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The Radio Receiver and Transmitter RT-91/ARC-2 (Collins ), is a HF radio
communication equipment designed for installation in all types of Naval
aircraft. It provides reliable, preset, multichannel, two-way radio
communication, using cw, mcw, or voice. Communication may be controlled by
the pilot or radio operator, and provision is made for rapid selection among
eight preset operating channels. The Radio Receiver and Transmitter
RT-91/ARC-2 provides c-w, m-c-w, and amplitude-modulated voice signals. THE
AUTOTUNE SYSTEM The autotune system is an electrically controlled means of
mechanically repositioning adjustable elements such as switches, and
variable inductors to predetermine settings. The system employed in this
equipment consist of a motor, two singleturn mechanisms, two multiturr
mechanisms, a control mechanism, a line shaft several drive gears, and
control circuits. Eight frequency channels, with range of 2 mc. to 9.05 mc.
(2.000kc to 9.050kc), may be manually selected and loked. No tools or
external frequency-measuring equipment are required to select a channel. The
tuning controls are located on the front panel of the equipment, and a
channel – selecting switch on each remote control component. All of these
controls are common to both the transmitter and the receiver. Where the
eight channels have been preset, it is only necessary to operate a
channel-selecting switch, to the position corresponding to the desired
channel, and the autotune mechanism will automatically tune the transmitter
and the receiver to that channel. Selection of a channel is made in six
seconds or lees, at room temperature and normal voltage, and the accuracy a
repositioning is of a very high order. The transmitter-Receiver unit is
constructed of welded aluminium alloy sheet, finished inside in flat gray
enamel, and outside with a dark greenish-gray baked crystalline enamel. All
parts are adequately reinforced to withstand the vibration and handling
incident to normal service.
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Frequency
Coverage:
2 to 9.5 MHz in four
bands |
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