Si4734 Offset Tuning NEW!
Si4734 Digital Filters NEW!


Single Triode Receivers
===============================
Angelodyne
Regerative Plate Detector
Calculate Transconductance NEW!
Hellenedyne
Hellenedyne Addendum
Hellenedyne II


Single Transistor Receivers
===========================
Dee/Mitch-dyne
Globe Patrol Junior NEW!


Sony Walkman Mods
====================
S10MK2 to Shortwave
SRF59 to Shortwave
SRF59 Handbook NEW!
SRF59 Audio 12MB WAV


Pentode Superregenerator
============================
QRP Tube Superregen UPDATED!


Vacuum Tube Charts
===============================
Charts JPEG Rare QRP Space NEW!


Comparing Quality of Radios

skpounds14 <skpounds14@...>
 

I was hoping to get opinions about two radios. I just bought a Grundig G4000A AM/FM/SW Radio - http://amzn.to/jPWQrK for $70. I read many reviews and it seemed to be the best radio in my price range that picked up lots of AM stations which is my main interest. One review that said the 4000a *is* the Grundig Yachtboy YB400 and it looks exactly like the Yachtboy. It has good quality sound and picks up a decent amount of stations, but I can't get 820 Dallas which is 50,000 watts. I'm in Richmond, Va. so I don't know how that affects reception, there are some big mountains in West Virginia and western Virginia.

Then I read the 2009 shootout here (fantastic reviews) and the Tecsun R9012 is rated #1 and AM reception is said to be excellent. I don't know the audio quality of the R9012 speaker. My question is do you all think the R9012 is comparable or better than the Grundig 4000a? Also how is the audio quality of the R9012? I appreciate all comments!


Keith
Richmond, Va.


I Needed Another Radio Like a Hole in the Head...

John Cereghin <jcereghin@...>
 

They say that we preachers collect Bibles (I have probably 30 of them)
and DXers collect radios. UL DXers collect UL radios...

For Father's Day, I bought myself a Grundig G-8 at Radio Shack. My
PL-300WT (Tecsun's version of the G-8) is probably the best ULR for FM
DX so you can't have too many during this time of the year. I like
the G-8 because of its rubberized finish, which is better than the
metal finish of its cousin, the PL-300WT. I hope I get to put it
through its paces during the next Es event...

The only question is if my wife is going to let me play with it yet,
or if I have to wait until Father's Day! "But honey, I need to make
sure it works or if I have to return it..."

--
John Cereghin WDX3IAO  KB3LYP
Smyrna, Delaware
My radio page http://wdx3iao.wordpress.com/ (please note NEW site!)
The Ultralight Scoreboard  www.pilgrimway.org/ulradio


Re: Tecsun PL-310 and Tecsun PL-380 for sale!

cadcoast <jm392c@...>
 

I've got a 5-month old 310 if you still want one. E-mail me directly if you do.

Jim

--- In ultralightdx@..., "Jeff" <jeff@...> wrote:

I will buy your Tecsun PL-310 if Keith does not.
Jeff

--- In ultralightdx@..., "AlfredR" <rugelj2002@> wrote:

I have a Tecsun PL-310 and a Tecsun PL-380 for sale, 2 months old purchased from Hong Kong, used perhaps one hour each. Original factory cartons and all factory enclosures included, like new. I have four other SW radio's and really don't have a need for these! I will sell for $25.00 each plus $4.00 shipping to lower 48 states. If you want both shipping is $5.00. Satisfaction guaranteed or money back. My personal Email is......rugelj2002@ Al Rugel


Re: Audiophile modifications for DSP Ultralights?

Rik
 

I use efficient speakers on my DSP radios. Most will drive one [old] Avery Fisher book shelf speaker across the R+L channels for mono. The CR-1100 will drive a pair of them for stereo, or an 8 inch Altec, EV or Bogen speaker PA/Music speaker. The CR-1100 has a stereo line output for matching an amp too. - FARMERIK

--- In ultralightdx@..., "dhsatyadhana" <dhsatyadhana@...> wrote:

Hi Zim:

Good idea! Fortunately, most of the manuals are in the Files section. I see the PL-606 specifies a 32 ohm headphone, while the PL-310 says 8-32 ohms. This seems to confirm that the audio sections really are different, such that I would hear such a difference in audio quality. The PL-606 has a rated 230 mW through the speaker, while the PL-310 claims 350 mW, again quite a difference.

The Grados I have are 32 ohm, so I am probably OK there. I also use a headphone volume control from Radio Shack much of the time, which adds a few more ohms (from the radio's perspective, anyway).

