[Boatanchors] Cleaning a bandswitch

[parinc1]

The  standard cleaner sems to be DeOxid. They make it in a spray can but that is wasteful (and maybe  dangerous), so for years now I have ben buying it in a small plastic bottle with a needle applicator.  On a rotary switch, a Q tip + DeOxid  is  ideal as long as you  don't leave cotton threads. But  first, I would remove the heterodyne oscillator crystals and clean the pins and then insert/pull reinsert and se if that does  not solve your problem.

Dale W4OP
________________________________
From: boatanchors-bounces at mailman.qth.net <boatanchors-bounces at mailman.qth.net> on behalf of Dave Sublette <k4to.dave at gmail.com>
Sent: Saturday, December 20, 2025 6:08 AM
To: Boatanchors Reflector <Boatanchors at mailman.qth.net>
Subject: [Boatanchors] Cleaning a bandswitch

My beloved Drake 2B has quit operating on a couple of bands.  I suspect
that a few positions on one or more of the bandswitch wafers need cleaning.
Q-tips, isopropyl alcohol and spray contact cleaner come to mind,  But is
seems to me that a very thin bladed burnishing tool for relay contacts
might also be called for.  I know caution is in order so as not to file
away the surface area of the delicat blades and fingers.  What other
techniques might you know of?  I am not anywhere near to being a
competent restoration tech.  I know there is a valued source of info here.
What say ye?

Thanks and 73,

Dave, K4TO
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