Direct sampling mode frequency range?

Richard Koch n1gp at hotmail.com
Tue Jan 28 23:50:08 UTC 2014


Can someone clarify what the frequency range is in Direct sampling mode.

The rtl2832u dongle has a 28.8Mhz osc. 

So can the dongle in "direct sampling mode" (with appropriate antenna connection)
receive > 14.4 Mhz (Nyquist) ?

Googling I find conflicting advice.

I've been able to receive > 14.4 Mhz in direct mode, but I'm not sure if
that's due to some non-optimal method...?

I'm guessing it can because the tuner chip provides both I & Q data therefore
allowing the double rate...?



 		 	   		  
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