GB3JV has 23cm input :-)
Posted: Wed Dec 22, 2021 2:36 pm
I know, because I just tested it 
After some tests yesterday with Justin G8YTZ (who is pretty much LOS from me at home, although I suspect some rooftops and trees spoil the path) I got my 23cms signal across to him. That showed that both a front-end filter and some pre-amplification would be a help. Today he visited the 'JV site and installed a preamp and filter. The results were spectacular - I was getting the same MER in my shack as via the repeater (26+).
So after peaking up the flat-plate (IRO +10dBD) I then started winding down the power. I got to MER 6 and then measured what I was putting into my cable (70' of LDF4-50 and 13m of Westflex103 up the mast to 10m AGL).
All of 20mW!!
Further tests show I can get in with my Portsdown/Pluto driving a cheap 20dB eBay amp, without overdriving the small amp. That's more like it
Gareth
After some tests yesterday with Justin G8YTZ (who is pretty much LOS from me at home, although I suspect some rooftops and trees spoil the path) I got my 23cms signal across to him. That showed that both a front-end filter and some pre-amplification would be a help. Today he visited the 'JV site and installed a preamp and filter. The results were spectacular - I was getting the same MER in my shack as via the repeater (26+).
So after peaking up the flat-plate (IRO +10dBD) I then started winding down the power. I got to MER 6 and then measured what I was putting into my cable (70' of LDF4-50 and 13m of Westflex103 up the mast to 10m AGL).
All of 20mW!!
Further tests show I can get in with my Portsdown/Pluto driving a cheap 20dB eBay amp, without overdriving the small amp. That's more like it
Gareth
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