[TowerTalk] cleaning relay contacts ?

[Jim Lux]

The contact material also makes a difference.


On Wed, 18 Feb 2026 10:15:05 -0800, "jim.thom jim.thom at telus.net" <jim.thom at telus.net> wrote:

Date: Tue, 17 Feb 2026 12:19:54 -0800
From: Leeson 
To: towertalk at contesting.com
Cc: Jamie WW3S , "Richard (Rick) Karlquist"

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
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