[R-390] maintenance

[ToddRoberts2001 at aol.com]

In a message dated 6/20/2007 7:37:01 PM Eastern Standard Time, 
odyslim at comcast.net writes:
I just thought I would mention this to anybody that wondered how often to
check tubes. My radios are most always on unless it is stormy and the tubes
did not last as long as others claim. Could it be the tubes are slowly 
dieing
even if not in use? 40 years of sitting on a shelf before use. Could all 
the magic
ether be leaking out?

SCott
 
Hi Scott,
Running the R-390 24/7 puts a lot of hours on the tubes. Do you run any 
forced-air cooling into the radio? Do the tubes have the black IERC-type tube 
shields?  Reducing the heat of the tubes should dramatically increase their life 
especially when running them 24/7.

73 Todd WD4NGG



************************************** See what's free at http://www.aol.com.