
This conversion, was relatively
straight-forward, and reasonably easy to implement. I wanted something
consistent for CW mode operations on 2304 Mhz, and then I saw this
unit, and figured I could change the
frequency and put it where I wanted.


The unit is manufactured by Opthos Inc. I tried
contacting them and getting a schematic for "their" unit, they
didn't want to talk to me, because I said I was an "Amateur Radio
Operator! Well having had some design
experience with UHF and Microwave systems, I decided to "Buzz" the unit
out and draw up a schematic, and
then dig into the unit and move the frequency. The magnatron in the
unit did not cover the 2304 Mhz range, so
I looked around in my "Junque Box" and dug out some old samples I
acquired when I was doing this stuff for
a living, as I seemed to recall getting a "Maggie" that did cover the
"Ham" frequencies as a sample. Sure enough
it was still there and wrapped carefully, just waiting to be used.
I popped it into place and using a
borrowed spectrum analyzer got it centered at 2304 Mhz. I then had to
come
up with a way to do the CW keying of the unit.
Next I needed a different 2304 antenna
system then my little HB beam, so I figured why not a pair of "QUAD"
2304 helical antenna systems. That is four antennas each for transmit
and receive. Home Depot came in handy
there as almost everything I needed was available there. Here is a
single antenna.
