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1. [Amps] RE: Problems with Heath SB-220 (score: 1): Author: kapyd at juno.com (JULIO C ROSA); Date: Wed Jan 22 01:57:59 2003; Hello Everybody! I want to thank everyone who kindly replied to my question as to how to connect the Heath SB-220 to my TS-930 and for the additional advise. I also want to thank Pete- N4ZR for sugge; /archives//html/Amps/2003-01/msg00180.html (8,063 bytes)
2. [Amps] RE: Problems with Heath SB-220 (score: 1): Author: dhearn at ix.netcom.com (Dan); Date: Wed Jan 22 17:08:08 2003; Hi Julio: A friend KD7OY just had exactly the same problem. We found that the relay contacts which short the amp T/R line were welded together.holding the amp in the xmit mode even when he switched t; /archives//html/Amps/2003-01/msg00183.html (10,014 bytes)
3. [Amps] RE: Problems with Heath SB-220 (score: 1): Author: n4zr at contesting.com (Pete Smith); Date: Wed Jan 22 17:25:24 2003; This is good advice -- there is such a signal and it leads the production of RF by a few milliseconds -- I forget the exact figure but K9MA told me about it. I use +12V to switch an FET that switches; /archives//html/Amps/2003-01/msg00184.html (7,369 bytes)
4. [Amps] RE: Problems with Heath SB-220 (score: 1): Author: Kim.Elmore at noaa.gov (Kim Elmore); Date: Wed Jan 22 17:45:50 2003; If I recall, it's pin 7 of the ACC plug, but it's in the manual, regardless. Kim Elmore, N5OP Kim Elmore, Ph.D. University of Oklahoma Cooperative Institute for Mesoscale Meteorological Studies "All; /archives//html/Amps/2003-01/msg00185.html (8,287 bytes)
5. [Amps] RE: Problems with Heath SB-220 (score: 1): Author: G3SEK at ifwtech.co.uk (Ian White, G3SEK); Date: Thu Jan 23 04:12:55 2003; Agreed... but so far we have been focusing on switching capacity. The other issue is the effect on T/R timing and RF arcing in the amp's antenna relay. The open-frame relays on most older amps are to; /archives//html/Amps/2003-01/msg00187.html (9,609 bytes)

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