[Milsurplus] Russian radio construction techniques

[Bruce Gentry]

It could have been silver brazed but is more likely phosphor bronze 
because it doesn't need flux.  It is used a great deal for joining 
connections on refrigeration equipment. It was probably heated with a 
tiny oxy/acetylene or oxy/hydrogen torch as used by jewelry 
craftspeople. I think one reason for making connections that way would 
be resilience against moisture and temperature swings that can 
crystalize lead/tin solder.

      Bruce Gentry, KA2IVY

On 3/30/16 7:22 PM, Clare Owens wrote:
> Hi All,
>
> A friend of mine who collects and restores USA and foreign radios just 
> received a 1958 Russian receiver, model "Iskra 53" and has discovered 
> that in his words, "rather than normal solder all of the component 
> connections are made with brazed copper that must have been done with 
> some sort of hand held copper wire feed arc welder!  In other words, 
> it is impossible to unsolder any joints in the radio!"
>
> Seems pretty odd.  Dave Stinson has suggested that maybe the 
> Stalinists were running short of lead.  Or maybe the radios were meant 
> to be unmodifiable by the common people.
>
> Anybody else seen anything like this?  I can send pix to anyone who 
> wants to see the radio's innards.
>
> Thanks,
>
> Clare
>
>
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