Dave, Can you please let us know what you go with for your splitter choice?
I noticed companies like EndRun Technologies use ones from these folks: http://gpsnetworking.com/GPS-antenna-splitters.asp TESSCO might stock those if you ask them. Regards, John W. On Mon, Oct 6, 2014 at 6:09 PM, Bob Camp <[email protected]> wrote: > Hi > > Missed the survey question… > > If a ns in free air is about 1 foot (30 cm), then you probably want a > survey that is better than 6” to keep the error down. You do not want to > have the antennas on top of each other, so yes, the GPS will need a survey > / location each time you change antennas. If you go with the 10’ spacing, > then you will get some pretty big jumps without switching the location. > > Bob > > On Oct 6, 2014, at 4:01 PM, Dave M <[email protected]> wrote: > > > Does anyone in the group have, or can point me to, a low-cost (but not > > cheap) 2-port splitter for a GPS antenna? Those on Ebay are rather > > expensive. > > > > I have two GPSDO units, and have both an older timing antenna and a new > > choke ring antenna (Thanks, Pete L). I already have one 2-port splitter > > (working well), but my intent is to connect both antennas through the > > splitters and a couple coaxial relays so that I can, with the twist of a > > switch, allow me to run each GPS from a different antenna, or both from > the > > same antenna. I would like to gather some data as to the differences > > between the two antennas. I know I could switch the connections > manually, > > but I like the idea of a switch to sort of automate the connections, and > I'd > > need another splitter anyway. > > > > Before I go to the trouble and expense of building upon this idea, are > there > > any comments as to the value of the project? > > Some questions come to mind: > > I'm thinking about mounting both antennas on the same mast, at the same > > elevation, just separated by a couple feet. Any problems that I should > be > > aware of by putting both antennas so close together? Will that small > > distance have a noticeable effect when switching a receiver from one > antenna > > to the other? Will the GPS notice the difference and want to do another > > survey? > > > > Thanks for your comments. > > Dave M > > _______________________________________________ > > 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. > > _______________________________________________ > 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. > _______________________________________________ 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.
