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Re: [Amps] Series C in amp output

Subject: Re: [Amps] Series C in amp output
From: Martin Sole <>
Date: Tue, 13 Feb 2018 12:08:02 +0700
List-post: <>
Okay, thanks to Bill and Steve I think we can say it's just a safety measure in case of blocking cap failure. Maybe these amps don't have the traditional RFC across the output. Never did like that idea, always thought they looked a bit ineffective if faced with an amp or more at a few kV.

Martin, HS0ZED

On 10/02/2018 00:48, Steve Wright wrote:
It's just a safety DC-->antenna block, in case of HT badness in the tank

On 09/02/18 23:06, Martin Sole wrote:
Amps from Acom and OM, maybe some others, have a large amount of
capacitance in series with the output after the power/SWR bridge. In
the case of the Acom 1000 this is 6 parallel 10nF/500v disc ceramic
capacitors with a 1 megohm (static bleed?) across them.

Have not seen this configuration on older Alpha amps or others. Can
anyone comment on the purpose?


Martin, HS0ZED

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