TACAN+

Small and rugged tactical airborne navigation system

Weighing in at just 5.2 pounds, TACAN+ is the world’s smallest and lightest weight TACAN device, and the only system able to track up to four ground stations simultaneously in range and two in bearing. TACAN+ employs software-controlled antenna switching, allowing the aircraft to be configured for dual antennas if needed.

Military-grade reliability

Designed for air-to-air and air-to-ground operations, TACAN+ meets MIL-STD 291C and NATO STANAG-5034. It has been tested to MIL-STD-810G, MIL-STD-704 and MIL-461E, and meets DO-160F helicopter vibration levels. The TACAN+ system features lightning-protected circuitry and is subjected to Highly Accelerated Stress Screening (HASS) and Highly Accelerated Life Testing (HALT) for maximum system reliability.

Flexible controllers and indicators

The L3 TACAN+ incorporates a Sine/Cosine bearing output along with a CDI interface per ARINC 547, and low- and high-level flags per ARINC 547 and 579. This bearing information is pilot-selectable, from either the number one (1) or number two (2) tracking channels. The TACAN+ provides an ARINC 568 Digital Range output from either the number one (1) or number two (2) tracking channels for display of range information on remote EFIS or HSI displays.

PHYSICAL

TACAN+ Receiver-Transmitter 5.2 lb. (2.36 kg)
ID-2502 Display Unit 0.4 lb. (0.18 kg)
TACAN+ Mounting Tray 0.4 lb. (0.18 kg)
Control Units:
F3849 1.25 lb. (0.567 kg)
F6555 2.0 lb. (0.907 kg)

SIZE

TACAN+ Receiver-Transmitter 4.97 in. (H) x 3.45 in. (W) x 10.75 in. (D)

(12.62 cm x 8.76 cm x 27.31 cm)

ID-2502 Display Unit 1/2 3ATI x 6.9 in. (17.53 cm)
Control Units:
F3849 2.4 in. x 2.8 in. (6.10 cm x 7.11 cm)
F6555 2.24 in. x 5.75 in. (5.69 cm x 14.6 cm)

POWER REQUIREMENTS

TACAN+ Receiver-Transmitter 18 VDC to 32 VDC @ 1.5 amps Max.
ID-2502 Display Unit 18 VDC to 32 VDC @ 0.25 amps Max.
Control Units: F3849, F6555 5 VDC to 28 VDC @ 0.15 amps Max.

TEMPERATURE

TACAN+ Receiver-Transmitter -54 °C to +71 °C
ID-2502 Display Unit -20 °C to +71 °C
Control Units: F3849, F6555 -20 °C to +71 °C

ALTITUDE

TACAN+ Receiver-Transmitter to 70,000 feet
ID-2502 Display Unit to 55,000 feet
Control Units: F3849, F6555 to 70,000 feet

CHANNELS

252 (consisting of 126 X Mode and 126 Y Mode Channels)
126 Channels for Air-to-Air Ranging (MIL-STD-291C & NATO STANAG 5034)

FREQUENCY RANGE

RECEIVER 962 to 1213 MHz (All 252 X and Y Mode Channels)
TRANSMITTER 1025 to 1150 MHz (All 252 X and Y Mode Channels)
AIR-TO-AIR MODE 126 Channels (63 X Mode and 63 Y Mode)

COOLING

TACAN+ Receiver-Transmitter & ID-2502 Display Unit Conduction & Convection

VIBRATION

TACAN+ Receiver-Transmitter DO-160F Cat U2FF1 Helicopter Vibration Levels

RANGE

Capability 0.0-400 nm Tracking Capability
Accuracy ± 0.1 nm 0 to 399.9 nm
Display Resolution ID-2502 ±0.1 nm from 0.0 to 99.9, ± 1.0 nm from
100 nm to 400 nm
ARINC 568 0.0 – 399 ± 0.1 nm

POWER OUTPUT

500 Watts peak minimum, 750 Watts peak typical

RECEIVER SENSITIVITY

  • 85 dBm minimum for range
  • 79 dBm minimum for bearing

RANGE

Capability: 0.0-400 nm Tracking Capability
Accuracy: ± 0.1 nm 0 to 399.9 nm
Display Resolution ID-2502: ±0.1 nm from 0.0 to 99.9, ± 1.0 nm from
100 nm to 400 nm
ARINC 568: 0.0 – 399 ± 0.1 nm

RANGE TRACKING RATE

0 nm to 1800 nm per hour

GROUND SPEED (ID-2502 DISPLAY)

0 Kts to 999 Kts ± 1 Kt or 1% within 30 seconds

TIME-TO-STATION (ID-2502 DISPLAY)

0-99 Minutes ± 1 Minute within 30 seconds

BEARING ACCURACY

Accuracy 0.5 degrees digital; ± 1.0 degress analog – Radial; Track rate: 10 degrees/sec

Memory Time

8 seconds nominal range and bearing

Acquisition Time

3 sec. to 5 sec. nominal range and bearing

ID TONE

10 MW at 1350 Hz into a 600 Ohm load (Level Adjustable)

STATION IDENT

Up to 4 letters (Displayed on ID-2502)

SYSTEM TEST

Automatic upon system turn on and background testing during operation

DISTANCE OUTPUTS

ARINC 568 Pulse Pair* (Output limited to 204.0 nm)
40 mv/nm* (Output limited to 199.9 nm)
ARINC 568 Six wire*
RS485 Serial Digital provides distance for all four stations simultaneously

DISTANCE FLAG

ARINC 568, 40 Millivolt (Output limited to 204.0 nm)

AIR-TO-AIR

Per MIL-STD-291C & NATO STANAG 5034

BEARING

RS485 Serial Digital format provides TACAN bearing for two stations simultaneously, Sine/Cosine AC, 7.9 volts peak*, 100 Ma Peak Low Level CDI Outputs (per ARINC 547):

Course 150 Mv per 10 degrees
Deviation ±10 degrees full scale up to 5 ea 1,000 Ohm loads
Flag Outputs Per ARINC 547 & ARINC 579
Low Level 0.5 VDC, 1 Ma maximum, up to 4 ea 1,000 Ohm loads
High Level 28 VDC, 250 Ma maximum
To/From Output Up to three 200 Ohm loads

ARINC 429 & MIL-STD-1553B

Input — Channeling Frequency
Output — Distance, Ground Speed, Time to Station, Bearing,
Channeling Frequency, Identification, Equivalent I.D.

Product Support

Technical Support:
Email: FieldService.Avionics@L3T.com
Phone: +1 (616) 949-6600
AOG Hotline: +1 (800) 453-0228 or +1 (616) 949-6600
Ft. Lauderdale AOG: +1 (954) 629-8689

Repair and Overhaul Administration:
Email: service.avionics@L3T.com
Phone: +1 (800) 253-9525
Fax: +1 (616) 977-6895

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