Ah yes, that makes sense now. Tnx everyone.
Date: Wed, 29 Jan 2014 22:12:03 +1000 From: a.nielsen@shikadi.net To: osmocom-sdr@lists.osmocom.org Subject: Re: Direct sampling mode frequency range?
Can someone clarify what the frequency range is in Direct sampling mode.
In direct sampling mode you can "tune" by setting the IF between 0 and 30MHz.
So can the dongle in "direct sampling mode" (with appropriate antenna connection) receive > 14.4 Mhz (Nyquist) ?
Yes, and it has nothing to do with Nyquist because the sample rate you receive is only 2MHz or so as per normal. Direct sampling mode does not capture a wider band than normal, it just uses a different method to tune the receiver. So the oscillator frequency is irrelevant, and Nyquist doesn't come into it any differently with direct sampling than with normal sampling.
Cheers, Adam.