GHS 11 allows full function of your compatible VHF radio from a remote location. There are no complex components, just a simple design that includes soft keys, a 2 Inch diagonal dot matrix display and a coiled cable that stretches from about 1 Feet to nearly 5 Feet. A rotary and push knob for volume, squelch and channel selection makes it easy to use with a dedicated button for access to channels 16/9. All buttons and knobs resemble those of the VHF radio. In addition, GHS 11 features a microphone that has intercom capabilities when connected to a speaker.