Strong interferences: may be the main challenge:
Power of TV is 80 db above quiet sun emission at 200 MHz (Nanηay)
A stop band filter may be required for each strong emitter
The power is very high in the wide band electronic
Very high dynamic components are
needed in order to avoid intermodulation (which can generate thousands of
parasitic lines)
That level may be to high for
digital filtering and interference excision.
Site quality is very important.