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Re: [Discuss-gnuradio] DBSRX filter efficiency?
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] DBSRX filter efficiency? |
Date: |
Mon, 18 May 2009 10:01:29 -0700 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Mon, May 18, 2009 at 12:08:01PM +0200, Andreas Bogk wrote:
> Dear Gnuradio hackers,
>
> I have problems with the DBSRX module of the USRP: I see GSM on all
> frequencies. I hope somebody can answer my questions: Is there an
> antialiasing filter somewhere in the design? If so, what is its nominal
> efficiency? Where can I find data sheets for the MAX211x chips?
>
> Thanks in advance,
> Andreas
Hi Andreas! Welcome!
Try turning the Rx gain down.
The datasheets should be on Maxim's site, though I think they're
discontinuing the part. If you can't locate them, let me know and
I'll see if I can't find one for you.
Eric