Handheld Interface Terminal

Users operating Manpack Radios have a number of limiting factors to contend with the most obvious is the lack of, in many radios, facilities to provide remote operation of the radio’s capability. Typically  to control functionality such as Channel, Power adjust or calling capabilities, the operator will have to stop to access the front panel of the radio or request another to assist. This situation can become dangerous as it makes one or both personnel vulnerable. The Handheld Interface Terminal (HIT) has been developed to overcome this potential problem allowing a single operator to both use and functionally control the radio whether covertly positioned or on the move.

The HIT attaches to the GPIO port of the radio and through the command structure software accesses the radio’s functionality. The terminal has a keypad and LCD through which the radio operator can change the radio to suit the requirement, view the changes and also control messaging and Selcall functions without compromising himself or fellow personnel. The HIT is accommodated in a magnesium alloy rugged handheld box that can withstand harsh environments and is small enough to be located either on the person (clip) or stored in a convenient pocket. The HIT does not provide access to the audio send, receive and PTT functions as this will be achieved via the handset or headset; however, the HIT can control the received volume of handset or headset.
      

Features and Capability

• Layout similar to mobile phone layout for ease of operation
• The LCD is 4 lines by 20 characters so that 80 character messages can be received should the message be longer the forth line will scroll the remaining characters
• Keypad with alpha-numeric keys and function keys  
• A DC 30 filter can be fitted that enables both naked eye and NVG viewing

Functionality

• Log in first time
• Log in subsequently - automatic
• Selcall (Transmit and Receive)
• Pagecall Messaging (Transmit and Receive)
• Frequency Hopping on/off
• Encryption on/off & Encryption key select
• Digital Signal Processing on/off
• Scan on/off
• ALE on or off– as the radio has a vast ALE capability the HIT can provide access to a subset of the ALE set up on the radio
• Channel up & Down
• Mute | Selcall | voice | off
• Volume UP and Down
• Output power selection
• Radio temperature SWR RSSI and power indication