[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Discuss-gnuradio] Frequency Offset

From: Josh Blum
Subject: Re: [Discuss-gnuradio] Frequency Offset
Date: Tue, 01 Sep 2009 19:18:02 -0700
User-agent: Thunderbird (X11/20090817)

Eric Blossom wrote:
On Wed, Sep 02, 2009 at 09:14:52AM +0800, fangming he wrote:
Hi, all

I set the frequency of USRP to be 910MHz, but I noticed that
the central frequency of the signal is 914MHz. Why there is 4Mhz frequency 
I also found that there is also a signal comeing up in 896Mhz. The amplitude of
the signal in 914MHz is 20dB higher than the amplitude of the signal in 896Mhz.

Did you call u.tune(..., 910e6, ...) to set the frequency?

Thats news to me! The grc generated code here just calls set lo.

The temporary solution would be to create a gui control for the frequency and to change the frequency at runtime. This will cause u.tune(...) to be called.


reply via email to

[Prev in Thread] Current Thread [Next in Thread]