I'm considering a Starcom unit for the bike. It's my understanding that they are VOX (voice activated). My question is, why the need for a PTT(push to talk)?Also, with the PTT, do you need to hold the switch throughout the conversation?
Going by memory here but...
Not sure if you're looking at Starcom Advance or Starcom Digital, but both do have VOX.
Both Advance and Digital have adjustable VOX. You can go from "off" to virtually always "on", and several levels between. Advance uses an analog adjustment so you get virtually infinite level of the VOX adjustment. The Digital has four adjustment levels.
The VOX on both units work on the music, as well as the bike-to-bike radio. So when you talk with your passenger, it will mute the music. The Digital has adjustable levels of muting, I don't recall if the Advance does.
The Digital allows the PTT to work in two different ways - "latch" or "push". The "latch" is push once to turn on, and push a second time to turn off. The "push" option requires you to hold the button down while talking. I'm pretty sure that the Advance does not have this option.
For what its worth, we don't use the VOX at all, we just talk over the music. Works fine for us. And I wouldn't consider the VOX for bike to bike, but that's just me.