Anyway I remembered I had a RN electronics 144 to 50mhz transverter ...guessing this would be suitable for using with my portsdown and minitoune RX ...must box them up one day !!! ....I also have a Gemini dual band 50/70 mhz linear amp which puts out about 300w ...so guess it might be ok for about 100w narrowband datv ??? .... antennas available dual band 6/4m moxon or 3+3 dualband innovantennas yagi ...both about 6dbi gain
So guess the above should work well on 51 mhz ????
Qth here is only 3m asl on east Essex coast ...500m to North Sea ....great sea path to continent..not so good for uk ..but who knows !!!
If anyone interested in any 50mhz tests sometime I will try and get it hooked up ...if not will leave it all in the loft !!!
Steve G4HTZ JO01JN
Great Wakering Essex JO01JN
My experience has been that amateur "linear" amplifiers sold for ssb/cw use are not good enough for digital ATV use. We really need class A linears, which you can tell because they draw a heavy bias current with no drive.