[time-nuts] GPSDO 10MHZ Splitter

[W7SLS]

A couple of ideas:

Make one:

	Several hours and a few $  (cheap if you value your time as free)
		agree, not a lot of isolation between the outputs
	Case, connector, and three 16.67 ohm resistors
	in —> 16.67 ohms —> 16.67 ohms to output 1
                                       —> 16.67 ohms to output 2

	Ref:  https://www.markimicrowave.com/blog/how-to-make-an-n-way-power-splitter/
	
Perhaps free (may or may not work):

	Television 75 ohm splitter
	agree, mismatch between 75 ohms and 50 ohms
	agree, ugh to F connectors

	Ref: I don’t know if this just occurred to me, or if I read it (e.g., on this group)

Buy one:

	Example: Mini-Circuits ZSC-2-1+, about $50 new
	https://www.minicircuits.com/WebStore/dashboard.html?model=ZSC-2-1%2B <https://www.minicircuits.com/WebStore/dashboard.html?model=ZSC-2-1+>

Gulp:

	Your mileage may vary
	BNC-T connector

As mentioned elsewhere:

	Legacy RGB distribution boxes (e.g. Extron), about $40 on auction sites
	Yes, they are 75 ohms, but may be fine, or you can change the internal resistors to move to 50 ohms.

And of course there are other ($$$) solutions.

(Obviously) I defer to the wisdom of the group (and perhaps groans and eye rolls).

Best of luck, whatever you choose.

Scott
W7SLS


	

> On Jun 21, 2019, at 7:27 AM, Don Meadows <donmeadows07 at gmail.com> wrote:
> 
> Is there an easy, and cheap way to add a splitter the 10Mhz signal 
> from GPSDO, without going to a distribution amplifier to
> feed two different devices?
> 
> I really don’t want to build a complicated project, or 
> spend $200.00 dollars for an 8 output distribution amp
> off the net.  One output would be dedicated for my
> counter time base, and the other would be an ‘extra’ 
> 10MHZ source for another counter, or just to display on the scope.
> 
> I don’t have a GPSDO yet, I just can’t decide on one.
> I am leaning to the Trimble, but it’s still undecided.
> 
> Could anyone comment on buying a “Refurbished by Seller”
> GPSDO on E-bay. They are a few dollars cheaper, but I really
> want one I can have trust and confidence in.
> 
> Sorry for the long post.
> Thanks, Don
> 
> 
> 
> Sent from Mail for Windows 10
> 
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