Career Firefighter looking for options to better communications. Tried it on low priority and high priority calls and I get the reply from the dispatcher, ""Can you repeat, you were garbled..."" I've tried adjusting the neck microphones and nothing seems to change. I can hear myself on the truck's radio and I think I sound clear, but anytime I use it, no one else can understand me. In addition, the earphone volume isn't very loud. Unless I plug my open ear and try and block out every other sound, I can't hear anyone transmitting very loudly.