Australian 109 set

[Mike K]

There is a temporary RF ammeter located where the original one has been , these are prone to burning out . The transmitter is the lower half , very simple design , and very easy to repair . There is provision for an optional XTAL , for locking the set , or you can the VFO . The VFO uses a very odd system of tuning , a roller inductor instead of the usual variable capacitor . After testing the VFO for a few hours , transmitting into a dummy load , and monitoring drift , I decided the VFO wasn't stable enough for on air use , I used a XTAL instead .

The antenna coupling circuit is rather basic , not very good at coping with highly varied antenna loads/impedances .

Mike