[Elecraft] Cold K3

[Igor Sokolov]

Here in Russia we have fun contest called "Frost the Red Nose" where 
participants are awarded extra points for low temperatures. A lot of 
participants operate in below freezing temperatures every year. Stories from 
some of the participants (pdf file) can be downloaded here
http://qrp.ru/files/stories/category/4-froststories?download=292%3Afrost2013

Text is in Russian but there are many pictures that said to be "worth a 
thousand words".

73, Igor UA9CDC

----- Original Message ----- 
From: "Richard Fjeld" <rpfjeld at outlook.com>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, October 05, 2016 10:56 AM
Subject: Re: [Elecraft] Cold K3


> On 10/4/2016 7:16 PM, Edward R Cole wrote:
> I've not tried running my K3 at outside temps,
>
> Hello Ed,
>
> I would caution you against trying your K3 in those temps.  Minus 60
> degrees F. is the coldest on record for Minnesota, and you experience
> far colder that that. The cold may do multiple things to the K3 if it
> has multi-layer circuit boards.  I didn't notice if it does.
>
> Our club left a repeater in an unheated enclosure one winter. I would
> estimate it wasn't much colder than minus 30 degrees F. at that
> location. (To clarify for others, this is 30 degrees F. below zero.)  I
> have seen what the multi-layer circuit board looked like. More
> specifically, the thru-the-hole solder connections from one layer to
> another were cracked. Maybe it was the type of solder used???
>
> I'm sure circuit designs have changed since the first solid state rigs I
> described in the cold.  LCD screens hadn't been heard of yet.  I'm
> surprised they don't freeze and get damaged in your temps.  It is
> interesting to read of your outdoor experiences.
>
> 73,
>   Dick, n0ce
>
>
>
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