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Looking over the TR-4 it appears generally clean, but I spotted

a loose wire (see the yellow wire looped over the switch wafer in

Image 8) here ... and

rust on the ball bearings in Image 10.

I received second-hand information that this rig was 'gone through'

by Ron, KB4HFN, several years ago - perhaps the disconnected wire

was part of a mod of some sort?

(The rig has been in non-climate controlled storage, by the Ham from

whom I received it, for about three years. It's unclear how long it may

have sat unused prior to that. It was tested on 10m prior to the swap.

He chose 10m because all of his other antennas were damaged or

destroyed by a hurricane a few months back.)

Thanks,

David KD4E