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1. [Amps] Alpha 87a Fault 9 (score: 1): Author: George Fremin III <geoiii@kkn.net>; Date: Mon, 29 Oct 2018 15:44:45 +0000; I have an Alpha 87a that is presenting the following symptoms. When switching from standby to operate I get a reduction/loss of receiver singals. When the key line is grounded the amp faults with cod; /archives//html/Amps/2018-10/msg00105.html (7,420 bytes)
2. Re: [Amps] Alpha 87a Fault 9 (score: 1): Author: George Fremin III <geoiii@kkn.net>; Date: Mon, 29 Oct 2018 17:36:59 +0000; This failed during the contest this weekend. And I did not notice what code it might have failed at - 9 or something else. I just remembered that you can see some number of the most recent fault code; /archives//html/Amps/2018-10/msg00107.html (6,940 bytes)
3. Re: [Amps] Alpha 87a Fault 9 (score: 1): Author: "Dick Green WC1M" <wc1m73@gmail.com>; Date: Mon, 29 Oct 2018 15:00:06 -0400; If the bias voltage is OK, I would suspect a problem with one or both TX pin diodes. This can be caused by arcing from L1 on the T/R board. There's a rubber insulting pad under the inductor that disi; /archives//html/Amps/2018-10/msg00109.html (9,019 bytes)

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