The Motorola Timing 2000 and 3000 antennas are patch antennas. They have a pointed radome. The have very little ground plane, which reduces reception near the ground, which is desirable because of multipath effects. They also have quite a bit of filtering, so transmitting antennas near the units, will not affect them.
If you are not having a problem with multipath, a regular patch type antenna probally from anybody should work well. If you are having multipath problems a timing antenna should help or a choke ring assembly should help. I have built choke rings out of pie plates, and Dr. Tom Clark made a basic choke assembly using a common electric junction box. I had problems with multipath because of mountains about 3/5 around my location. I changed the look angles so my receivers only receive above 20 degrees above the horizon and I use timing antennas now. Brian KD4FM Matt Ettus wrote: > Is there really anything in particular which is different about the > antenna requirements of timing receivers as compared to ordinary > high-quality receivers? The timing antennas seem to be in pointy > radomes, so that tells me they are probably quad-helixes rather than > patch antennas. How is that advantageous for timing in particular? > > Thanks, > Matt > > _______________________________________________ > 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. > > _______________________________________________ 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.