K7ITM wrote in
:

....
The tough part of Suzy's quest is finding an acceptable diode in non-
surface-mount, it seems to me. I did find that a common 1N4148 non-
Schottky performed in my test detector circuit at 450MHz better than I
expected, and better than some other diodes I tried like 1N34 and
several other germaniums, and an axial-leaded Schottky or two in the
high voltage, high capacitance signal diode class that I believe Wim
warned against.
Presuming this is for the 70cm reflectometer, I have already pointed
Suzy to two Australian retailers with diodes that should work.

My assumption is that she will design the detector to work above the
square law region, and the usual practice is then to design the coupler
so that the dc voltage is much greater than the diode voltage drop, and
the scale shape is relatively independent of the diode drop.

Another retailer is minikits.com.au. Mark has 1N5711 for 0.66, and it
will probably cost $7 for postage. Last time I tried to buy diodes from
Mark, he wanted to know what I wanted them for, whether it was a worthy
project, and would deem to sell me only a small quantity. I subsequenctly
bought a couple of hundred 1N5711 on Ebay for $15.

Ebay is a huge source of schottky diodes (if you must prefer schottky).
Just search for schottky, sbd, barrier, hot carrier etc, then get the
specs for each one and see if they are suitable. Thing is that most the
signal ones will be SM packages of one or two diodes, but they can be
used with pigtails attached.

There are 9 listings on Ebay right now for 1N5711.

Owen