Re: [time-nuts] Looking for information regarding Trimble 33429-00 microcentered GPS antenna.

> What's in the antenna that makes North interesting? and/or how would a > receiver take advantage of it? Hal, The people that work at the mm level get very picky about details; antenna reception is not perfectly symmetrical or centered or equal at every frequency or angle. There is a

Re: [time-nuts] Looking for information regarding Trimble 33429-00 microcentered GPS antenna.

Hi The antenna has a measured / documented pattern (amplitude and more importantly phase). If you have it pointed in a known direction, that information can be used when post processing carrier phase information. If you are trying to get to mm / picosecond levels on an multi hour L1/L2

Re: [time-nuts] Looking for information regarding Trimble 33429-00 microcentered GPS antenna.

kb...@n1k.org said: > If indeed dual frequency GPS is part of the intended use, the survey > oriented gear will be slightly happier if the “right” corner faces north. What's in the antenna that makes North interesting? and/or how would a receiver take advantage of it? -- These are my

Re: [time-nuts] Looking for information regarding Trimble 33429-00 microcentered GPS antenna.

Hi Since this *is* an L1 / L2 antenna, there are a lot of things you might be doing with it. If indeed dual frequency GPS is part of the intended use, the survey oriented gear will be slightly happier if the “right” corner faces north. It only really counts in that sort of L1 / L2 data

Re: [time-nuts] Looking for information regarding Trimble 33429-00 microcentered GPS antenna.

On Thu, Jan 18, 2018 at 1:39 PM, John Green wrote: > I have been gone for a good while, but now that I am officially retired, I > thought I would get back into the time/frequency hobby. I recently bought a > Trimble 33429-00 antenna off eBay. I can't seem to find much on the >

Re: [time-nuts] Looking for information regarding Trimble 33429-00 microcentered GPS antenna.

Hi It is very much a 12V antenna. It also is a “50 db gain” antenna as well. Most of the timing gear is looking for 20 to 30 db less gain than that in an antenna. The good news is that you can run a really big splitter after one to drive lots of stuff. The bad news is that you may still need