Ok, If you are talking about Nassau Medical Control AKA "Med Com" Nassau County is licensed to use the national Med Channels, Med 2, Med 3, Med 4, Med 5, Med 9 (most used) and Med 10. all with a PL of 162.2 ... Now these frequency's are the old one's but are still in use by ambulances that have NOT moved over to the Nassau County Public Safety Project 25 Phase II System. In that system they are called "Medcom Talk groups" 1,2 and 3 and are digital. All are listed in the RR database..... NOW "Medical Command" is something new that Nassau is setting up, where the "On scene" medical responders can talk to each other (low power) on the input freq with out going over the Nassau repeater. I am told that they will start off with using the input freq of Med Ch 4. You posted 473.075, That is the output (repeater freq) of Med 4 not the input freq.