Ooops, in my first reply I missed that your DVM has only 0.01V
resolution. Wow! Even a 3.5 digit one at 2V FS resolves millivolts.
So to keep things passive, use an RF transformer to step up the voltage
to the detector diode(s). I trust your DVM has a high input
resistance, so the RF loading by the detector and its DVM load should
be quite small. You might be aided by using a voltage doubler scheme,
in addition to the transformer stepup.

Cheers,
Tom

gudmundur wrote:
Hello all,

I want to try to detect signal levels of 50mv to 200mv peak to peak.
I need a passive circuit with no amplifiers, and I will be feeding a
DVM with .01v resolution. The problem I am having is that a 1N34 will
not conduct very well at these low levels. Is there a more suitable
diode? Can you give me a part number, or a simple way to get just one
or two of these diodes? What the diode is looking at is a 50 ohm port
on a 30 to 60 mhz I.F. chassis.

Thank you for your time.