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Re: [Amps] SB-230 question

To: <>
Subject: Re: [Amps] SB-230 question
From: "Mark Beckwith, N5OT" <>
Date: Tue, 13 Jun 2006 09:42:21 -0500
List-post: <>
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" <>
To: "'Amps Reflector'" <>
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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