[time-nuts] 10 MHz 'failover' switch?

Bob kb8tq kb8tq at n1k.org
Thu Jul 26 16:13:36 EDT 2018


They are a pretty rare item. A more common approach is a disciplined oscillator that 
will do failover on it’s inputs. That’s still a rare item, but at least a possible thing to find. 
The equally big problem will be getting doc’s on one if you do find it….


> On Jul 26, 2018, at 2:45 PM, W7SLS <w7sls.scott at gmail.com> wrote:
> Hello,
> Looking for recommendation for a ‘failover’ or ‘redundant’ switch for 10 MHz distribution.
> 	Not really sure of the correct term.
> 	Something that sensed RF on primary 10 MHz, and then switched to secondary on fail of primary.
> A brief search showed several very nice $$$ items, suitable for commercial applications,
> but I wonder if there are some “last year’s” (but not last century) versions that would work for a home lab.
> Context:
> I have a GPSDO and a Rb source of 10 MHz.  
> The power supply on the GPSDO failed (worked enough to light up the GPSDO, but not enough to lock).
> I have a new power supply on order, but would be nice to have “insurance”.
> Thanks in advance for the group bandwidth.
> Scott
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