THis choke is to resolve several problems.
One that is often forgtten is that many antennas don't have a DC path to ground.
Due to that a static charge can begin to build up ( even if the coupling
capacitors are perfect) and
a DC bias is developed on the output capacitor which effectively reduces the
peak RF voltage that
it can handle, thus causing an arc when transmitting.
73
Bill wa4lav
________________________________________
From: amps-bounces@contesting.com [amps-bounces@contesting.com] On Behalf Of Mr
Mike [kf8zn@yahoo.com]
Sent: Sunday, February 12, 2012 10:39 AM
To: amps@contesting.com
Subject: [Amps] 3-500z amp homebrew question
Hello!
Mike, AC2Q, here.
I am in the process of De-Re-Homebrewing a 6 meter single 3-500z amp I
required. In short I doubt it ever worked well, and while it would look good
schematically, the construction techniques were horrid.
My QUESTION is regarding the RFC that is downstream of the output network, what
is it's purpose? And what sort of current would it be carrying?
"Typically" in HF amps, it has a value of 2.5mH.
Any helpful input appreciated.
Mike
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