In these VHF FM Transceivers has 207 memory channels which are 200 regular channels, 6 scan edges and 1 call channel. Used the BTL (bridge-tied load) amplifier in the IC-V80/E that doubles the audio output. The speaker has 36mm so it large and delivers 750W of loud and intelligible audio. Powerful 5.5W of output power will work to get your message through. It has BNC types connector and included repeater lockout and busy channel lockout and other useful functions for the user. To be easy for using, we described detail instructions and other information in the images. If you want to buy our products, you can ask via chat box or sent the inquiry via contact supplier.