"ken scharf" wrote in message
. ..
The writer's an idiot. The 7360 is good to over 50 MHz IF!

Bob
What he claimed was that the conversion gain dropped to unity above
that frequency. That doesn't mean it isn't a good mixer at 50mhz.
Diode ring mixers have a unity (or LESS!) conversion gain, yet they
are very good mixers.

I have to wonder if the guy took a broadband, untuned
PD circuit and tried to use it as a broadband mixer?

If that's the case, then the interelectrode c
apacities would definitely limit BW in a high
impedance circuit, unless they were
"tuned" out using a LC resonant circuit. I ran into that
headscratcher trying to figure out how to drive the
deflectors using a broadband balun type arrangement;
like was done in the Squires RX.

Pete