Well, finished the testing of the temperature compensated biasing on
the new amplifier. It works as well as the original "hay-wired"
prototype I first made. I think the cicuit is very repeatable. I was
able to hold a 500mA collector current bias to +/-50mA from -30 to
+85C. Without the compensation, the variance over that temperature
range is about 4 to 5 Amps. I'm now in the process of evaluating the RF
performance... and then some life testing. If anyone is curious... the
preliminary specs are available for viewing at
http://www.telstar-electronics.com/S...202879ABTC.pdf

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