Vehicular Adapter Accessory, Hand Held Control Head. Allows customers to adapt XTS3000 or XTS3500 portables for mobile operation, and provides in-vehicle radio battery charging. It's powered by attaching its supply cable to the 12 volt battery inside a police car, utility truck or other vehicle. Connectors are provided for the vehicle antenna, mobile microphone and optional amplified loudspeaker (HSN1000A). There is also a general interface connector for additional accessories. A color LCD indicates battery recharge status. For XTVA operation, a microphone and RF switch (NTN8327A) are required. The required mobile microphone and optional loudspeaker allow for operation of the portable radio that is similar to operating a mobile.