My memory might be getting a little "haze gray" now, but I seem to remember we
regularly pushed much more than 1kw output with our 3924s'. I seem to
remember sometimes doing 2 or 3k. Of course these were for very short burst
transmissions. On the other hand, I also seem to remember the 3924 as being
rated for 1kw output in any mode,, no time limit, even AM and FSK .
Paul, kg7hf
uss georgia (ssbn-729 g)
uss barbey (ff-1078)
uss long beach (cgn-9)
Date: Tue, 21 Dec 2010 10:24:01 -0500
From: "Edward Gable" < EGABLE @Rochester. rr .com>
Subject: Re: [Amps] Harris RF110 and RF130 Amplifiers
To: "Peter Hansen" <oz1lpr@ hotmail .com>, <amps@contesting.com>
Message-ID: <001101cba124$bdecd2e0$6401a8c0@D3ZRTF31>
Content-Type: text/plain; format=flowed; charset ="iso-8859-1";
reply-type=original
Hello Peter: Yes, I'm still in contact with amateurs that are still using
the RF-110 (AM-3924) and variations. The weak link for amateurs is the 19
band switching output network. It works fine at 1 kW output, but most
amateurs want to use the power available from the pair of 4CX1500B's to run
much more RF output. The tank switch and tune/load fixed capacitors are
pretty much at their limit at 1 kW and can get unhappy at higher power. The
tank is broadband, 2 mHz wide per band at the higher frequencies and can and
should be returned for much better efficiency inside a narrower ham band.
The two 8122's and two 4CX1500B's are often worth more than what a lot of
folks pay for the amps surplus. Good luck with your project. Let me know
how you make out. I have a lot of fond, and some less than fond, memories
on that long and successful product line for Harris/RF.
73,
Ed Gable K2MP
p/o original RF-110 design team at Harris/RF Communications
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