RACAL SYNCAL 2000 PRM4790 VIU VEHICLE INTERFACE UNIT ARMY MILITARY RADIO. Used item, some marks from use. Tested and in working order. This is the NON amplified VIU, Vehicle Interface Unit, for use with the Syncal 2000 PRM4790.The VIU provides a connection socket for the BCC540G Automatic Antenna Matching Unit, AAMU, not included. The advantage of the non-amplified VIU over the amplified model, is simply there is less to go wrong. This item is in the category "Mobile Phones & Communication\Radio Communication Equipment\Ham/Amateur Radio\Ham Radio Transceivers". The seller is "tomjones50" and is located in this country: GB. This item can be shipped to United Kingdom.