[time-nuts] GPS antenna splitter recommendation?

[Taka Kamiya]

Are you splitting power OUT OF GPSDO or are you splitting antenna into individual GPSDO?
Most, if not all GPSDO outputs power supply source to the antenna via the same connector RF signal comes in.  Simple splitters may or may not work.  There are GPS antenna splitters made for that.  HP/Symmetricon has 4 port device.
Symmetricom 58536A GPS 1x4 4-Way Active Antenna Signal Splitter Divider N Female | eBay

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Symmetricom 58536A GPS 1x4 4-Way Active Antenna Signal Splitter Divider ...

In wireless base station pplications, poor isolation can disable cell sites. DC power applied to the splitter is...
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If you shop around, you can find one for not much more than $100.  Beauty of this is, you can connect GPS to any port and only one will supply power to the antenna.  You can also daisy chain it.  I have 5 set up that way.





--------------------------------------- 
(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
 

    On Wednesday, April 29, 2020, 10:14:06 PM EDT, Frank O'Donnell <time at inkbox.net> wrote:  
 
 On 4/29/20 6:01 PM, Bob kb8tq wrote:
> Here’s a few:

Bob, thanks very much for the suggestions.

Five of the seven splitters in your list appear to offer a total of two 
output ports. What I'm looking for is one that will accommodate 
(specifically) three or four ports.

Of the remaining two on the list, this one:

> https://www.ebay.com/itm/Mini-Circuits-ZN4PD1-63W-S-RF-Power-Splitter-250-6000MHz-Qty-Available-GOOD/133387795141?hash=item1f0e883ac5:g:tdoAAOSwAbxel2o~ <https://www.ebay.com/itm/Mini-Circuits-ZN4PD1-63W-S-RF-Power-Splitter-250-6000MHz-Qty-Available-GOOD/133387795141?hash=item1f0e883ac5:g:tdoAAOSwAbxel2o~>

has five outputs and costs $50. Probably usable, though I was wondering 
if going with additional output ports could increase possible loss? And 
also, the price isn't a show-stopper but is a little high for what I was 
hoping for.

The other one:

> https://www.ebay.com/itm/New-Mini-Circuits-ZB6PD-2-S-800-2000-MHz-Power-Splitter/114155096838?hash=item1a942c8b06:g:jNIAAOSwedNedT92 <https://www.ebay.com/itm/New-Mini-Circuits-ZB6PD-2-S-800-2000-MHz-Power-Splitter/114155096838?hash=item1a942c8b06:g:jNIAAOSwedNedT92>

isn't entirely clear to me. The text says it's a three-port, but I count 
four visible connectors that look like output ports, and two more that 
might be hiding under caps. This one goes for $19.90.

Given all of that, do either of these two seem like the optimal way to 
go if I want to plug in three or four GPSDO's?

Thanks again,

Frank


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