When we are considering L/S and
U/S, we should remember the advantages of U/V and V/U. The original choice
of U/V for phase 3 satellites allowed for an antenna that would provide 75%
orbit coverage. Path loss for L and S is much higher so AO13 and AO-40
had much narrower beams and covered less of the orbit in those modes. So, in
addition to the fact that S will be unavailable in many areas due
to noise levels that are 20+ dB higher today, the time
available in those areas for this mode is much less than
for U/V or V/U. The attached document provides a graphical
comparison of U and L uplink antenna coverage for the same ground
station radiated power level. The V and S downlinks are very
similar.
73,
John
KD6OZH
----- Original Message -----
Sent: Saturday, September 16, 2006 22:06
UTC
Subject: [eagle] Re: [Advisors] [Fwd: Re: S
band and Eagle: an appeal for ahigher level discu...