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Re: [Discuss-gnuradio] Parameters for USRP (motherboard only) FM receive

From: Shane Clark
Subject: Re: [Discuss-gnuradio] Parameters for USRP (motherboard only) FM receiver
Date: Tue, 19 Jun 2007 16:10:53 -0400

On 6/19/07, Tarun Tiwari <address@hidden> wrote:
Hi Shane,

On 6/19/07, Shane Clark <address@hidden> wrote:
> Hi,
> I'm trying to setup the USRP to receive and demodulate an FM signal at
> 175kHz. I have based my code on the wfm_rcv... examples, but I always
> get a "no suitable daughterboard found" error. I do not understand all
> of the parameters that I am setting on the USRP so I was wondering if
> anyone could explain them or point me to a resource on this.

Which daughterboard are you using?

> Basically, I know that I want the frequency to be 175kHz and I have
> gotten this to work with transmission, so I assume that's valid. I am
> more or less lost on decimation, interpolation etc.
> Any help is appreciated.
> -Shane


> _______________________________________________

I am using the DBSRX board. I have actually gotten the receiver
working more or less through trial and error, but I have yet to do the
FM demodulation in Python.

I put something together in GRC that uses USRP -> NBFM receive ->
file_sink, but I just accepted the default values as I do not
understand the meaning of the NBFM block's parameters.


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