Hi Steve, yes, the tubes and rfc should be in place. The anode C of the
tubes have a significant effect at higher frequencies and the rfc has effects
at lower frequencies.
The choke can have effects near self resonant frequencies as well.
73,
Gerald K5GW
In a message dated 7/15/2012 11:15:02 P.M. Central Daylight Time,
kk7uv@bresnan.net writes:
I am putting a new coil in my amp's Pi-Net.
I am going to use the MFJ259b on the output to find the coil taps (as I did
a few years ago) but I've forgotten some set-up details.
For my 3x813's, my notes indicate I used a 2200-ohm load resistor to
simulate the plate load which connects between the tube side of the
blocking
cap and chassis ground.
My questions are - do I leave the tubes in circuit? Do I leave the plate
choke in circuit?
Thanks,
Steve KK7UV
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