Re: Coax Temperature effects

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Len Spyker
Posts: 147
Joined: Sat Apr 28, 2018 6:48 pm

Re: Coax Temperature effects

Post by Len Spyker » Thu Jul 08, 2010 12:22 am
















Hi Group.

 

The copper coax filter expands with temperature,  the expensive
commercial units are made from materials with lower expansion rates.

I propose putting a small Peltier cell < 5 watts (heat
and cool) and a temperature sensor on the base of the coax and surround it with
a lot of foam. &nbsp;

An 8 pin micro does the fast start up ramp and the slow control
ramps needed at the designated temperature.

A similar scheme was used for a tuned laser diode in a -40C
to +80C ambient. I will have a play.

&nbsp;

Kind regards

Leonard Spyker

&nbsp;






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