[time-nuts] Why/when did cell towers switch to 15 MHz?

[Hal Murray]

> Who said 10Mhz was a standard? If it was all ham radios would have a
> 10 Mhz input to replace the internal reference. 

I was thinking of de facto standard rather than official/legal standard.


Both the Z3801A (and more recent HP/Spectracom units) and the Trimble 
Thunderbolt have 10 MHz outputs.

All the low cost telco Rubidium boxes I've read about have a 10 MHz output.

Lots and lots of lab gear uses 10 MHz, both in and out.



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