[time-nuts] Signal Hound

[Jim Lux]

Inexpensive USB spectrum analyzer.. http://www.signalhound.com/

I think it has the ability to capture raw samples, too. (the BB60 
definitely does.)  They have a 10MHz ref input.

The spectrum analyzer has a phase noise feature
Phase Noise Plot
: Displays the phase noise amplitude, in dBc/Hz, vs. offset from carrier 
when checked. You must have a span of 10 KHz or less, and the signal 
should be within 1 division of the reference level (e.g. within 10 dB). 
This utility takes about 1 minute to run. It will sweep several times, 
then combine the sweeps into a phase noise plot. The data is approximate 
and is limited by the phase noise of the SignalHound itself. For best 
closein phase noise, use an external 10 MHz reference with > 10 dBm 
power level. To resume normal operation,click "Phase Noise Plot" a 
second time to uncheck.


Anyone fooled with one?  Think it might work as a low cost part of a 
phase noise test set.