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Re: [Amps] SB 200 Input Wafer Switch

To: gudguyham <>
Subject: Re: [Amps] SB 200 Input Wafer Switch
From: Ken Claerbout <>
Date: Sat, 30 Jan 2021 16:22:11 -0500
List-post: <>
That's exactly what's happening, the selected band is ever so slightly
making contact, shorting it out like the unused portions.  A gentle
tweak of the bandswitch opens it.  I didn't see a way to adjust that,
but I'll have a look now.

Ken K4ZW

On Sat, Jan 30, 2021 at 4:13 PM gudguyham <> wrote:
> 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 the
> input wafer switch, which is a little flaky.  On a couple of bands,
> the transceiver see's a high VSWR, which can be resolved by nudging
> the bandswitch a little further clockwise.
> I wouldn't mind replacing that switch.  It's a little beat up.  But I
> don't see any for sale.  Before I start searching for a suitable
> replacement, I thought I would see if anyone knows where I might be
> able to get a replacement?
> 73
> Ken K4ZW
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