Richard, I believe, from your description, that the switch is a JV series
Centralab switch. These are used in quite a few linear amps and antenna
tuners. You could probably obtain one from MFJ. I think some of the TenTec
linears use them also.
73, Dan, N5AR
----- Original Message -----
From: Richard Hamlin <rdhcai@msn.com>
To: <amps@contesting.com>
Sent: Saturday, February 08, 2003 12:15 PM
Subject: [Amps] rebuilding switches?
> Have any of you tried to rebuild arced rotary swithces?
> I bought a beautiful Dentron tuner MT3000A, but the
> SP18T rotary switch has some serious damage on the
> rotor arm. This is the kind of switch that sort of drags
> or pushes a dome shaped contact over the fixed contacts.
> Between each fixed contact is sort of a ceramic "speedbump"
> that skates the rotor contact up and over. The feeler that holds
> the rotor contact has burned badly. I have no idea where to get
> SP18T switch this size. Thanks much! rich WA7KMA
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