Re: [Discuss-gnuradio] N1Bt software board and front end design

[Eric Blossom]

On Sat, Oct 22, 2005 at 12:25:50PM +0300, Gituma Nturibi wrote:
> Greetings  to all GNU radio enthusiasts.

Welcome!

> Is there anybody out there who has created an FM or even AM front
> end from components? I would really like to get some info on that.

The basic problem is getting the samples into the computer.  A
broadcast FM signal is about 100 kHz wide, so you need to sample it at
at least 200 kS/sec.  That's wider than you can do with most audio
cards, so you need a different solution.  Hence, the USRP.

Chuck Swiger has built some simple front ends for MW AM.  I believe
he's using them with a Basic Rx daughterboard, but they should work
with a bit of tweaking with whatever else you've got.

> Thanks for the support and keep up the good work on the open source 
> front

You're welcome.

> Gituma Nturibi,
> Aspiring Engineer