[R-390] help needed on RF deck mechanical alignment

Grayson Evans wa4gvm at gmail.com
Sun Mar 15 11:20:09 EDT 2015


Finally rebuilt the RF deck on my early Collins 390A, but having some head scratching trying to get everything back aligned.
I used the nice pictorials by Scott Seickel that shows closeups of how to put it back together.
(by the way, there is an error in the reassembly steps)
Unfortunately, his closeup photo of where the bandswitch should be does not look like my bandswitch.  I assume this is because I have an older version than he did.  My contacts are in a different location and the wipers are different.
I have tried to use where I think the switch should be but very hard to see where the wipers are on the other switch sections.   I can’t find anything that says how the contacts are numbered so I could use the schematic to try to set. 

Any help on setting this thing would be appreciated.

Grayson
TA2ZGE - Ankara, Turkey
KJ7UM
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