[time-nuts] Need recommendation for GPS antenna for Oncore GPS module

Toby Riddell toby.riddell at prevtec.com
Sun Nov 4 12:57:00 EST 2018


I spotted this on Ebay, the price is very attractive and I saw this model
mentioned previously in the mailing list archives:

https://www.ebay.ca/itm/Ericsson-KRE-1012082-1-GPS-Antenna-26dBi-For-HUBER-SUHNER-Bracket-84097323/272646019498?hash=item3f7af819aa:g:US8AAOSwRUhZAIhz:rk:3:pf:0&vxp=mtr

Anyone have a manual or datasheet for it? I cannot seem to find one using
Google.


On Sun, 4 Nov 2018 at 12:41, Matthew D'Asaro <medasaro at mit.edu> wrote:

> 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 <toby.riddell at prevtec.com>
> 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 <scmcgrath at gmail.com> 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 <toby.riddell at prevtec.com>
> 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
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