I'm now setup again for DATV on 51.7MHz.
If any European (or uk) stations want to try I can be available for tests.
Tx: Adalm Pluto, 100W DVB-S2 to 5el Yagi
Rx: PGA103 LNA > narrow Band Pass Filter > Ham-it-up converter to 176.7MHz for Minitioune Rx.
I Prefer 125Ks as I have QRM either side of 51.7, but 250Ks maybe possible.
My Rx Spectrum below, this is after phase/amplitude cancellation of a lot of noise!
The two peaks along with many smaller ones wander about +/-50KHz.
I have to improve the noise gathering antenna a bit yet........
An hour later and a better 'noise reference' antenna i have reduced the QRM a lot!
Spectrum vs Rx with 125Ks test signal.
This should be sensitive enough now: