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fo29Mode V/U (J) Linear Transponder (Inverting):
Uplink: 145.9000 – 146.0000 MHz SSB/CW
Downlink 435.8000 – 435.9000 MHz SSB/CWMode U Beacon:
Downlink 435.7950 MHz CW
NOAA 18, known before launch as NOAA-N, is a weather forecasting satellite run by NOAA. NOAA-N (18) was launched into a sun-synchronous orbit at an altitude of 854 km above the Earth, with an orbital period of 102 minutes. It hosts the AMSU-A, MHS, AVHRR, Space Environment Monitor SEM/2 instrument and High Resolution Infrared Radiation Sounder (HIRS) instruments, as well as the SBUV/2 ozone-monitoring instrument. NOAA 18 is the first NOAA POES satellite to use MHS in place of AMSU-B. APT transmission frequency is 137.9125 MHz (NOAA-18 changed frequencies with NOAA-19 on June 23, 2009).
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