Re: [Discuss-gnuradio] UHD query PPS

2010-05-23 Thread David Evans
Maybe I misunderstand how to synchronise... if I have two usrp2s, and I do a set_time_next_pps(), there is a chance that the pps could occur after the first call, so the second call will set the second usrp a second later. I would need to know when there is a pps or seconds transition prior to

[Discuss-gnuradio] Ethernet and bursting

2010-05-23 Thread Charles Irick
Hi, Im trying to understand a little more about the Ethernet communication model used for GNU Radio. I notice that the frames have start of burst and end of burst flags. Is this related to sending Ethernet frames? How many frames can be sent in a single burst? If these are not related to Ethernet,

Re: [Discuss-gnuradio] BBN 80211b Transmitter with GNURadio 3.2.2 and USRP1

2010-05-23 Thread Doug Geiger
George, The latest versions of GNUradio no longer use omnithreads - I believe everything the used them has switched over to using boost threads. I'm not sure what portions of the BBN code use threads (I suspect there is a watcher thread checking the message queue from the PLCP for received pa

Re: [Discuss-gnuradio] output is all 0 in howto_square_ff::general_work()

2010-05-23 Thread Mir M. Ali
The scheduler chooses the amount of data to process each time. Here it chose 4 the first time it ran the general_work() function and the next time it chose 1. You can look into the scheduler's implementation to know how it chooses this. If you want to make it choose 5 the first time then you can ca

[Discuss-gnuradio] Antenna for WBX?

2010-05-23 Thread Omid F
Hi, I am not sure which of LP0410 or Vert400 to order with WBX? My application is creating a two-way communication between two USRP2s equipped with WBX over the unused TV frequencies. Thanks, Omid ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.

Re: [Discuss-gnuradio] Need help with gr how to create a signal processing block template

2010-05-23 Thread Tom Rondeau
On Sat, May 22, 2010 at 5:52 PM, Nick.R wrote: > > I am quite new to unix as well as GNU radio, but after practising with the > different modules and reading alot about it in papers and tutorials I've > been able to understand how to use some of its functions. Presently I am > trying to make a blo