Northern Airborne Technology THxxx - Manual (Page 15)

SM06 Rev. 4.10 Tac/Com Control Head Manual
1.3
Purpose of Equipment
The Tac/Com series of control heads provides a centralized location for tactical radio
control and channelling of up to four independent transceiver systems. Only the
Tac/Com II series will be considered; for further information, contact NAT Ltd.
Alphanumeric labeling of each radio channel is provided, as well as a display of receive
and transmit frequencies, to ease pilot identification of the selected channel on each
radio.
At the Tac/Com (master) control head, individual radio receive volume and radio power
on/off status can be controlled. Individual radio functions can also be set, such as
scanning, tones, simplex/duplex, TX power and others. Annunciation is provided for TX
and RX activity on a per transceiver basis, and the main display can be set to show the
channel name (alphabetic label), the receive frequency and tone data, or the transmit
frequency and tone data for all radios via the general control group.
Radio
Controls
General
Controls
TH250 Control
(2 Radios, 256 Total Channels)
Within the control head, individual radio interface cards translate the control head
commands into suitable channelling data for each specific type of radio connected.
Software controlling these functions, as well as the built-in help screens for control head
operation, is located on the main control head CPU board and can be easily replaced to
upgrade or improve control head functions.
The software of the control head's computer can emulate many types of parallel tuned
radio controls and this allows the Tac/Com system to directly replace many existing
controls such as the C-960, C-961, C-962A, C-722A and C-1000. In addition, since the
Tac/Com control allows control of up to four simultaneous radio systems, the single
Tac/Com control can replace up to four individual controls, with a substantial reduction
in cost and panel space. The following diagram illustrates a system that shows this
multiple radio capability using NAT NT-series agile transceivers. Any combination of
radios could be used by installation of the appropriate interface cards within the control
head. In the example below, an accessory DTE12 is used for DTMF tone generation
and direct keyboard data input to the TH450.
Jan 4, 2006 Page 1-5
ENG-FORM: 800-0108.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.