VIR 31A Nav

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FEATURES
  • Radio Navigation Receiver providing VOR, localizer, glideslope, and marker beacon outputs and automatic (RMI) and manual (CDI) VOR navigation
  • Has 200 VOR/LOC channels and 40 glideslope channels
  • Compatible with standard ARINC 2-out-of-5 control units
  • Provides navigation outputs to interface with pictorial navigation systems, analog area navigation systems, and conventional flight control systems
  • Supplies localizer and glideslope deviation outputs
  • Supplies high and low level flag signals, to/from information, marker beacon lamp signals, and VOR, localizer, and marker beacon audio outputs
  • Can be used with either 313N-4 series analog controls or CTL-30 and CTL-32 (w/ CAD adapter) digital controls
  • Models available with rotor modification modification (RC low-pass filter) for operation in helicopters (see table below)
  • Models available with different combinations of included or excluded glideslope receiver or marker beacon receiver (see table below)
  • Model available with modification to meet ICAO Annex 10 for reduction of FM interference by high-power FM broadcast radio stations (see table below)
  • ADD $450 FOR INSTALLATION KIT
SPECIFICATIONS
FAA TSO: C40a (VOR), C36c Class D (LOC), C34c Class D (GS), C35d Class A (MB) Environmental: DO-138, Category AD/A/JNG/AAAEXXXXX
Dimensions: 3.49"H x 5.04"W x 13.84"L Weight: 7.0 lbs.
Altitude: 45000 ft. max. Temperature: -54 to +55C (operation)
Frequency Range: 108.00-117.95 MHz with 50-kHz spacing Frequency Control: ARINC 2 out of 5
Selectivity: 6 dB: 34-kHz minimum bandwidth; 60 dB: 82-kHz maximum bandwidth VOR Channels: 160
LOC Channels: 40 Flag Sensitivity: Flag out of view at 3.0 uV
VOR Deviation Accuracy: +-1.0 deg. Deviation Loads: 5-load capability, 1000 ohms each without external strapping
Maximum Deviation Voltage: VOR (1V), LOC (500mV) To/From Loads: 2-load capability, 200 ohms each
Max To/From Voltage: 130 mV High-level Flag: 18 V dc minimum at 250 mA
Low-Level Flags: 1.2V dc, current limited to mA; four loads, 1000 ohms each without external strapping RMI Output: 3-wire synchro, compatible with conventional RMIs, capable of driving 3 RMI pointers
RMI Output Accuracy: +-1.5 degrees bench, +-2.7 degrees environmental Audio Output: 100 mW +-1 dB, 600 ohms
Glideslope Frequency Range: 329.15-335.000 MHz Glideslope Channels: 40 with 150-kHz spacing
Glideslope Frequency Control: ARINC 2 out of 5 Glideslope Selectivity: 6 dB: 41-kHz minimum bandwidth; 60 dB: 188-kHz maximum bandwidth
Glideslope Sensitivity: Flag out of view at 5 uV Glideslope Deviation Loads: 5-load capability, 1000 ohms each without external strapping
Glideslope Max Deviation Voltage: +-900 mV in ILS mode Glideslope Flag: Biased out of view in VOR mode with approx +1.0 V
Glideslope High-level Flag: +18 V dc minimum at 250 mA Glideslope Low-level Flags: 1.2 V dc, current limited at 10 mA; 4 loads, 1000 ohms with each without external strapping
Marker Beacon Frequency: 75 MHz Marker Beacon Sensitivity: (High) 200 uV +-6 dB; (Low) 1500 uV +-6 dB
Marker Beacon Audio Output: 100 mW into 600 ohms at 2000-uV input level (high sensitivity) Marker Beacon Load Capacity: Dual 3-lamp load

VIR-31A
Part Number Navigation Receiver Description:
622-1239-001 VOR/LOC/Glideslope/Marker Beacon Receivers
622-1239-002 VOR/LOC/Glideslope Receivers
622-1239-003 VOR/LOC/Marker Beacon Receivers
622-1239-004 VOR/LOC Receiver ONLY
622-1239-007 VOR/LOC/Glideslope/Marker Beacon Receivers with GS pointer bias removed
622-1239-008 VOR/LOC/Glideslope/Marker Beacon Receivers with GS pointer bias removed
622-1239-009 VOR/LOC/Glideslope/Marker Beacon Receivers
622-1239-011 VOR/LOC/Glideslope/MB Receivers with rotor mod. for helicopter use
622-1239-012 VOR/LOC/Glideslope Receivers with rotor mod. for helicopter use
622-1239-013 VOR/LOC/MB Receivers with rotor mod. for helicopter use
622-1239-014 VOR/LOC Receiver ONLY with rotor mod. for helicopter use
622-1239-201 VOR/LOC/Glideslope/Marker Beacon Receivers with FM immunity mod.
622-1239-202 VOR/LOC/Glideslope Receivers with FM immunity mod.
622-1239-203 VOR/LOC/Marker Beacon Receivers with FM immunity mod.
622-1239-204 VOR/LOC Receiver ONLY with FM immunity mod.
622-1239-207 VOR/LOC/Glideslope/Marker Beacon Receivers with GS pointer bias removed and FM immunity mod.
622-1239-208 VOR/LOC/Glideslope/Marker Beacon Receivers with GS pointer bias removed and FM immunity mod.
622-1239-209 VOR/LOC/Glideslope/Marker Beacon Receivers and FM immunity mod.
622-1239-211 VOR/LOC/Glideslope/MB Receivers with rotor mod. for helicopter use and FM immunity mod.
622-0876-212 VOR/LOC/Glideslope Receivers with rotor mod. for helicopter use and FM immunity mod.
622-0876-213 VOR/LOC/MB Receivers with rotor mod. for helicopter use and FM immunity mod.
622-1239-214 VOR/LOC Receiver with rotor mod. for helicopter use and FM immunity mod.