[TowerTalk] cleaning relay contacts ?

[jim.thom jim.thom@telus.net]

Date: Tue, 17 Feb 2026 12:19:54 -0800
From: Leeson <leeson at earthlink.net>
To: towertalk at contesting.com
Cc: Jamie WW3S <ww3s at pm.me>, "Richard (Rick) Karlquist"
        <richard at karlquist.com>
Subject: Re: [TowerTalk] cleaning relay contacts ?

>I think the limited DC arc is the cleaning mechanism, but it would be
>good to give AC a try. A typical rig relay failure point is the RX side
>of the TX-RX relay, which is often available from the external connectors

>Dave.

Wetting current is one method.
Using bifurcated contacts is another method, typ used on audio gear
contacts.
DPDT, or  DPST relays, with contacts in parallel is another method.
Vac relays are another method.

Jim  VE7RF