On Feb 21, 4:44 am, "Denny" wrote:
try herehttp://home.att.net/~ray.l.cross/murod_mm/

denny / k8do


Thanks for the link. Interesting but a little bit advanced for me.

I talked with an RF engineer who worked for Collins radio who
suggested just using a JFET buffer between the antenna rod and the
mixer input so the impedance matching problem would go away, and I
would get much more signal since the antenna rod will see an open
circuit (no load) and have maximum Q.

He was right, and I was able to get about 18dB more signal from the
antenna rod without using any additional windings. But I had to add a
JFET, resistor, and two caps.

-Bill