Floyd Davidson wrote:
"---the look angle for a geosynchronous satellite here is about 12
degrees if the satellite is directly south."

Floyd is in Alaska. Floyd`s example of anomalous propagation from
reflection to a terrestial transmission was in Arizona. On the equator,
the "look angle" may be nearly straight up.

The reason a satellite dish is less susceptible to earth reflections is
that the satellite dish is not aimed to pick the reflections up. The
satellite dish is aimed at the sky.

A terrestrial microwave dish aimed directly at the satellite dish is
likely not transmitting an interfering frequency, but if so, it is
unlikely to be aligned well enough or above the horizon of the satellite
dish.

The approximate specifications of a 6-foot dish for beamwidth and gain
versus frequency a

1.3 GHz 9 deg. 25 dbi

2.3 GHz 5 deg. 30 dbi

3.5 GHz 4 deg. 33 dbi

6 GHz 2 deg. 36 dbi

10 GHz 1.5 deg 43 dbi

25 GHz 0.5 deg 50 dbi

Sources of the above are the "RSGB VHF-UHF Manual" and the ARRL Antenna
book (they agree).

In moderate latitudes, the satellite earth station antenna is really
looking up. It is quite likely terrestrial signals are not within range
of its bandwidth, beamwidth, or distance.

Best regards, Richard Harrison, KB5WZI