THF 567Y

THF 567Y is a unknown tremendously high frequency (THF) station used by Class I railroads or rail-carriers. It broadcasts on 411 GHz (THF), 300 GHz (EHF), 30 GHz (SHF), 3 GHz (UHF), and 300 MHz (VHF). It was first heard in 1979 while a Conrail train (QSD4) was going northbound to Massachusetts from Pennsylvania. Each transmission starts with the color bars noise for a couple of seconds, then railroad radio talk (e.g. CSX Q23Z, we are going fast at 78 mph). The transmitter, according to CSX, is located on top of Asnebumskit Hill in Paxton, Massachusetts.
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