xpyttl wrote:
Jim Kortge, K8IQY, uses a cascode amp in his famous 2N2/40. He actually
uses it in the transmitter ... even with a passive mixer you don't need a
lot of gain on 40!

See http://www.qsl.net/k8iqy

..
There are two ways of looking at cascade, the devices are in series for
dc and ac, or only ac. The above link shows the latter. I had an idea
for a hybrid cascade amp of the first kind. The input would be a jfet
which sorta becomes the emitter resistor for a bipolar transistor as the
second stage of the cascade amp. The bipolar is run in grounded base
(for ac, normal bias network and base bypassed to ground with a cap).
Would give the advantages of high input impedance of the fet and high
gain from the bipolar.