I'm actually doing a FM receiver with an antenna linked to an USRP N210 and demodulate it.
I have two channel: one with delay and one without.
I set my delay in seconds (samp_rate*sec) and everything is working fine, I hear both the delayed signal and the "real" time signal. I can set the variable "sec" to 10,20 to have a 10 or 20 sec delay, it work well i hear both signal.
I'd like to increase the delay when the simulation is running, so instead of setting "sec" as a variable I did a range block to increase second per second the delay (it start with 1 second delay).
The thing is that it work well until sec = 3, when I reach this point both signal stopped like they've frozen, can't hear them anymore even if I move the range sec cursor to 1,2 or anything (note that GNU radio isn't freezing)...I thought maybe that was due to "users have had issues when delaying by very large numbers" on the delay's wiki but when I'm setting the delay to 10, 20 secs before starting my simulation, the delay work perfectly.
But each times I want to increase the delay during the simulation , at the third iteration (sec=3) both signal are gone, gnuradio isn't freezing or bugging since I can keep moving the cursor of the range block, does anyone know what I'm doing wrong ?
My graph is below.
