NOAA 09

Also called NOAA F

---

General

Designation	15427 / 84123A
Launch date	12 Dec 1984
Country of origin	United States
Mission	Meteorology
Perigee/Apogee	835/858 km
Inclination	99.158°
Period	101.8 min
Launch vehicle	Atlas E
Launch site	Vandenberg

---

End of life

Out of service	1998
Cause	decommissioned
Decay

In late 1999 a transmitter on 137.505 MHz started working again, sending an unmodulated carrier. It seems to transmit while the satellite is in sunlight.

Technical data

---

Specifications
Payload

APT downlink freq.	137.620 MHz (inoperative)
HRPT downlink freq.	1707.0 MHz
Beacon	137.770 MHz

---