My recording of CHU Canada Time station on 7850
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I recorded this one on Thursday, June 4. Make sure to listen and get your last recording of CHU, because once June 22 comes, they'll be off the air for good. 
I remember hearing that in the late 70s and/or early 80s on an AM radio that for some reason, probably antenna damage from Yours Truly tinkering with it, picked up shortwave also. I always wondered what was in that data carrier sound, at least starting when I knew what a data carrier was.
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Yeah I often wonder too, because the data carrier is something. 
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