Re: [Discuss-gnuradio] An interesting application for my new USRP... some input requested

2005-05-24 Thread Larry Doolittle
John - > Actually, over these time intervals GPS wouldn't be as accurate as my > local references I guess you have better local references than I do. :-( > I snipped your earlier comment about the data stream, but are you > suggesting just capturing a single wide data stream instead of four

Re: [Discuss-gnuradio] An interesting application for my new USRP... some input requested

2005-05-24 Thread Larry Doolittle
John - > [chop], there > will be three or four signals, on different frequency bands (near 3.58, > 7.08, 14.08, and 21.08 MHz). The signal will be an unmodulated carrier > (well, there will be some CW identification) and will be transmitted for > about 10-15 minutes. > > It seems to me that

Re: [Discuss-gnuradio] An interesting application for my new USRP... some input requested

2005-05-24 Thread John Ackermann N8UR
Larry Doolittle wrote: [ snip ] In principle, you could dedicate a second channel to recording the GPS band, and extract near perfect frequency calibration from that. Unfortunately for your time-frame, GPS reception in itself is a serious project that has not been fully solved by the GNU Radio c

[Discuss-gnuradio] An interesting application for my new USRP... some input requested

2005-05-24 Thread John Ackermann N8UR
Well, it didn't take long for me to think of a use for the USRP I acquired from Matt at the Dayton Hamvention. About six months from now, there will be a ham radio frequency measuring test where the challenge will be to measure, as accurately as possible, the frequency of a signal broadcast in