Re: [Discuss-gnuradio] Some nice HUM

2005-02-22 Thread 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 U

Re: [Discuss-gnuradio] Some nice HUM

2005-02-22 Thread Eric Blossom
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 se

Re: [Discuss-gnuradio] Some nice HUM

2005-02-22 Thread mgray
Some NBFM voice signals also include a sub-audible tone for squelch control. These are typically in the range 67Hz to 255Hz. You might be hearing these. >From additional information: http://www.eecis.udel.edu/~dra/pl.html On Tue, 22 Feb 2005, James Cooley wrote: > Hi all, > > OK, Got FM r

[Discuss-gnuradio] Some nice HUM

2005-02-22 Thread James Cooley
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? This is not 60Hz, but, purely guessing here, it *could* be 120Hz. Could this be an image of the 60Hz somehow? Also, how do I get ri