HEEHEEHEEHEE
Actually, I had planned to attach the output to a TS-117 dummy load and monitor
temperature rise, and feed the input with a variety of QRP HF rigs, or with a
sig gen driving a broadband linear amp if I can kludge something up.
220 MHz is outside the scope of this experiment. The purpose is to develop a
broad-banded input circuit for HF amps that requires no tuning but provides
better efficiency than an untuned input at little additional cost.
In general, broad-banding the input for VHF and UHF amps is not feasible
because the bands of interest are so far apart, and a tuned input can be
achieved at low cost with a couple of pieces of copper and some dielectric
sheet.
Jim N6OTQ
Original Message:
-----------------
From: S. J. Blackwell w5lu@hotmail.com
To: <amps@contesting.com>
Date: Fri, 18 Jan 2002 17:07:51 +0000
To: jstrohm@texas.net, amps@contesting.com
Subject: Re: [AMPS] Input matching experiment
Jim,
Please set the 812A GG amp with the broad band untuned input to operate on
the 220MHz band.
Good luck,
Sam, W5LU
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