I have a pair of SMH-10s and they work great. I can use them on my ultralight and motorcycle. The problem I come across on the ultralight is that the engine itself is so loud, you can’t hear using the intercom. Is there anyway to turn on the noise canceling for the intercom microphones, like it is when talking on the phone? I’ve talked to people on the phone while flying and they think I’m at home on the couch. I notice this while on the motorcycle, but it’s not as noisy as the ultralight.