thank you for the info I appreciate it. It’s good that we can still enjoy the hobby. Good ol Uniden 436 HP here I listen to the surrounding county’s here in south central Jones Co
Triple A was running expanded (Mississippi variant) APCO, and their own set of response codes, but that was years ago. Ex: Medic 405, respond signal 4 with fire and MHP to an 10-50 J2 at Highway 98 at 84.....
EMS may be using the IAED MPDS Signals for their radio transmissions. When they aren't using plain language and all the extraneous talk that ensues. Brevity and COMSEC are dead.