UHF TO HF transverter
Preliminary details only, I hope to add block schematic etc soon.
Click to enlarge
Following on from the transverters that I have built for VHF I thought that an HF transverter would be fun and something that it was not possible for me to use until the recent changes in the UK licensing conditions allowed code free HF operations. Transverting from UHF to HF using a commercial UHF transceiver gives a full 10MHz of HF coverage with no change to the local oscillator frequency of the transverter. Band pass and low pass filter switching will be required but at the moment I've not got that far and am content with operation on 14MHz only although at the time of writing conditions are not good for QRP.
Built 2004
2w out 430Mhz in 14MHz out
104Mhz Xtal x 4 = 416(430 minus 416 = 14)
SBL1 balanced mixer
PA kit of Motorola AN-779 28volt version
Best DX so far W (New York)
To hear SV2CXI worked using this transverter with only 2watts RF out CLICK HERE 126k (Recorded 23/12/2004)
To hear WE2F worked using this transverter with only 2watts RF out CLICK HERE 116k (Recorded 13/02/2005)
