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

From: 'Eric Blossom'
Subject: Re: [Discuss-gnuradio] Devices containing 4937 tuner module
Date: Tue, 7 Oct 2003 15:22:19 -0700
User-agent: Mutt/1.4i

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!


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