[time-nuts] Thanks! // Re: GPS Splitter for L1, GNSS, etc?

[W7SLS]

hello,

Thanks for the many informative replies to ‘yet another splitter question’ :).

I chose to buy a pre-made splitter, that I learned about from a message off-list:

	https://www.sv1afn.com/en/gnss-gps/-7.html <https://www.sv1afn.com/en/gnss-gps/-7.html>

Once again, thank you!

Best Regards,
Scott W7SLS

> On Jun 2, 2021, at 8:32 AM, paul swed <paulswedb at gmail.com> wrote:
> 
> Thats why the satellite splitters are nice they have the blocking
> capacitors built in with diodes to forward the highest voltage to the
> antenna. But lots of great ways to solve the problem.
> Paul
> 
> On Wed, Jun 2, 2021 at 11:23 AM Michael Klimenko <mklimenko29 at gmail.com>
> wrote:
> 
>> 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, I’m 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 <— 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, that’s 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 ‘ready to use’ than ‘have to add on
>>> bypasses' to power the antenna (e.g., Cable TV splitter)
>>> 
>>>        3 - auction site has numerous options, but I’m not sure how to
>>> 'separate wheat from chaff’
>>> 
>>>                LOL, some of you may be the sellers :)
>>> 
>>>                several items $500+  <— more than I want to spend
>>>                several items $30 -   <— I’d 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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