I have recently done some side-by-side testing of a new PCTel antenna vs an
older Trimble bullet antenna to see if there was any degradation of GPS
operation. The PCTel had 26 dB gain and a sharp bandpass filter incorporated
that was 60 dB down at the the lower edge of the GPS band (upper edge of
Is it possible/interesting to design an antenna that has a low-angle cutoff
at 20 or 30 degrees? That probably won't eliminate many satellites that are
useful for timing receivers.
I'm interested in things like a Z3801A or a ThunderBolt. I'm assuming it is
not reasonable to replace the GPS
