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Re: [Amps] 3CX3000 tuned input calibration

To: "Bob Maser" <bmaser@tampabay.rr.com>,"AMPS" <amps@contesting.com>
Subject: Re: [Amps] 3CX3000 tuned input calibration
From: "Tom W8JI" <w8ji@w8ji.com>
Date: Tue, 24 Oct 2006 19:43:34 -0400
List-post: <mailto:amps@contesting.com>
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

 


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