[time-nuts] frequency reference for portable operation

[gary]

http://www.evrytania.com/lte-tools/lte-cell-scanner
claims the LTE reference is good to 0.05PPM.

I can verify that 739MHz and 751MHZ are the only LTE frequencies I found 
in use in the 700MHz band in the San Francisco Bay Area.

If you want to use the software, I suggest trying 739MHz and 751MHZ 
first. Get the calibration factor, then start the search with a reduced 
"p" parameter. The initial search assumes a ppm error in the SDR of 
120PPM. However, once you get the calibration factor, you can used the 
reduced PPM parameter which substantially improves the search speed.

I haven't found a program to actually use the LTE frequency reference 
for say NTP. Maybe satcom Dave has time on his hands. ;-)