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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TRLog\]\s+Switch\s+box\s*$/: 12 ]

Total 12 documents matching your query.

1. [TRLog] switch box (score: 1): Author: lu2brg@cvtci.com.ar (Ernesto Grueneberg LU2BRG); Date: Sat, 17 Jan 1998 22:01:52 -0300; This is a multi-part message in MIME format. --=_NextPart_000_003F_01BD2393.84D295C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello group! has been a; /archives//html/TRLog/1998-01/msg00066.html (9,199 bytes)
2. [TRLog] switch box (score: 1): Author: lu2brg@cvtci.com.ar (Ernesto Grueneberg LU2BRG); Date: Tue, 20 Jan 1998 20:12:56 -0300; Well I have received ZERO answers, so nothing to share :-( Ernesto Grueneberg LU2BRG (ex LU6BEG) Other calls used: LU6BEG/PY, ZP5/LU6BEG, ZP5/LU2BRG, L3CW, ZP5XF, LW2DFM, LU4FM, LP4H, L70FM, LP4F, LT; /archives//html/TRLog/1998-01/msg00084.html (7,988 bytes)
3. [TRLog] Switch box (score: 1): Author: n6tr@teleport.com (Tree N6TR); Date: Tue, 4 Nov 1997 10:43:41 -0800 (PST); I found a design improvement to make to my switch box (at W5WMU). I was having problems with the PTT and CW signals being driven sufficiently for the transistors to turn on. When I found the problem; /archives//html/TRLog/1997-11/msg00052.html (7,148 bytes)
4. [TRLog] Switch box (score: 1): Author: becker@SPRINTMAIL.COM (Tony and Celia Becker); Date: Fri, 07 Nov 1997 08:40:53 -0700; Hi All! It is important to realize that the generic PC parallel port pin is designed to drive a printer input impedance of typically >100 KOhms and <10 pF at data rates of a few hundred KHz. We we mu; /archives//html/TRLog/1997-11/msg00115.html (8,491 bytes)
5. [TRLog] Switch box (score: 1): Author: desmith@Telalink.Net (Doug Smith); Date: Sat, 8 Nov 1997 20:02:18 -0600 (CST); I've been thinking of working on a box like this myself, hopefully incorporating a band decoder too.. What's the coding for the band data port? I assume it's BCD, but the cross-coding to bands isn't; /archives//html/TRLog/1997-11/msg00128.html (7,983 bytes)
6. [TRLog] Switch box (score: 1): Author: geoiii@bga.com (george fremin iii); Date: Sun, 9 Nov 1997 00:18:56 -0600 (CST); Yes it is BCD - you can use a BCD-to-Decimal decoder driver such as a 74145 or similar to decode it. I did this this evening now if I can figure out how to use the output of the decoder to drive some; /archives//html/TRLog/1997-11/msg00130.html (7,624 bytes)
7. [TRLog] Switch box (score: 1): Author: w2vjn@rosenet.net (George Cutsogeorge); Date: Sun, 9 Nov 1997 07:02:40 -0800; In the Top Ten Devices band decoders, we use the CMOS version BCD to decimal chip, the CD4028. It directly drives a ULN2003 which can drive a lot of relays. The relays are connected to +12 and the UL; /archives//html/TRLog/1997-11/msg00131.html (9,161 bytes)
8. [TRLog] Switch box (score: 1): Author: jukka.tamminen@koskisen.fi (Jukka Tamminen); Date: Wed, 24 Sep 1997 08:38:00 +0300; This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. -- =_NextPart_000_01BCC8C5.2B16FA90 Content-Type: text/plain Th; /archives//html/TRLog/1997-09/msg00104.html (10,259 bytes)
9. [TRLog] Switch box (score: 1): Author: n6tr@teleport.com (Larry Tyree); Date: Tue, 5 Aug 1997 08:54:29 -0700 (PDT); For those of you who I have already bored with the details of my switchbox, I apologize. I have been building a two radio switch box with the following features: 1. Computer interference for two Kenw; /archives//html/TRLog/1997-08/msg00026.html (9,843 bytes)
10. [TRLog] Switch box (score: 1): Author: otterstad@inet.uni-c.dk (OZ8RO); Date: Wed, 6 Aug 1997 06:47:52 +0200; I trust you used MEC switches ! 73 Rag -- radio -- FAQ on WWW: http://www.contesting.com/trlogfaq.html Submissions: trlog@contesting.com Administrative requests: trlog-REQUEST@contesting.com Problems; /archives//html/TRLog/1997-08/msg00028.html (11,391 bytes)
11. [TRLog] Switch box (score: 1): Author: n6tr@teleport.com (Tree N6TR); Date: Fri, 22 Aug 1997 09:12:18 -0700 (PDT); Several people have sent me mail about "doing a switch box". Some even indicated that they would go develop one, but I have very little visibility of what they are really doing. This message is inten; /archives//html/TRLog/1997-08/msg00062.html (8,251 bytes)
12. [TRLog] Switch box (score: 1): Author: otterstad@inet.uni-c.dk (OZ8RO); Date: Fri, 22 Aug 1997 21:47:45 +0200; I will be glad to contribute pushbutton switches for any project which will make TR more useful. 73 Rag OZ8RO also LA5HE -- -- FAQ on WWW: http://www.contesting.com/trlogfaq.html Submissions: trlog@c; /archives//html/TRLog/1997-08/msg00066.html (9,535 bytes)

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