1296 Mhz Project.
In 1997 I constructed a no tune 1296 Mhz transverter similar in design of the VK5EME project. The receiver used the no tune design while the transmitter was the DF8QK design using BFR91 transistors, from the RSGB Microwave Handbook. I built a amplifier using the G4PMK/G3SEK air cooled 2C39 design that because of the lack of drive, only delivered 10 watts output. The transverter Oscillator used the G4DDK design which is a well proven design that I later used in my 3Ghz, 5Ghz and 10Ghz transverters.

Here the front panel of the modified transverter at the top, and the amplifier underneath is shown.
I modified the transverter re-building the transmit, receive and oscillator sections into a 19 inch rack case, and the 2C39 amplifier into a similar 19 inch case with its own high voltage power supply. The transverter with the top cover removed.
The no-tune receiver board can be seen toward the front of the case. The transmit converter, oscillator and 1 watt amplifier can be seen along the bottom of the photo. The transmit driver was improved to a 1 watt output which enabled to 2C39 to perform at its maximum output for this design of 40 watts.


Shown above is the 2C39 amplifier and power supply. To the left of the photo is the 2C39 amplifier cavity with high frequency blower, while on the left is the high frequency power supply and high voltage filter capacitors. In the center rear is the control sequencer. The transverter and amplifier feed a 34 element DL6WU Yagi via LDF450 Heliax and produces excellent results. Contacts with VK5 VK6 and VK3 have been had so far.