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[TowerTalk] relays

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Subject: [TowerTalk] relays
From: (Jim White, K4OJ)
Date: Wed Aug 13 11:49:02 2003
OOoooh OOoooh - me too me too

I also am working on a project... I am going to be needing some big 
caps... please also include in your reply to the group a good source for 
the following capacitors:

1361 pF

1640 pF

...sort of dove tails in with N2EA's needs.

Sorry to break your pileup, Jim


Jim Jarvis wrote:
> TT:
> I'm building a high power remote antenna tuner, which
> will be used to rough-match 50 ohm coax to open wire 
> line from an 80 meter dipole (possibly extended), on
> 160-10.  Beam won't go up until Spring, at earliest. 
> The tentative plan is to use relay switching between
> preset tuning positions for each band or band-segment,
> and to run the coax at 2:1 or less.  This will keep me
> in range of the shack auto-tuners.  
> All the posts I saw on the topic of relays dealt with
> an essentially matched situation, and high power.  At
> least potentially, I'll have high voltage to deal with
> on the high-Z side of this matching network.  
> Would anyone care to wade in on the topic of appropriate
> relays for switching taps on the inductor, or switching 
> output caps?  
> Anyone got a source for vacuum variables which might be
> appropriate in this application?
> Random $.02 welcome.
> Jim, N2EA
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