Quindar Tones: Those iconic NASA PTT confirmation beeps
by Thomas from The SWLing Post on (#544TA)
Yesterday, my family watched the successful launch of the NASA Demo-2 SpaceX Dragon via YouTube. As astronauts Robert Behnken and Douglas Hurley communicated with Mission Control, we heard PTT confirmation beeps after each transmission. Those beeps, of course, reminded me of past NASA missions and those iconic confirmation tones we heard in audio from the [...]