If you need a very simple little VHF or UHF radio this is a pretty good choice. Operation can't get any simpler and the programming software is super easy. It is 16 channels with no scan, 15 channels if you want scan. The 16th becomes the scan option. When you set it for scan and turn the channel knob to 16 it scans all channels. Uses the normal SMA antenna connection, LMR orientation. This is HYT's 500 radio relabeled by Blackbox. HYT also makes many of the radios labeled Relm and Relm / BK.