MIL-HDBK-162A
Volume 1
15 December 1965
Section 1
TYPE: AN/TXQ-1
ously tunable.
(1) it obtains radar information from a search radar, (2) it
Type of Frequency Control
modulates the information into microwave form and (3)
AN/TXT-1: Manual
it transmits the microwave signal to the data receiver.
AN/TXR-1: Automatic
The data receiver demodulates the information and
Type of Emission and Reception, and Modula-
sends it to the indicators.
tion of Characteristics
RELATION TO SIMILAR EQUIPMENT
Type of Emission: FM carrier with plus or
None.
minus 3 mc deviation.
TECHNICAL DESCRIPTION
Type of Reception: FM with a bandwidth of
Receiver Outputs
9 mc
Handset: 0 db W into 150 ohms
Modulation Characteristics
Field Telephone: 0 db W into 600 ohms
AN/TXT-1: FM by video signals and
Video: 2.5v into 75 ohms
trigger pulses, and three FM sub-
Trigger: 35v into 75 ohms
carriers.
Frequency Stability
AN/TXR-1: FM by voice subcarrier
AN/TXT-1: 80 kc per deg C
only.
AN/TXR-1: 25 mc below AN/TXT-1 carrier,
Power Supply
plus or minus 250 kc
Input Voltage: 115v, 60 or 400 cps, 1-ph
Input and Output
Input Current
Video In: plus 1.5 to 2.5 from a 75 ohms
AN/TXT-1: 6.5 amp at 60 cps, 6.4 amp
source
at 400 cps
Video Out: plus 1.5 to 2.5v across 75
AN/TXR-1: 7.4 amp at 60 cps, 7.6 amp
ohms
at 400 cps
Trigger In: plus 25 to 50v across 75
Power Factor
ohms
AN/TXT-1: 0.88 at 60 cps, 0.96 at 400
Trigger Out: plus 25 to 50v from a 75
cps
ohms source
AN/TXR-1: 0.89 at 60 cps, 0.9b at 400
Azimuth In and Out: Standard 115/90v
cps
synchro voltages (antenna rotation O to
Temperature Limitations
15 rpm).
Operating: Air temperature, -40 deg F
Maximum Azimuth Error: plus or minus 2.5
to plus 125 dog F
deg peak error (antenna rotation of 2
Not Operating: Air temperature, -65 deg
to 10 rpm) or plus or minus 3.5 deg
F to plus 165 deg F
peak error (antenna rotation of 10 to
15 rpm). Average error thru 360 deg;
INSTALLATION CONSIDERATIONS
2 deg.
Antenna
Siting: Control and display components can be
Beamwidth: 4 plus or minus 0.5 deg
installed 15 mi from remaining components of
between half-power points
the AN/TXQ-1.
Gain: 31.5 db
Related Equipment: (Used with but not part of) (1)
Voltage Standing Wave Ratio: 1.15 max
Radio Set AN/TPS-1D, (1) Indicator Group
Front Side-Lobes: 6.5 deg down 20 db
AN/UPA-25.
from max power point.
Frequency Range: 4600 to 5000 mc, continu-
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENTS
QTY
OVERALL DIMENSIONS
UNIT WT.
(Inches)
(Pounds)
AN/TXT-1
1
Power Supply Group OA-1244/TXT-1
Electrical Equipment Cabinet CY-2033/TX
Motor Generator PU-373/TXT-1
Power Supply PP-1576/TX
Receiver-Transmitter Group OA-1245/TXT-1
AN/TXQ-1: 2
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