The Flight Termination Receiver (FTR) is a compact airborne unit developed to receive and decode tone-based command signals within flight termination systems. Utilizing a highly sensitive superheterodyne RF receiver with a programmable center frequency, it enables reliable detection of IRIG-standard command tones for activation of termination functions during flight test operations.
The system supports both 3-tone and 4-tone decoding across a set of 20 IRIG tones, providing flexibility for different operational configurations. This allows adaptation to varying safety protocols and mission requirements within controlled test environments.
Designed for safety-critical use, the receiver incorporates comprehensive fail-safe functionality, including programmable loss-of-tone duration, low-voltage detection, and cross-strapping options. Signal strength telemetry output provides real-time RF monitoring, supporting continuous assessment of link integrity during operation.
The FTR is engineered for rugged airborne conditions and is compliant with RCC 319-14, RCC 313-01, and MIL-STD-810G environmental standards. It provides a dependable solution for tone-based command decoding across flight safety systems supporting missiles, launch vehicles, and wider defense platform applications.
| Frequency Range: | 390–450 MHz |
| Input Voltage (V): | 18–36 VDC |
| Operating Voltage & Input Current: | Max. 150 mA @ 28 VDC |
| Power Consumption (W): | < 5 |
| Sensitivity: | < -107 dBm |
| Dynamic Range: | -107 dBm to +13 dBm |
| RF Sensitivity Range: | -107 dBm to -116 dBm |
| Demodulation: | FM up to 4 tones |
| Tone Frequencies: | 20 IRIG Tones |
| Command Outputs: | 4 Solid-State Outputs |
| Signal Strength Telemetry Output (SSTO): | 0.5 VDC (no RF), up to 5 VDC (active) |
| Tone Monitor Outputs: | 4.5 VDC ±0.5 (active), 0 VDC ±0.5 (non-active) |
| Response Time: | 4–25 msec |
| Failsafe Options: | Loss of Tone (5–99 sec), Low Voltage (12–36 V), Cross-Strapping |
| Programming Interface: | RS-422 |
| Input / Output Impedance: | 50 Ω |
| VSWR: | < 2:1 |
| Connectors: | SMA, 25-pin Micro-D Socket |
| Dimensions (cm): | 8.4 × 5.6 × 1.3 |
| Weight (g): | 97 |
| Operating Temperature (°C): | -40 to +85 |
| Environmental Condition: | MIL-STD-810G |
| Compliance: | RCC 319-14, RCC 313-01, IRIG Compatible |
