I am installing a Midland MXT500 in my vehicle. I will primary be using the 50w GMRS simplex channels (15-22). My question has to do with wide or narrow band. I will at times be communicating with people that have "Big Box Store" GMRS radios.....i.e. Midland, Cobra, DeWalt, etc. Does anyone know if these walkie talkie types are generally wide or narrowband on channels 15-22? I can set my MXT500 either way but I want it to be compatible with what everyone else has.