Yes leave the tube in! You want the capacitance of the tube in the circuit
as well as all the other components that are normally in the circuit.
Just put the resistor from plate to ground in a short path. Just wedging it
in a convenient spot works well. Do nothing else!
73
Gary K4FMX
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of chuck
> Sent: Tuesday, April 21, 2009 10:05 AM
> To: amps@contesting.com
> Subject: [Amps] tank calculations - MFJ analizer - resistor
>
>
>
>
>
> ok, quick question...(it'll be a poll)
>
> DO I leave the tube connected to the tank circuit and put on a 1/2w
> resistor
> or disconnect the tube from the tank to do
> the sweeps for tuning calculations
>
> some say leave the tube in.
>
>
> I get quite a bit of difference with the tube in. I put 1500ohms to ground
> of course amp is OFF, and sweep thru to find the best
> position for my tank taps on each band.
>
>
> thoughts!!!???
>
>
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