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Total 33 documents matching your query.

1. [AMPS] Relays hanging up (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 11 Aug 2000 18:03:23 -0400; I've never seen a DC relay hang up from residual magnetism. The reason is the core material is intentionally a type that does not retain magnetism. If it is magnetized, it will simply magnetize again; /archives//html/Amps/2000-08/msg00214.html (8,296 bytes)
2. [AMPS] Relays hanging up (score: 1): Author: 2@vc.net (measures); Date: Fri, 11 Aug 2000 19:53:15 -0700; I have. - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com P; /archives//html/Amps/2000-08/msg00218.html (8,018 bytes)
3. [AMPS] Relays hanging up (score: 1): Author: 2@vc.net (measures); Date: Fri, 11 Aug 2000 20:21:15 -0700; flow? The return spring is offset so that as the contacts close, a wiping action takes place. later, Steve - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.c; /archives//html/Amps/2000-08/msg00220.html (8,898 bytes)
4. SV: [AMPS] Relays hanging up (score: 1): Author: sm5ki@algonet.se (sm5ki); Date: Sat, 12 Aug 2000 07:21:04 +0200; Rich: Why do I get all your messages twice? Hanging up,hi? de Hans -- -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesti; /archives//html/Amps/2000-08/msg00221.html (9,888 bytes)
5. [AMPS] Relays hanging up (score: 1): Author: oz5tg@post2.tele.dk (oz5tg); Date: Sat, 12 Aug 2000 10:38:27 +0200; I was working at a telephonecompany once. We had a rubberhammer that was used to hit the relayracks with when we got too many complains about crosscoupled phonelines. When we did that we could hear v; /archives//html/Amps/2000-08/msg00222.html (9,378 bytes)
6. [AMPS] Relays hanging up (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 12 Aug 2000 06:58:14 -0400; Different contact materials have different hardness and even shapes. High current contacts are harder materials with wider contact areas, while low current contacts are softer materials with smaller; /archives//html/Amps/2000-08/msg00224.html (9,944 bytes)
7. [AMPS] Relays hanging up (score: 1): Author: n4zr@contesting.com (Pete Smith); Date: Sat, 12 Aug 2000 11:25:25 +0000; It puzzles me that we don't seem more of these problems with remote antenna switches, where you're receiving through contacts that must also be able to handle transmitting power. 73, Pete Smith N4ZR; /archives//html/Amps/2000-08/msg00225.html (9,362 bytes)
8. [AMPS] Relays hanging up (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 12 Aug 2000 08:10:47 -0400; That's because when you do transmit, you "clean" the contacts. The worse case for an amplifier is when you never transmit through the receive contacts. 73, Tom W8JI w8ji@contesting.com -- FAQ on WWW; /archives//html/Amps/2000-08/msg00226.html (9,248 bytes)
9. [AMPS] Relays hanging up (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 12 Aug 2000 08:14:20 -0400; Mechanical non-mercury wetted relays in a telephone switching system? What a system. No wonder the materials in the relay magnetic parts were poor! 73, Tom W8JI w8ji@contesting.com -- FAQ on WWW: ht; /archives//html/Amps/2000-08/msg00227.html (8,773 bytes)
10. [AMPS] Relays hanging up (score: 1): Author: N4NT@chartertn.net (Michael O. Hyder); Date: Sat, 12 Aug 2000 08:46:05 -0400; With digital switching, you need a bigger hammer. Regards, Mike N4NT@chartertn.net -- Original Message -- From: "oz5tg" <oz5tg@post2.tele.dk> To: "measures" <2@vc.net>; "Tom Rauch" <W8JI@contesting.c; /archives//html/Amps/2000-08/msg00229.html (9,298 bytes)
11. [AMPS] Relays hanging up (score: 1): Author: aa4hp@titustek.com (Hank Phillips); Date: Sat, 12 Aug 2000 09:03:00 -0400; When would you want to do that? -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting; /archives//html/Amps/2000-08/msg00230.html (9,669 bytes)
12. [AMPS] Relays hanging up (score: 1): Author: 2@vc.net (measures); Date: Sat, 12 Aug 2000 06:09:49 -0700; ? For high-current RF applications, vacuum relays use copper-contacts. ? Open frame relays are not ideal to use in conjunction with modern radios because the switching times are so slow that hotswit; /archives//html/Amps/2000-08/msg00231.html (10,301 bytes)
13. SV: [AMPS] Relays hanging up (score: 1): Author: 2@vc.net (measures); Date: Sat, 12 Aug 2000 06:09:51 -0700; I typically send my replies to the AMPS mailing-list and to who is on the original recipient list. If you were one of the orig. recipients and you are on the list, you receive two copies. // On this; /archives//html/Amps/2000-08/msg00232.html (8,948 bytes)
14. [AMPS] Relays hanging up (score: 1): Author: 2@vc.net (measures); Date: Sat, 12 Aug 2000 06:09:55 -0700; ? Are you saying that silver-oxide is not a conductor? - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Adminis; /archives//html/Amps/2000-08/msg00234.html (9,613 bytes)
15. [AMPS] Relays hanging up (score: 1): Author: 2@vc.net (measures); Date: Sat, 12 Aug 2000 06:16:50 -0700; ? ''poor''? All relay armatures contain iron. Hello. If the spring isn't strong enough, it can hang up. - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/; /archives//html/Amps/2000-08/msg00235.html (9,306 bytes)
16. [AMPS] Relays hanging up (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 12 Aug 2000 09:28:52 -0400; Well he "says" it was residual magnetism. I guess we have to believe somehow he knows that's what it was, and not weak springs or other mechanical problems. That's right. With a weak enough spring,; /archives//html/Amps/2000-08/msg00236.html (10,078 bytes)
17. [AMPS] Relays hanging up (score: 1): Author: 2@vc.net (measures); Date: Sat, 12 Aug 2000 06:48:17 -0700; Because the relay stopped hanging up when I reversed polarity. The relay did not hang up after I reversed the magnetic field. All types of iron can be magnetized. The contacts were not welded, Tom.; /archives//html/Amps/2000-08/msg00237.html (10,453 bytes)
18. [AMPS] Relays hanging up (score: 1): Author: k7fm@teleport.com (Lamb); Date: Sat, 12 Aug 2000 07:06:53 -0700; The TS-430S sometimes suffered from intermittent receive conditions, due to the failure of the contacts in the receive bandpass filter. The recommended cure was to run a small amount of dc through th; /archives//html/Amps/2000-08/msg00238.html (9,965 bytes)
19. [AMPS] Relays hanging up (score: 1): Author: falk@investusa.net (Kenneth C. Falk, CCIM); Date: Sat, 12 Aug 2000 10:21:05 -0400; Colin, My receive problem was due to the T/R relay in my HF-2500. Burnished the contacts with some paper, and everything is now fine. This is a 12VDC, DPDT, open-frame relay. What specific relay do y; /archives//html/Amps/2000-08/msg00239.html (12,185 bytes)
20. [AMPS] Relays hanging up (score: 1): Author: Eric Dobrowansky" <kk2ed@adelphia.net (Eric Dobrowansky); Date: Sat, 12 Aug 2000 11:55:46 -0400; Per a service bulletin, this was Kenwood's solution to a well-known relay problem in the TS430S transceiver. into -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Ad; /archives//html/Amps/2000-08/msg00241.html (8,700 bytes)

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