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Re: [Discuss-gnuradio] Sample Rate
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From: |
Eric Blossom |
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Subject: |
Re: [Discuss-gnuradio] Sample Rate |
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Date: |
Mon, 28 Jan 2008 11:32:48 -0800 |
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User-agent: |
Mutt/1.5.17 (2007-11-01) |
On Mon, Jan 28, 2008 at 09:43:13AM -0600, Richard Jaeger wrote:
> I have been playing with a number of the examples - FM NB and WB receivers,
> AM receiver, etc.
> The sample rate appears to default to 64 MSPS, but I have been unable to
> find where that default rate is set.
> Where is it defined? Can it be changed from the examples themselves?
>
> For example, 64MPS is not a proper subsample rate for the FM broadcast
> band.
> It results in aliasing and should be reduced.
>
> Dick...
It's not settable, but is determined by the master oscillator on the
USRP. If you're using the Basic Rx or LF Rx daughterboards, yes you
will need some kind of preselector. If you're using one of the RFX or
TVRX boards, the 64MS/s sample rate won't be a problem.
Eric