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The procedure to neutralize an amp is pretty universal.
The purpose is to cancel the feedthrough RF from the driver via the Cg-p capacitance. Disengage the B+ to the PA (plate and screen for tetrodes/pentodes), but keep the plate tank connected. Transmit into a dummy load with power meter inline. Adjust neutralization cap until tuning the plate tank circuit through its range causes absolute minimal or no output. Unit is now neutralized and B+ can be reconnected to the PA and you are ready to rock! -- Gregg *It's probably useful, even if it can't be SPICE'd* http://geek.scorpiorising.ca |
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