Examples of the squelch block include http://www.ece.uvic.ca/~elec350/grc_doc/ar01s01s03.html and http://files.ettus.com/tutorials/labs/Lab_1-5.pdf
I've never used timed events in gnuradio, I just know that you can do things in a time-aligned way. You may want to google for "gnuradio squelch" and "gnuradio timed" Out of curiousity, why do you need to handshake? What's wrong with a little bit of silence or noise at the beginning and end of your recording? On Wed, Jun 10, 2015 at 3:02 PM, Surya Agam <[email protected]> wrote: > Would you mind to tell me how? > I have no idea. > > On Thu, Jun 11, 2015 at 4:54 AM, Chris Kuethe <[email protected]> > wrote: >> >> Maybe use a squelch block and wait for for received power to exceed >> some critical level? Or use timed events? >> >> On Wed, Jun 10, 2015 at 1:47 PM, Surya Agam <[email protected]> >> wrote: >> > Hello everyone, >> > >> > I try to transmitting a file using PSK modulation with 2 x USRP B200 as >> > Tx >> > and Rx. When I run the Tx's fg, the Tx only transmitted before the Rx fg >> > completely run. But when I run the Rx's fg, the file sink already write >> > something before I run the Tx's fg. Is there any way to both Tx and Rx >> > "handshake" before transmission started? >> > >> > -- >> > Sincerely, >> > >> > Surya Agam >> > University Al Azhar of Indonesia, Jakarta >> > >> > _______________________________________________ >> > Discuss-gnuradio mailing list >> > [email protected] >> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > >> >> >> >> -- >> GDB has a 'break' feature; why doesn't it have 'fix' too? > > > > > -- > Sincerely, > > Surya Agam > University Al Azhar of Indonesia, Jakarta -- GDB has a 'break' feature; why doesn't it have 'fix' too? _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
