This product is a kit to be assembled by the purchaser. It’s function is to output real time ADS-B Out Airborne Position, Airborne Velocity, and Aircraft Identification baseband signals.
The Circuit requires 5 Volt power.
INPUT – ES1090/UAT978
$GPRMC and $GPGGA NMEA sentances from a 3.3V/5V GPS module serial TX output programmed to 9600 baud.
OUTPUT – ES1090
Airborne Position: CPR(even) and CPR(odd) latitude and longitude, and altitude(ft).
Airborne Velocity: East/West velocity sign. East/West velocity(kts.) North/South velocity sign. North/South velocity(kts.)
Aircraft Identification: Call sign is arbitrarily set to PITT23RS.
ONLY the above fields are updated via GPS. All other fields are arbitrary.
All frames include 8 preamble bits and 24 CRC error detection bits.
All data is Pulse Position Modulated and ready for up conversion to 1090Mhz carrier frequency. Data bit period = 1.0uS.
Frames are updated every 2 seconds continuously.
OUTPUT – UAT978
Airborne Position: latitude, longitude, and altitude(ft).
Airborne Velocity: East/West velocity sign. East/West velocity(kts).
North/South velocity sign. North/South velocity(kts).
Aircraft Identification: Call sign is arbitrarily set to PITT23RS.
ONLY the above fields are updated via GPS. All other fields are arbitrary.
All messages include 36 bit sync sequence and 14 reed-solomon ECC symbols.
Complementary output. All data is ready for up conversion to 978Mhz + 312.5Khz (binary 1 – ‘mark’) and 978Mhz – 312.5Khz (binary 0 – ‘space’) carrier frequencies. Data bit period = 0.96us. Modulation must be CPFSK (Continuous Phase Frequency Shift Keying).
Frames are updated every 2 seconds continuously.
Kit is for baseband gererator only. GPS module and Up Converter not included. Kit includes close up photo, schematics, instructions, proto board, pre-programmed ICs, crystals, switches, and all passive components.
