5 Aug
2015
5 Aug
'15
1:36 p.m.
Tom,
You are correct in that the antenna with the smaller effective aparature will collect less energy in a given time period.
But things are never equal - preamp performance, feedline loss etc. For satellite antennas, maximizing Gain/Noise Temperature is essential figure of merit. It does little good to collect lots of energy if that energy is thermal radiation frin the roof under your antenna!
-Joe KM1P