Date: Sat, 22 Sep 2018 20:10:49 +0200
From: "Peter Voelpel" <dj7ww@t-online.de>
To: "'Jim Thomson'" <jim.thom@telus.net>, <amps@contesting.com>
Subject: Re: [Amps] PASSIVE NEWORK CATHODE INPUT
<I dont see a reason for it.
<And I make no use of it with my GG amps.
<I dont use a passive input neither with GG amps, only with grid driven
<tetrodes.
<73
<Peter
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Jim Thomson
## You want some flywheel action with a tuned input..and a passive input
wont provide that.
..................................................................................................................
#### Ok, so you dont use either a passive input nor a pi input, nor a T
input.
I have not had much luck driving the cathode directly when using a SS xcvr.
Follow the return rf current of the GG triode tube. Without a PI input, the
only return is via the braid of the coax back to the xcvr, through one of the
caps
in the LP filter, then back down the center conductor of the same coax,
completing
the loop.
## I use what works. I don’t have any tube type xcvrs anymore.
Jim VE7RF
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