Amateur Radio Station
VK2CBD
Brett Dawson

23cm EME
Dish on hinged mast
Radio IC-910H
Amplifier Khune MKU PA 13200A
Power is 100W at feed
Feed is OK1DFC Septum
LNA is G4DDK
Tracking VK5DJ controller
Dish is 3m TVRO extended to 3.9m
  23cm EME RX System Performance

  Sun noise / cold sky ratio is 14.1dB with 23cm flux 84

  Moon noise / cold sky ratio is approximately 0.1 dB near perigee

  50 ohm termination / cold sky ratio is 6.9 dB

  Mesurements done with HP8594E and HP8790A in power measurement mode
My 23cm EME setup has taken about 2 years to build and perfect.  I am happy that I now have a system
which is close to optimum.

I started with a 3m mesh TVRO dish, which I then extended to give the current antenna diameter of 3.9m.

I put a lot of effort into getting az/el drive system working properly.  I use the VK5DJ tracking system
which works very well.  It was resonably easy to build and get working and has been very reliable.  I find that I can
point the 3.9m antenna so that it is never more than about 0.2dB off the antenna gain maximum (23cm).

I purchased the OK1DFC feed from Zdenek.  It has also performed very well.  I have built 2 of the G4DDK LNA's.
Again both work well and have noise figures of around 0.3 dB.

I have mostly been active using JT65C, but am keen to do more CW.  I have been working on improving my CW.