Re: [Discuss-gnuradio] Some nice HUM

[James Cooley]

Found the source. Silly me.

Actually, I'm running an auxiliary little LCD display off of the i2c 
bus. That was it. Probably bad decoupling on my part.

-jamie


Eric Blossom wrote:

> On Tue, Feb 22, 2005 at 02:20:12PM -0500, James Cooley wrote:
>  
>
> > Hi all,
> >
> > OK, Got FM radio and FM stereo to work using USRP + Basic RX + microtune 
> > 4937 frontend.
> >
> > I'm hearing a nice hum along with whatever I tune into. Anyone else?
> >
> >    
>
> You shouldn't be hearing any hum.
>
> I use a similar setup all the time with no hum.
>
> Look at the output of your 4937 board with an o'scope and see if the
> hum is visible there. 
>
> Bad or missing ground someplace?
>
> Eric
>
>