[Amps] 3CX3000 tuned input calibration

Tom W8JI w8ji at w8ji.com
Tue Oct 24 19:43:34 EDT 2006


would be necessary.  I merely hooked up the 50 resistor to 
the output of the
tuned circuit and fed power to the input and watched the SWR 
as I adjusted
the trimmers(one on each side of the toroid inductor).  Any 
thoughts on what
I'm doing wrong?  BTW, I left the tuned input in its final 
location under
the RF Deck for the calibration.>>

The filament choke and other parts should be connected. The 
resistor should go from the tube cathode or filament to 
ground. The tube should be cold.

73 Tom

 




More information about the Amps mailing list