TRY THIS ONE!
LES-1 (Lincoln Experimental Satellite 1)
For all you Satellite Hunters, try this one out..
A satellite signals after 45 years plus of radio silence
Frequency : Around 236.997 MHz.
Please leave a comment below regarding your experience in receiving the signal.
Lincoln Experimental Satellite 1, also known as LES-1, is a communications satellite, the first of nine in the Lincoln Experimental Satellite program. Launched by the United States Air Force (USAF) on February 11, 1965, it pioneered many then-advanced technologies including active use of the X Band (7 to 11.2 GHz) to service hundreds of users. LES-1 did not have a successful operational life due to being placed in a suboptimal orbit, and it ceased transmissions in 1967. After 45 years of inactivity, LES-1 spontaneously resumed transmissions in 2012 making it one of the oldest zombie satellites.
The LES-1 (Lincoln Experimental Satellite 1) communications satellite operates primarily on an X-band spectrum for its original design and an ultra-high frequency (UHF) beacon/telemetry signal following its unexpected revival. [1, 2]
Operational & Transmisson Frequencies
Original Design (X-Band / SHF): Designed to use the 7 to 8 GHz spectrum (specifically around 7–8 GHz within the 7–11.2 GHz super high frequency band) for active military communications experiments.[1, 2]
Resumed Telemetry Signal (UHF): Following a power system fault after decades of silence, the satellite broadcasts an intermittent beacon/telemetry signal around 236.997 MHz (commonly referred to as 237 MHz) using Upper Sideband (USB) mode. [1, 2]
Signal Characteristics: The 237 MHz transmission pulses periodically every roughly 4 seconds as the satellite tumbles and sunlight hits its solar panels or exposed circuitry. [1, 2]
You can check live tracking data and details via SatNOGS DB or N2YO.com. [1, 2]
If you are tracking LES-1 or interested in amateur radio reception, let me know if you need help with Doppler shift calculations or pass predictions for your location.
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