On Aug 17, 9:12*pm, mrhaney wrote:
I am looking for a few (10) diodes 1N270...It is a germanium and used
in Double Balanced mixers in SSB generation..Most suppliers have a $25
to $50 min order and I don`t care for that.. thanks * Harold W4PQW

Are you trying to reproduce something from a 60's handbook? I remember
them speccing 1N270's but that's because those were the parts people
had in the junkboxes back then. There is nothing at all magic about
germanium here. The silicon diodes will require slightly more drive
voltage to switch but that's not a big deal as you always drive them
way into saturation anyway.

NTE109 is the ECT/NTE number for a their medium-voltage germanium
replacement, officially listed in the NTE sub book, and Mouser and
maybe even your local radio/TV repairman would have some. Mouser has
no minimum order.

You will have much better luck using 1N914's or 1N4148's or even
better a real matched DBM from Minicircuits et al. "Experimental
Methods in RF Design" has a lot of good scoop on mixers that goes way
beyond anything in a 60's ARRL handbook.

Tim N3QE