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The Radio Set AN/ARR-15 R-105 has been designed for installation in all type
of Naval aircraft.The purpose of the equipment is to provide reliable,
preset, multi-channel, voice, cw, and mcw, pilot or radio operator
controlled reception.The audio output is cosistent at 500milliwatts maximum
with avc and noise limiter action. With r-f inputs of 10 to 10,000
microvolts, 30 per cent modulated, the output will contain 15% or less
distorsion. The audio responce does not vary more than plus or minus three
db relative to the response at 1000 cps for modulation frequencies of 300 to
3500cps. The maximum attenuation is attained below 300 cps and above
3500cps. The low pass filter provided for cw reception is down 30db or more
at 1600 cps from 1200 cps reference frequency and within three db from 1200
cps to 300 cps. Voice, cw or mcw signals may be received with this equipment.
A control on the front panel of the receiver permits the selection of the
type of reception. This control is designated CW-MCW-CAL and should be
operated to the MCW-CAL position when it is desired to receive voice or mcw
signals.When voice modulated or mcw reception is selected, the beat
frequency oscillator circuit is disabled, the avc circuit is connected so as
to be operative and a variabe "T" pad is used to control the input to the
headphones. If cw reception is selected, the avc is partially disabled, the
"T" pad is disconnectsd from the audio output circuit, and a potentiometer
connected in the catode circuit of the r-f amplifier and first and second
i-f amplifier tube circuits, is used to control the gain. Both "T" pad and
potentiometer are operated by the volume control. The equipment is designed
to operate at temperatures within range of -40°C to +60°C. This equipment
will operate satisfactory up to an altitude of 40,000 feet above sea level.
Associated radio transmitter ATC, AN/ART-13, or equal. Used in A-3A, RC-121,
P-2, Z-1, R-6D-1, ZPK. |
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