[Discuss-gnuradio] fsk_tx.py - transmission frequency

[Michael Ford]

I'm looking at the following code:

http://www.koders.com/python/fidA197012A520F0CE96AE6C6A41D559B9E2A5A8D63.aspx

and if you look at line 72, you'll see:

u.set_tx_freq(0, options.cordic_freq)

However, when I look to see what that cordic_freq is, I see that the default is 29.32e6 (Line 19). I thought that the 2400 was supposed to communicate from 2.3-2.9 GHz. The comment for set_tx_freq() in usrp_standard.h says that the frequency argument for set_tx_freq() has to be set from [-44M, 44M]. Even more confusing is that when I tune the receiving USRP board to 
2.4GHz, I get a high reading. How can I determine what center frequency the transmitting board is actually communicating at?