Behold, Pete KE9OA signaled from keyed 4-1000A filament:

Hi Gregg,
That is exactly what I plan to use..............I have
been
using that topology for several years now, so I've got the Diplexer
design nailed down pretty well.

You sir, are a god! Do you know how many people that are so-called
"engineering professionals" that do not know how to diplex the output of a
diode DBM?

I'm sold, when can I buy it ;-)


I am not sure why more manufacturers don't use doubly-balanced mixers,
especially when you can purchase a Mini-Circuits ADE-3 mixer for around
3 dollars.

Because they can pay 15 cents for a 2SCxxxx.

It all comes down to money. Nothing is about quality, just mark-up and
useless features.

You seem to be doing something that hasn't been done since the late 1950's
- engineering a soul into the unit :-)

You have my highest respect.

--
Gregg
*Perhaps it's useful, even if it can't be SPICE'd*
Visit the GeeK Zone - http://geek.scorpiorising.ca