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[Amps] Silver-bearing solder? (WAS: Re: Solder flux)

To: Mark K5AM <k5am@zianet.com>
Subject: [Amps] Silver-bearing solder? (WAS: Re: Solder flux)
From: Jim Barber <audioguy@q.com>
Reply-to: audioguy@q.com
Date: Sun, 26 Aug 2012 12:41:55 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
On 8/26/2012 12:18 PM, Mark K5AM wrote:
> At 2012-08-26 15:48, Carl wrote:
>> Many years of hard use might crystalize the solder at the switch and
>> elsewhere in RF paths, it should be removed and fresh solder flowed on.
>
>
>
> More easily, a drop of liquid flux, and reheating, will brighten up
> the connection.
>
> 73,
>
> Mark, K5AM
> www.zianet.com/k5am
Which brings to mind a related question:
What's the latest thinking about using silver-bearing
solder in amp tank circuits? In the US, Radio Shack
sells 62/36/2% tin/lead/silver solder for $7 USD for
a 1.5 oz roll. One roll will do most tank circuits, so
it isn't terribly expensive, relatively speaking.
Is 2% enough silver to make a significant difference
in the ability to withstand thermal cycling and
vibration?

Thanks,
Jim N7CXI

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