Over the last few years my wife and I have taken several road trips and I have had APRS VoiceAlert running on my radio looking for some simplex QSOs. Occasionally I will hear a 100 Hz PL packet pop through my radio and when I pick up my mike to attempt to call that station more than once I get no responses back. Either the originators of these transmitted signals have their receiver’s volume turned all the way down or they are transmitting APRS packets with the 100 Hz PL tone without understanding the VoiceAlert concept. I have only been able to initiate a few simplex QSOs this way. I guess the APRS VoiceAlert concept has really died off which is too bad because it is really a clever idea. Any thoughts?