[Discuss-gnuradio] Responsive programmed push to talk in usrp_nbfm_ptt.py

[mario behn]

Hi,

I wonder what is the easiest way to implement an automatic responsive
push to talk?

1. while I'm in receive mode, I would like to sense if there is a signal,
2. If this is the case I would like to transmit a predefined signal
for a set time frame.
3. I would also like to cycle throuht 4 set frequencies in time.

With kind regards

Mario Behn