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Many thanks to SWLing Post contributor, Ivan (NO2CW), who writes:
If anyone is interested in monitoring aircraft communications across HF, VHF and UHF, Thomas, N1SPY put together a demo video of what you can hear and how:
“So, a year or two ago Ryan Stively made an instrumental piece called Missing Cities and around the same time I recorded a chunk of shortwave sound that I called Missing Cities. When making some pieces for the recent Shortwave Shindig 2015 broadcast I decided the twain should meet.”
My good buddy, David Goren, directed me to the VOLMET frequency for New York Sunday afternoon on 3,485 kHz.
VOMET, for those of you not familiar, is a worldwide network of radio stations that broadcast TAF, SIGMET and METAR aviation weather reports on shortwave radio, and in some countries on VHF, too. All of the reports are broadcast in upper sideband, using automated voice transmissions.
At any rate, they must have experienced a glitch which resulted in the loss of meteorological data for most of the United States. The broadcast preamble is as usual, but as soon as specific airport regions (mostly major US cities and some islands) are mentioned, the report takes a disturbing turn. It’s fodder for science fiction–one is not sure whether to be alarmed or amused by this eyebrow-raising data (or, lack thereof).
The end result becomes almost like a numbers station, sans numbers, of course. Take a listen for yourself by clicking here to download the recording, or listen via the embedded player below:
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