Re: [Discuss-gnuradio] Devices containing 4937 tuner module

[Alan Gray]

I can confirm that using bandpass sampling with the Microtune 4702 modules 
(which have 8MHz of bandwidth at an IF of 36MHz) works perfectly. I've just 
submitted the schematics and code required to use this tuner to 
address@hidden   so that should be integrated into CVS soon

As a side note, is there any reason that the I2C communication functions 
should return that the write operation has failed when in fact is has not? 
(I know that the write has been successful, as the tuner is tuned to the 
correct frequency, however I always get the message saying that it has failed)

Alan


At 03:22 PM 7/10/03 -0700, 'Eric Blossom' wrote:

> On Tue, Oct 07, 2003 at 06:21:21PM -0400, Ben Gelb wrote:
> > Hi Eric,
> >
> > I agree that it is a very wise idea to look for another tuner, since
> > this module is being phased out. I learned today that the low IF was
> > once required for DOCSIS compliance, but is no longer. Therefore modules
> > with an IF in this range will pretty much cease to exist. So some
> > circuit will need to be designed to mix a 44 MHz IF down to 5 or 6 MHz.
>
> ... or just use band pass sampling.  No need to down convert if the
> sample and hold on the A/D is fast enough.
>
> > As I am using GNURadio as the subject of study for my senior research
> > project this year in high school, I wanted to see if I could emulate the
> > hardware that has already been tested so that I don't have to devote
> > large amounts of time to making the hardware work. I am unfortunately, a
> > little bit limited by time.
>
> Understood.  Good luck!
>
> Eric
>
>
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