Steve Katz wrote:
> Hi Bill,
>
> Remember that we used this stuff mostly in the very cold winter WX for the DX
> contests and you had the relay boxes mounted in the hallway behind the main
> shack in a fairly unheated area that might have been cold. In a warmer
> climate the RYs might have pulled in easier. I don't really know, but it's a
> theory. :-P
>
> Steve WB2WIK/6
>
>
>
generally, relays pull in easier when cold, if driven from a constant
voltage supply. The resistance of the winding is lower when cold than
hot, so the current is greater. There's not any lubricant to get stiff
or viscous in the cold weather.
(assuming you're not talking -40 sorts of temperatures where the spring
would start to get brittle)
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