If a previous owner was using an outboard TR switch, under some
circumstances he might not need the inboard TR-relay. I was considering
doing this to an old store-bought amp to achieve full QSK. I found one of
those Ameritron QSK units for cheap.
Mark, N5OT
----- Original Message -----
From: "Dave Meitzen" <dmeitzen@comcast.net>
To: "'Amps Reflector'" <amps@contesting.com>
Sent: Monday, June 12, 2006 12:23 PM
Subject: [Amps] SB-230 question
> My brother picked up a SB-230. It has a couple of mods. At .1 ohm resister
> in the cathode and the TR relay has been removed so you have a input and a
> output. Why would someone make these mods?
>
> I guess is the .1 ohm resistor protects the tube but the other?
> Thanks
> Dave
>
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>
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