By the letter of the law all 72 mhz on FM has to be narrow band; the FCC required that when they wnt to the 50 channels. If the radio is in good condition use it. I got a present last Sunday at the hobby shop; I walked in and sitting in the used pile two 6C radios FM with Kraft FM recievers $20 for both. I have a Futaba 9C but I collect the krafts and have 8 narrow band radios and I wish I had more.