[Amps] Cleaning tubes

[Jim Barber]

Maybe I should start a tube marking service to put the new laser to 
work... ;-)

Jim, N7CXI

Colin Lamb wrote:
> I have a friend who called me one day.  He cleaned all the tubes in his HRO-50 with window cleaner.  
> 
> The reason he called was because the cleaning fluid removed all of the tube identification.  He asked me how to identify tubes without any identification.  
> 
> Good luck.  
> 
> Do not clean the tubes with anything that will remove the identification.  Heck, a dirty tube will not hurt anything.  I normally just wipe them off and plug em in.
> 
> 73,  Colin  K7FM
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