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Re: [Discuss-gnuradio] Spectrum of RFX1800


From: Matt Ettus
Subject: Re: [Discuss-gnuradio] Spectrum of RFX1800
Date: Wed, 18 Feb 2009 10:24:17 -0800
User-agent: Thunderbird 2.0.0.19 (X11/20090105)


Yes, that spectrum looks correct.

Matt

Fabian Uehlin wrote:
Hello!

I have an USRP with two daughterboards (RFX1800) using an external clock (with 64 MHz).

Running
# usrp_siggen.py -T A -f 1819.4e6

shows me the spectrums:
http://ud05_188.ud05.udmedia.de/gnuradio/nah.PNG
http://ud05_188.ud05.udmedia.de/gnuradio/gesamt.PNG

There are several peaks near center frequency 1819.4 MHz and some others (offset ~190-320 MHz). Does the spectrum look good? I ask, because I'm not sure if the spectrum has changed since using an external clock.

Thanks & Regards
    -Fabian-


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