The TCN684 TACAN is a wideband navigation aid system which provides range and bearing information. It is compatible with all existing Airborne TACAN interrogators.
The system is designed and manufactured to meet the requirements laid down in:
In addition, all devices, material and tests are in accordance with above standards.
| TECHNICAL FEATURES | |
| Feature | Specification |
| Accuracy | ±30 m for Distance, ±1° for Bearing |
| Transmitter | Frequency Range: 962 MHz to 1213 MHz |
| X - Channel Pulse Pair Spacing: 12 µs | |
| Y - Channel Pulse Pair Spacing: 30 µs | |
| Pulse Shape and Spectrum: According to MIL-STD-291B | |
| Peak Output Power: Max up to 5KW | |
| Reply Delay: 50 µs nominal in X mode, 56-74 µs Programmable in Y mode | |
| Reply Delay Stabilization: ± 0.05 µs | |
| Receiver | Transponder Reply Efficiency: > 63% |
| Receiver Frequency Range: 1025 MHz to 1150 MHz | |
| Receiver Dynamic Range: 80 dB | |
| Receiver Sensitivity: -92 dBm for 70% Reply Efficiency | |
| Antenna | Antenna Gain: 5.0 dBi at beam maximum averaged with TACAN modulation |
| Antenna Azimuth Coverage: Omni-directional with 9 lobe cardioids shape pattern | |
| Azimuth Modulation: -2° to +40° | |
| Antenna Polarization: Vertical | |
| VSWR: Less than 1.8 with respect to 50 ohm input | |
| Power Rating: 6KW input power with 4% duty cycle | |
| Elevation Coverage: -2° to 40° | |
| ➤ Slope at horizon 1.7 dB/degree | |
| ➤ Peak gain approx. 3° | |
| ➤ Side lobes below -16 dB relative to peak | |
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