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Re: Topband: Remote coax switching

To: <n9dx@comcast.net>
Subject: Re: Topband: Remote coax switching
From: "Rick Karlquist" <richard@karlquist.com>
Reply-to: richard@karlquist.com
Date: Wed, 19 Nov 2003 18:47:55 -0800 (PST)
List-post: <mailto:topband@contesting.com>
What I have is boards with window comparators that detect
if the voltage is in a particular 4 volt voltage band,
and if so, activate the right relay.  I have a 12 position
rotary switch that puts out 12, 16, 20, 24, etc volts.

Rick

Larry Higgins said:
> Reading all the posts about cores and their problems, I'm wondering why
> nobody is talking about using remote transistors to switch the relays.
> Would a large  resistance in series with the base (or gate) and an rf
> bypass capacitor do the job?  Or are transistors problematic with
> respect to rf?
>
> Larry, N9DX
>
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