A Roving microphone is another name for a wireless handheld microphone, and they can be found at events throughout the country.
This version from Audio Technica is completely compatible with their 2000 series lapel mic, and is available for use either on the license free Ch70, or, with a license on Ch 38.
We have found them very forgiving and even when carried past a PA Speaker by the presenter they do not produce feedback.
You can have a mix of lapel and roving microphones in your wireless microphone systems up to a maximum of 4 on Ch 70, and up to 10 microphones on Ch 38.
You can either manually tune the receiver channels or use the channel scan function.