Hi everybody-new to the Forum. I live on the central coast of California, around 200 miles from San Francisco. Many years ago when I got my first shortwave radio, I happened upon quite frequent transmissions very late at night & into the early AM on 5.547 (SSB) that sound like air traffic controllers from SFO speaking to the airlines from other countries coming into the area to land, probably still far out over the ocean & at an altitude of 30,000+ feet. Sometimes I hear the navigators (?) of these planes request for a change of altitude, etc, and they often have a foreign accent. The SFO (and/or Oakland ?) tower usually informs them of a "secondary" frequency & then talks about a "cell phone" call, or something. I have found this frequency so interesting, that I've kept it on all thru the night for all these years while in bed, just so I don't miss anything (or much-when I'm asleep), as sometimes I've heard some very interesting stuff on here.
The question is, just exactly what am I listening to ? Does anyone else in CA within earshot of this on their radios know more about this, and could they please fill me in on ALL the details & more ? I'd really like to know where I could find the other SSB frequencies they use & also wish to learn how to get their "secondary" frequencies & learn when do they use them, etc. Some help on this would be greatly appreciated. Thank you.
The question is, just exactly what am I listening to ? Does anyone else in CA within earshot of this on their radios know more about this, and could they please fill me in on ALL the details & more ? I'd really like to know where I could find the other SSB frequencies they use & also wish to learn how to get their "secondary" frequencies & learn when do they use them, etc. Some help on this would be greatly appreciated. Thank you.
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