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Re: [Amps] Automotive Relays

To: <n4zr@contesting.com>, <amps@contesting.com>
Subject: Re: [Amps] Automotive Relays
From: "David Cutter" <d.cutter@ntlworld.com>
Date: Sun, 8 Aug 2010 11:45:35 +0100
List-post: <amps@contesting.com">mailto:amps@contesting.com>
That begs a question I've often puzzled over:  how does a contact rated at 
10A cope with uV level signals, particularly after the gold flash has gone ?

David
G3UNA


>I did a survey about 15 years ago on CQ-Contest (then the only reflector
> available).  IIRC, there were essentially no complaints about the
> Ameritron RCS-8 or the TopTen remote relay box.  I used two TopTens for
> maybe 10 years, often operating into >3:1 SWRs at >1200 watts (for
> example, running an 80m array cut for CW up in the DX phone window) and
> never had any relay problems.  Currently using an RCS-10, which can have
> up to 7 relays in the RF path.  Will be interesting to see how it holds 
> up.
>
> Right now my Array Solutions Stackmatch has a bad relay (dirty?).
> Symptom is occasional high SWR and a lack of received signal on the
> lower antenna in my tribander stack.  If I send a little high power RF
> through it things are then fine.
>
> 73, Pete N4ZR
> 
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