[time-nuts] Re: GPS Splitter for L1, GNSS, etc?
Michael Klimenko
mklimenko29 at gmail.com
Wed Jun 2 07:20:19 UTC 2021
Hello Scott,
Currently, I'm using the Mini-Circuits ZESC-2-11+ power splitter for the
GNSS receiver development, they're around $80 brand new, probably you may
find them used for less. Bear in mind that they pass DC, which is good for
powering the antenna, but may have some unexpected behaviour when two
receivers will try to power each other, so grab an inline DC blocker as
well.
Sincerely,
Michael
On Wed, 2 Jun 2021 at 07:22, W7SLS <w7sls.scott at gmail.com> wrote:
> Hello,
>
> Looking for group wisdom to avoid newbie mistakes with a GPS splitter.
>
> For context, Iâm a home- not National- or University-Lab.
> That said, I have a non-zero budget.
>
> Today:
> Antenna
> 1- CORS RTK GNSS Survey Antenna high gain measurement GNSS GPS
> GLONASS BDS <https://www.ebay.com/itm/253786590956>
> 2 - patch antenna - works really well with Time Hat, even a few
> meters way from window
>
> Splitter
> 1 - Symmetricom 58536A
>
> Devices
> 1 - Auction Site GPSDO
> 2 - Leo Bodnar GPSDO
> 3 - Time Hat <â wow! a fan!
> 4 - (on the way) 2nd Time Hat
>
> Site
> - suburban, forest to the S, hill to the N
>
> Challenge:
>
> Existing splitter is L1 only (I think), which blocks the many
> newer GPS satellites.
> With my compromised (for GPS) location, thatâs not so good.
>
> I need / want a wider band GPS Splitter
>
> 1 - some posts talk about removing the bandpass filters in an
> existing splitter
> OK, but (a) it nukes any value of that splitter, and (b)
> those filters also eliminate other interference (yes?)
>
> 2 - new choices seem to be in the $1000 and way above, outside of
> my budget
>
> 3 - more interested in âready to useâ than âhave to add on
> bypasses' to power the antenna (e.g., Cable TV splitter)
>
> 3 - auction site has numerous options, but Iâm not sure how to
> 'separate wheat from chaffâ
>
> LOL, some of you may be the sellers :)
>
> several items $500+ <â more than I want to spend
> several items $30 - <â Iâd rather not get aTV antenna
> splitter and a hobby to make it work
>
> 324575653743 GPS Source S14 $175
>
> 153359161105 GPS Antenna Splitter GPS/GLONASS L1 GALILEO
> E1 BEIDOU B1- FedEx Fast Ship SV1AFN $120
>
>
> Thoughts? Thanks for the group bandwidth.
>
> Scott W7SLS
>
> PS: yes the Symmetricom 58536A will be for sale after I replace it.
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