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APN-242 Dimensions and Operating Parameters
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Operating Parameters
| Frequencies |
Radar operation: X-band
9375 ±10 MHz; beacon reception 9310 MHz |
| Transmitted Power |
25 kW nominal peak (new high reliability magnetron) |
| Receiver Noise Figure |
6.5 db nominal |
| Range Scale |
2.5 to 20 (2.5 NM increments), 25, 30, 50, 100 and 240 NM |
| Pulse Length |
Multiple lengths (0.2, 0.8, 2.35 and 4.5 microseconds), automatically selected for different ranges and functions |
| Pulse Repetition Frequency |
.2 µsec @ 1024 Hz |
| .8 µsec @ 350 Hz |
| 2.35 µsec @ 350 Hz |
| 4.5 µsec @ 180 Hz |
| Scanning Features |
360-degree scan rates: 12 rpm on long range functions; 45 rpm on short range functions
Sector scan: approximately 90 degrees centered about forward position |
| Antenna Beam Selection |
Pencil or fan beam, both with 3-degree azimuth beamwidth and instantaneous electronic switching |
| Antenna Stabilization |
Stabilized to existing aircraft reference throughout a range of ±15 degrees pitch and ±30 degrees roll |
| Navigation Features |
Manual electronic cursor with latitude/longitude or range/bearing readout; latitude/longitude stabilized for fly to waypoint capability |
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Maximum Operating Conditions
Operating Tempature ( Internal Equipment )
| Parameter |
Normal Operation |
| Navigator & Pilot Indicators |
-15 to +55° C |
| Antenna Interface Unit |
-55 to +55° C |
| Video Processor |
-40 to +55° C |
Receiver/Transmitter &
Antenna Operating Temperature |
-55 to +55° C |
| Storage Temperature |
-57 to +85° C |
| Aircraft Altitude (Uninhabited) |
-1,500 to 50,000 feet |
| Cabin Pressure (Inhabited) |
0 to 8,000 feet |
| Maximum Level Flight Speed |
400 knots EAS |
| Vertical Speed |
± 1,500 ft/min |
| Pitch Angle |
± 15° |
| Bank Angle |
± 30° (stabilized) ± 60° (unstabilized) |
LRU Weight / Size
| Unit |
Dimensions |
Weight |
| Antenna |
35.8 x 35.8 x 34in |
69.0 lbs |
|
908.0 x 908.0 x 864.0 mm |
31.4 kg |
| Antenna Interface |
6.5 x 5.5 x 10.7in |
7.0 lbs |
|
165.0 x 140.0 x 272.0 mm |
3.2 kg |
| Receiver/Transmitter |
15.3 in dia., 15.1 in ht. |
65.0 lbs |
|
387.0 mm dia., 384.0 mm ht. |
29.5 kg |
| Video Processor |
7.8 x 7.8 x 12.3 in |
25.0 lbs |
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197.0 x 197.0 x 324.0 mm |
11.3 kg |
| Pilot’s Indicator |
6.5 x 6.5 x 12.0 in |
12.0 lbs |
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165.0 x 165.0 x 305.0 mm |
5.4 kg |
| Navigator’s Indicator |
8.5 x 10.0 x 12.8 in |
21.0 lbs |
|
216.0 x 254.0 x 323.0 mm |
9.5 kg |
| Navigator’s Control |
6.0 x 10.0 x 3.8 in |
5.5 lbs |
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152.0 x 254.0 x 95.0 mm |
2.5 kg |
