On Thu, Apr 10, 2014 at 2:48 PM, Bob Stewart <b...@evoria.net> wrote:
> .... The only particular anomaly I can see is that it uses satellites > close to the horizon for position fixing.I'm getting a reported SNR of 39 > at 5 degrees elevation and 37 at 3 degrees, though I notice the sat at 3 > degrees is not being used to calculate position. I never got around to > finishing the choke ring antenna with those pie pans. Maybe that needs to > move higher on my priority list. > Does the GPS' command set allow you to set a horizon mask? Some of them have a setting where you can specify a minimum elevation angle. 10 degrees is reasonable. So nothing within 10 deg. of the horizon is used. I don't think WAAS is going to help with 150ft jumps. It is more for "fine tuning" What you really need to do is spend $20 on a timing mode GPS, even an older Motorola Oncode has a self survey and fixed location mode. Pick a really good spot for the antenna -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
