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Total 198 documents matching your query.

1. LF: QSL-cards LX/PA6Z (score: 1)
Author: "Dick" <>
Date: Wed, 21 Nov 2007 21:30:31 +0100
Hello all, For those who worked me last year as LX/PA6Z on 137kHz: We have not forgotten you! Marcel, PA9M, our QSL manager QSP-ed all cards to me personally, problem however is that I still have to
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00433.html (8,936 bytes)

2. LF: LX/PA6Z QSL's out now! (score: 1)
Author: "Dick" <>
Date: Tue, 18 Dec 2007 21:27:28 +0100
Hello all, After a long delay finally the LX/PA6Z QSL's are ready, and will be mailed/send by the buro tomorrow. Also all QSL's for 136kHz QSO's with PA4VHF will be send via the buro. Now I'am very b
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-12/msg00214.html (8,693 bytes)

3. LF: Schematics powersupplies 50-100Volt wanted (score: 1)
Author: "Dick" <>
Date: Sat, 31 Jan 2004 22:52:55 +0100
Hello all, after 2 days of searching the internet and a lot of magazines here, I still haven't found any (simple) design for a powersupply in the 50-100V range. I want to run something with an fixed
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00079.html (10,822 bytes)

4. LF: What NTC to use with an transformer (score: 1)
Author: "Dick" <>
Date: Fri, 30 Jan 2004 22:55:57 +0100
Hello all, I am starting with an powersupply in order to have something to feed an amp. I have some nice transformers here, one of them being 50V/1000VA. To limit the current when switching on such a
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00080.html (9,980 bytes)

5. LF: my 137kHz project...a little more signal now........ (score: 1)
Author: "Dick" <>
Date: Mon, 26 Jan 2004 21:35:21 +0100
Well, I managed to get a nice 12Vtt square wave on 137kHz + all harmonics, and used this to drive a single IRF530, just to see what happens. Had to use a resistor to crank down the current, as my pow
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00081.html (10,711 bytes)

6. LF: Thanks for usefull info! (score: 1)
Author: "Dick" <>
Date: Sat, 24 Jan 2004 11:19:22 +0100
Hello, and once again thanks for the usefull info given by some of you. Johan for his references to other MOSFET drivers, Alan and recently James about the re-use of old line-ouput cores. Old compute
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00082.html (11,011 bytes)

7. LF: interesting sites for LF too...... (score: 1)
Author: "Dick" <>
Date: Sat, 24 Jan 2004 00:04:06 +0100
Hello , For those who didn't know...there is a community also working on frequencies around 136kHz............. I don't know how I found them, but must have been during one of my (google) searches ar
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00083.html (11,977 bytes)

8. LF: my 137 kHz project...... (score: 1)
Author: "Dick" <>
Date: Fri, 23 Jan 2004 20:40:06 +0100
Well, despite first negative results I now seems to get some positive results......... Thanks to all here for the "physical support" , it keeps me involved......... For Mal, and others,...I just firs
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00084.html (12,974 bytes)

9. LF: more on my 'nasty'136kHz project............. (score: 1)
Author: "Dick" <>
Date: Thu, 22 Jan 2004 23:57:18 +0100
Hello all, yeah, well, once being amateur, means mostly always an ham, hihi. and that means...............exact........I just can't give up............. so, had an closer look at the 'remains' sofar.
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00085.html (15,027 bytes)

10. LF: 136kHz project cancelled (score: 1)
Author: "Dick" <>
Date: Thu, 22 Jan 2004 20:44:44 +0100
Hello all, Sorry to say but for the moment I decided to stop my building activeties for the 136kHz transmitter. Right from the start I faced only problems in getting things working, and I just do not
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00086.html (12,874 bytes)

11. LF: TDA2030 amplifier by OM2TW (score: 1)
Author: "Dick" <>
Date: Wed, 21 Jan 2004 20:35:29 +0100
Hello all, As I haven't OM2TW's emailadress right now, I'll ask here. I found an pdf.drawing of the TDA2030 amplifier giving 5Watts or so on 136kHz. however, at hte output stage there are two coils L
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00087.html (9,851 bytes)

12. LF: TC44/MUR1660 question...thanks..... (score: 1)
Author: "Dick" <>
Date: Tue, 20 Jan 2004 23:17:26 +0100
Thanks to all who replied to my question. Sorry to see that these FET-drivers are not (yet) a widely available product. Marek's suggestion of using an ICL7667 isn't an bad idea at all. I know the per
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00088.html (11,442 bytes)

13. LF: interference due to 136kHz transmissions (score: 1)
Author: "Dick" <>
Date: Wed, 14 Jan 2004 23:40:19 +0100
Hello all, First of all thanks for answering my question; however I actually didn't meant direct interference on reception (radio/TV) but RFI. I mean the CW-signal on 136kHz detected in various audio
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00089.html (10,198 bytes)

14. LF: Thanks for calling PI4ZI on 160m..... (score: 1)
Author: "Dick" <>
Date: Sun, 15 Feb 2004 19:52:05 +0100
Hello, and thanks to all who called me last night on 160m operating PI4ZI. Had great fun with just 400Watt into an full-size delta loop. Excellent signals. pictures at : http://www.qsl.net/pi4zi/ Loo
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-02/msg00066.html (8,330 bytes)

15. LF: QRV 160m, sri no 137kHz yet....... (score: 1)
Author: "Dick" <>
Date: Thu, 12 Feb 2004 22:54:10 +0100
Hello all, A bit off topic, but I just want to inform you that I will be the operator of PI4ZI on 160m during this weekends PACC contest. We will try to put up my full-size delta loop for 160m again.
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-02/msg00067.html (8,098 bytes)

16. LF: my 136kHz project status (score: 1)
Author: "Dick" <>
Date: Tue, 16 Mar 2004 23:23:21 +0100
Hello all, Well, I'm still there in the list and just want to inform you about the status of my 136kHz station project. Things are going very slowly. I have been busy dismanteling quite a large numbe
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-03/msg00075.html (11,754 bytes)

17. LF: 136kHz CW-skeds/activety periods (score: 1)
Author: "Dick" <>
Date: Thu, 18 Mar 2004 21:54:51 +0100
Although I am not QRV yet, I would certainly glad to see a kind of CW activety period somewhere during weekends or so. Another, different question, I wonder how situation is during summertime. Of cou
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-03/msg00105.html (9,817 bytes)

18. LF: component replacements (score: 1)
Author: "Dick" <>
Date: Sat, 20 Mar 2004 19:42:17 +0100
Hello all, I'm not an expert in all the special types of components around, so therefore some questions here. In several transmitter designs I found a skottky diode MBR150 in the gates of the FET's.
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-03/msg00127.html (11,042 bytes)

19. LF: activety/stationlist (score: 1)
Author: "Dick" <>
Date: Sun, 21 Mar 2004 11:07:21 +0100
First of all congrats to Ed ans his group, as well as the ZL's for their wonderfull QSO! Reading Ed's message I was a bit surprised to see that they where running 100Watt 'only'. What interests me is
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-03/msg00133.html (10,318 bytes)

20. LF: Re: Hello! (score: 1)
Author: "Dick" <>
Date: Sun, 21 Mar 2004 19:33:07 +0100
Welcome Jeff, Isn't that the QTH off F6IFR contestgroup on VHF-UHF-SHF?????? 73 Dick, pa4vhf (ex pa3fjy-jo32eh)
/rsgb_lf_group-archives/html/rsgb_lf_group/2004-03/msg00140.html (8,164 bytes)


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