Forum: GNU Radio TVRX IF frequency

Announcement (2017-05-07): is now read-only since I unfortunately do not have the time to support and maintain the forum any more. Please see and for other Rails- und Ruby-related community platforms.
F9da0bcbc4aa89fab9224b8b8777e41a?d=identicon&s=25 melanio (Guest)
on 2007-06-28 10:34
(Received via mailing list)
In data sheet of Microtune 4937 DI5, the IF frequency of a tuner comes
to 5.75MHz.

But according to it directly measures(pin17,18) with spectrum analyzer,
IF frequency is 44MHz.

Moreover, DDC values comes out to -20M if '' is carried out.

So the ADC is 64MSPS, I don't know why DDC is -20M and why IF frequency
44MHz.. is it possible figure?


Sang-Won Kim @Cognitive Radio Research Team

Tel  : +82-42-860-4850   Fax : +82-42-860-5199

email :  <>
This topic is locked and can not be replied to.