Responsive programmed push to talk in usrp_nbfm_ptt.py

GNU Radio
1

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