Forum: GNU Radio frequency drift of WBX

Hi,
    I wanna know the frequency drift of WBX daughterboard.I think it may
depend on the stability of WBX oscillator.How can I calculate it?
Thank you.

Hi,

The WBX frequency stability is determined by the accuracy of the USRP 
clock
signal.  For example, the USRP2 has a 100MHz internal clock which can be
locked to a 10MHz external source such as GPSDO for better frequency
stability.

See the following url for more info:

http://gnuradio.org/redmine/projects/gnuradio/wiki...

GSM base stations have very accurate GPS disciplined clocks in them and
'Kalibrate' allows you to measure your device's frequency stability by
using a mobile base station as a reference. Link below:

http://ttsou.github.com/kalibrate-uhd/

Cheers,

Mike
M0MIK