[Amps] NOS 4CX1000A test and reconditioning

[Mike Manship]

Quoting Dan Hearn <dhearn at air-pipe.com>:

> Good information here. http://kk5dr.com/Tubes.html
> 73, Dan, N5AR
> 

One of the "facts" stated on this web page is that broadcast
stations keep all their final amplifier tubes filaments powered
at all times.  I used to work at a broadcast station with
three transmitters and we only had the filaments powered to the
transmitter in use. Were we the only one ?

73 de Mike W9OJ