The Motorola device has no NMEA output, but can
produce 2.5, 5, 10,
12.5, or 25MHz reference frequencies depending on jumper settings inside
the box.
I wish I had a use for them. Right now they're
just another piece of
the junk piled up in my garage. I use the NTP-syncronized clocks in
my computers as my primary time reference because they're on all the
time anyway.
Not so useful as a time reference but you could use it as a frequency reference
for a microwave station, a beacon or a repeater.
Rob