Chris wrote:
Where are you placing your antenna? I'm curious because you say the choke ring helps. Is it close to the ground, near a building? What might be the cause of the muiltipath that the choke ring is helping with
I've been working with RF long enough not to expect easy answers when it comes to multipath. It's pretty much always there, sometimes in sufficient quantity to be really troublesome, other times (as with GPS at my location) enough to notice but not to be really troublesome.
Typical suburban neighborhood, 2-story brick houses on ~80-foot lots. The antennas have been tried (i) on the second floor (under a plaster ceiling + asphalt shingle roof); (ii) in the attic (under the roof only); and (iii) on a mast about 15' above the roof peak (~45' AGL). The c/n improves ~ 7 dB going from (i) to (ii) and another ~2 dB going from (ii) to (iii) for all antennas, while the relative advantage in positioning and deviation of the choke ring is essentially unchanged. After experimenting, I installed the choke ring antenna in the attic peak.
A ground plane placed under the mag mount and the Bullet 3 did not improve the positioning or deviation.
Best regards, Charles _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
