The wideband RF-preamplifier in the TA1800 by Racal uses 4 parallel
2N3553 in common base, transformer coupled in and out, it does 10db,
but standard level of that stage is 50mW in 250mW out.
I will scan that diagram as well.
Probably I will put that diagram of the TA1800, their driver and predriver
and that of the Harris HFL2500 also on a website tomorrow night, parallel
to mailing it to you.
From: firstname.lastname@example.org [mailto:email@example.com] On
Behalf Of Tom Cathey
I will look at the OPA695 RF op-amp you suggested. A friend also suggested
I could take the 10 mw out of the FT-1000D and build a Norton push pull
amplifier with some 2N3375's he has. A pair would do about a watt class A.
Maybe that would be a good driver for the 6146, since only 100Mw is needed.
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