Contact cleaners

[Greg Gore; WA1KBQ]

I'll have to agree with that. Years ago before I knew better after  
spraying the bandswitch on an SX-88 I had birdies all over the place on the 10  
meter band because of RF leakage across the wafers. Needless to say a careful  
clean-up job followed that miss-step which returned the receiver to proper  
operation on 10M again. 
 
Another case years ago also with an HQ-110 it resulted in the bandswitch  
getting too stiff to turn as the wafers absorbed contact  cleaner.
 
73, Greg; WA1KBQ
 
 
In a message dated 8/1/2009 9:35:45 P.M. Atlantic Standard Time, W4AWM  
writes:

Never spray anything on a rotary switch!   Use a Q-tip or tape head cleaner 
dipped in whatever solution you decide to  use. Use the cleaner sparingly 
and clean carefully. Any other way of cleaning  spells disaster either 
immediate or down the road. Been there, done  that!
 
73,
 
John,  W4AWM

 
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