Phil Williams, G3YPQ, is an Amateur Radio Astronomer in North Cornwall in the U.K.. According to reports he accidentally picked up the signal and after cross checking with various lists, he identified it as LES 1.
LES 1 was built by the Massachusetts Institute of Technology and launched in 1965. The satellite failed to reach its intended orbit owing to a wiring error and has been drifting out of control ever since. Williams ran across it while monitoring near 237 MHz when he noticed a signal with a peculiar signal drift caused by the bird tumbling end over end every 4 seconds as the solar panels became shadowed by the satellites engine. Williams said that gives the signal a particularly ghostly sound as the voltage from the solar panels fluctuates. The LES 1 satellite is about the size of a small car and is not likely to re-enter the atmosphere for a long time as the orbit is still relatively high. It poses no threat other than that caused by the thousands of other pieces of space junk currently in orbit. By now its likely that the on board batteries have now disintegrated so its likely that some other component failure has caused the transmitter to start up when its in sunlight bringing the ghost satellite back to life.