UPX-14: Difference between revisions
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'''{{PAGENAME}} Long Range Interrogator-Responder IFF/SIF Set''' - A Long-Range Interrogator-Responder IFF/SIF set built by ?????. The UPX-14 transmits IFF/SIF interrogations and receives replies from aircraft within the host radar's range. The UPX-14 requires a master external encoder and a separate decoder for each operating position/data processor. Typical of the encoder/decoder equipment used in a manual system is the GPA-122 which allows up to 14 decoder units or one for each radar scope. In the SAGE System, the FST-2 Coordinate Data Transmitter supplies the encoder and decoder functions to the UPX-14. | '''{{PAGENAME}} Long Range Interrogator-Responder IFF/SIF Set''' - A Long-Range Interrogator-Responder IFF/SIF set built by ?????. The UPX-14 transmits IFF/SIF interrogations and receives replies from aircraft within the host radar's range. The UPX-14 requires a master external encoder and a separate decoder for each operating position/data processor. Typical of the encoder/decoder equipment used in a manual system is the [[GPA-122]] which allows up to 14 decoder units or one for each radar scope. In the SAGE System, the [[FST-2]] Coordinate Data Transmitter supplies the encoder and decoder functions to the UPX-14. | ||
It is possible with the UPX-14 to process information about friendly aircraft (SIF) and to determine if an aircraft is friendly (IFF). SIF information is obtained by interrogating friendly aircraft with a set of two pulses, the space between them determines which of 4 modes is used. IFF (Identification Friend or Foe}) also known as Mode 4 transmits the two pulses and a classified (a/o 1958) encrypted code train of pulses providing identity information. | It is possible with the UPX-14 to process information about friendly aircraft (SIF) and to determine if an aircraft is friendly (IFF). SIF information is obtained by interrogating friendly aircraft with a set of two pulses, the space between them determines which of the 4 modes is used. IFF (Identification Friend or Foe}) also known as Mode 4 transmits the two pulses and a classified (a/o 1958) encrypted code train of pulses providing identity information. | ||
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! Notes | ! Notes | ||
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| align="center"| 1 || 3 us || 32 || | | align="center"| 1 || 3 us || 32 || Mil || 2-digit 5-bit mission code, '''cockpit selectable''' || | ||
|- | |- | ||
| align="center"| 2 || 5 us || 4096 || Mil || 4-digit octal unit code set on ground for fighters<br>can be changed in flight by transport aircraft || | | align="center"| 2 || 5 us || 4096 || Mil || 4-digit octal unit code '''set on ground for fighters'''<br>can be changed in flight by transport aircraft || | ||
|- | |- | ||
| align="center"| 3A || 8 us || 4096 || Mil/Civ|| 4-digit octal id code for the aircraft, set in the cockpit<br>assigned by the '''air traffic controller''' || | | align="center"| 3A || 8 us || 4096 || Mil/Civ|| 4-digit octal id code for the aircraft, set in the cockpit<br>assigned by the '''air traffic controller''' || | ||
|- | |- | ||
| align="center"| 3C || 21 us || 1278 || Mil/Civ || Altitude || | | align="center"| 3C || 21 us || 1278 || Mil/Civ || Altitude from '''aircraft altimeter''' || | ||
|- | |- | ||
| align="center"| 4 || || | | align="center"| 4 || Encrypted<br>Challenge|| 3-pulse reply || Mil || Encrypted ID info|| | ||
|} | |} | ||
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| PRF || Host radar determined || | | PRF || Host radar determined || | ||
|- | |||
| Range || Host radar determined || Long | |||
|- | |- | ||
| Power || 117 V, single phase<br>50, 60, 400 Cycles|| | | Power || 117 V, single phase<br>50, 60, 400 Cycles|| | ||
|- | |- | ||
| Coder/Decoder || External || | | Coder/Decoder || External || | ||
Latest revision as of 05:43, 22 July 2021
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UPX-14 Long Range Interrogator-Responder IFF/SIF Set - A Long-Range Interrogator-Responder IFF/SIF set built by ?????. The UPX-14 transmits IFF/SIF interrogations and receives replies from aircraft within the host radar's range. The UPX-14 requires a master external encoder and a separate decoder for each operating position/data processor. Typical of the encoder/decoder equipment used in a manual system is the GPA-122 which allows up to 14 decoder units or one for each radar scope. In the SAGE System, the FST-2 Coordinate Data Transmitter supplies the encoder and decoder functions to the UPX-14. It is possible with the UPX-14 to process information about friendly aircraft (SIF) and to determine if an aircraft is friendly (IFF). SIF information is obtained by interrogating friendly aircraft with a set of two pulses, the space between them determines which of the 4 modes is used. IFF (Identification Friend or Foe}) also known as Mode 4 transmits the two pulses and a classified (a/o 1958) encrypted code train of pulses providing identity information.
UPX-14 Interrogator-Responder IFF/SIF
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