For what it is worth, I got a used HP/Symmetricom 58532a antenna off of eBay for about $50. It needed a minor repair (broken internal coax) but once that was done it has worked great for me. The other one I considered was the 58504a but they were more expensive on the used market and didn't seem as weather proof (a special weather proof cap was offered as an add-on but most don't have it) so I went with the newer 58532a.
-Matthew D'Asaro > On Nov 4, 2018, at 8:43 AM, Toby Riddell <[email protected]> wrote: > > Thanks Scott - I will look into getting one of those. And noted re. the > roofline! > >> On Sun, 4 Nov 2018 at 07:26, Scott McGrath <[email protected]> wrote: >> >> For timing use ideally it should be above the roofline by at least several >> feet otherwise satellites close to the horizon will be not be visible. >> >> The generally preferred antenna is the Agilent/Keysight/Symmetricom. >> 58504A antenna also any outdoor antenna made by Trimble or TrueTime as long >> as antenna does not use a downconverter. >> >> >> >> On Nov 3, 2018, at 5:26 PM, Toby Riddell <[email protected]> wrote: >> >> Hi all, >> >> I want to fit a GPS antenna on our house (the attic is being renovated and >> it just occurred to me that if I move fast I can get it done before the >> walls are closed up again!) >> >> I was planning on having it mounted on a south-facing wall but below the >> roofline - does this sound okay for picking up satellites? It can poke >> above the roofline if needed as long as the mounts are on the wall (not the >> top of the roof). >> >> Is there a recommended antenna? I am planning on feeding it into an Oncore >> GPS module which will then interface to a Soekris net4501 running nanoBSD >> and ntpns. >> >> Thanks! >> >> Toby >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
