<<
>it occurs to me that a double signal (one with
>horizontal, one with vertical) polarization where one is inverted would
>provide excelent noise reduction accross long distances.
>>
This is very poor choice. Faraday depolarization will de-polarize all but the
closest possible LP microwave interstellar signals. This will corrode any
modulation and dilute the SNR received at a given LP.
CP is not so affected.
C'mon Paul; this I DID expect you to know;-)
73
Chip N1IR