Thanks - Kevin S
Bainbridge Island, WA


--- In ultralightdx@..., "Graeme Zimmer" <gzimmer@> wrote:

Many of these little radios are intended to be used with relatively high impedance headphones (60 Ohm or so)

Reduced bass can occur with low-Z phones due to the relatively small output capacitors.

Try some higher Impedance phones and see if it cures the problem.

.............. Zim


Newfoundland Ultralight Radio Trans-Atlantics & Domestics Report May 24-May 27

Allen Willie
 

Hello To All

Trans-Atlantic propagation is still alive and well from Bristol's Hope even though it is much later in the evening arriving with the longer daylight hours . Finally logged a new country for the ULR logbook as well. #79 on ULR

Included is another link to a video receiving France Info on 1377 khz using the SRF-59 barefoot at our new location.

http://www.youtube.com/watch?v=e1clLcrXHCk


Here are a few logs from the past few days

810-SCOTLAND-BBC Scotland Burghead 1:17UT/27 music by ELO and Olvia Newton John, talk (good)
910-CUBA-Radio Reloj Bolondron 7:10UT/27 Spanish commentary, sound effects
990-SPAIN-COPE various 2:00UT/24 woman w/ news in Spanish
999-SPAIN-COPE Madrid 2:02UT/24 News in Spanish
1026-IRAN-IRIB1 Tabriz 00:25UT/26 Iranian music,Persian talk (good) //1062,1278
1035-PORTUGAL-Star FM Belmonte 23:40UT/26 song-"Tell Laura I Love Her "
1044-SPAIN-SER San Sebastian, Monte Igueldo 1:21UT/24 woman in Spanish teletalk
1070-Unidentified 7:23UT/27 Latin music,Spanish talk
1071-SYRIA-Al Nur Radio,Tartus Amrit 00:33UT/26 News in Arabic
1080-SPAIN - SER various 1:22UT/24 Spanish talk & music //1116
1089-ENGLAND-Talksport Radio, Brookman's Park 1:19UT/24 talk about Society without government //1053 (Like a Local)
1089-ALGERIA-Alger Chaine 1, Adrar 23:41UT/26 Arabic music & talk
1098-SLOVAKIA-SRO5 Nitra-Jarok 23:15UT/26 man in Slovak language (strong at peaks then mixing with Spain later) ***NEW COUNTRY*** COUNTRY # 79 on ULR
1160-BERMUDA-VSB3 Hamilton, 7:30UT/27 BBC News
1170-SLOVENIA-R. Slovenija Intl, Beli Kriz 1:20UT/24 Slovenian songs & talk
1188-IRAN-R. Payam Tehran, 00:25UT/26 string instrument music & talk
1250-WGAM-Manchester,New Hampshire 7:14UT/27 ESPN Radio, NBA Talk
1251-LIBYA-Voice of Africa , Tripoli 1:22UT/24 man in Arabic talk (Like a Local)
1305-SPAIN-R. Nacional various 23:23UT/24 two men in Spanish talk
1314-SPAIN-R. Nacional,Cuenca 1:35UT/24 Spanish teletalk
1323-IRAN-IRIB1 Jolfa 1:15UT/27 man in Persian, ment. Iran (good)
1341-NORTHERN IRELAND-BBC R. Ulster Lisnagarvey 1:22UT/24 talk about terrorists orgs
1377-FRANCE-France Info Lille-Camphin-en-Carembault, 1:23UT/24 French talk & music (Like A Local)
1386-SPAIN-Euskadi Irratia, Bilbao 1:24UT/24 man w/ Speech in Basque lang
1413-SPAIN-R. Nacional Jaen 1:35UT/24 same as below // 1485
1422-ALGERIA-R. Culture Alger 00:02UT/27 news in French
1440-LUXEMBOURG-KBS Korea Relay, Marnach 23:21UT/26 talk about new movie in English
1485-SPAIN-SER various, 1:35UT/24 woman w/ Spanish talk & music (good)
1503-IRAN-IRIB1 Bushehr, 00:31UT/26 Chants & music
1521-SAUDI ARABIA-BSKSA Duba 1:25UT/24 Arabic talk & chants (Like A Local)
1530-SAO TOME-VOA Relay Pinheira 3:49UT/26 VOA News in English
1530-ROMANIA-Romania Actualitati, various 00:14UT/26 Romanian songs & talk //1179
1557-FRANCE-France Info, Nice-Fontbonne 00:11UT/26 operetic music
1575-UNITED ARAB EMIRATES-R. Farda Al Dhabbaya 00:10UT/26 ID,Arabic talk & music
1580-Unidentified 7:40UT/27 woman in Spanish lengthy talk then into Religious type music

Receivers: SRF-M37V barefoot

Allen Willie
Bristol's Hope,Newfoundland
47:43N 53:11W
http://nldxers.110mb.com

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