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Re: [Amps] SB 200 Input Wafer Switch

Subject: Re: [Amps] SB 200 Input Wafer Switch
From: Benjamin Deovlet via Amps <>
Reply-to: Benjamin Deovlet <>
Date: Sat, 30 Jan 2021 21:49:00 +0000 (UTC)
List-post: <>
I've repaired several SB-200 amplifiers, and in all but one case, the input 
switch index alignment was the problem.  Once it was properly aligned, the 
amplifiers worked fine. Ben, W6FDU In a message dated 1/30/2021 1:13:38 PM 
Pacific Standard Time, writes: 
The problem might not be the switch.  If the contacts are in good condition and 
you cleaned the switch the problem might be alignment.  The shaft from the main 
switch can be rotated by loosening the main nut on the front panel, you have to 
align the opening on either end of the switch rotor so that the center of the 
opening is in the center of the free switch contact.  If the opening is off the 
error is compounded and some bands might be shorting.  Your moving the band 
switch might be breaking the short.  Make sure you check that before you go 
nuts changing the wager.  Sent from the all new Aol app for iOS  On Saturday, 
January 30, 2021, 2:12 PM, Ken Claerbout <> wrote: I have an 
SB-200 I restored for a friend.  It had a fried bandswitch.I installed the 
Harbach mods also.  It works great except for theinput wafer switch, which is a 
little flaky.  On a couple of bands,the transceiver see's a high VSWR, which 
can be resolved by nudgingthe bandswitch a little further clockwise. I wouldn't 
mind replacing that switch.  It's a little beat up.  But Idon't see any for 
sale.  Before I start searching for a suitablereplacement, I thought I would 
see if anyone knows where I might beable to get a replacement? 73Ken 
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