HF ATC stations

Discussion in 'Ham Radio Discussions' started by KL7AJ, Dec 8, 2019.

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  1. KE0GXN

    KE0GXN XML Subscriber QRZ Page

    Just checked out FlightRadar24 and the C-17 is not showing up on their radar...lots of civilian/commercial. I do like the interface though.
    1 person likes this.
  2. KL7AJ

    KL7AJ Ham Member QRZ Page

    Got some great propagation today. Dunno if 33 below is why or not. :)
  3. NL7W

    NL7W Premium Subscriber QRZ Page

    Why . . . of course!
  4. AI7PM

    AI7PM Ham Member QRZ Page

    These aren't ARTCC "Center" transmissions you are hearing from air traffic controllers, but ARINC relaying ATC clearances.
  5. WA9SVD

    WA9SVD Ham Member QRZ Page

    Probably more military aircraft into Elmendorf AFB then commercial planes into Anckorage International Airport.:(:D:rolleyes:
  6. M0IND

    M0IND Ham Member QRZ Page

    It's always a surprise to be when a military aircraft with a decent antenna keys up.
  7. N3VEZ

    N3VEZ XML Subscriber QRZ Page

    I was an Air Traffic Controller for over thirty years. I worked at New York ARTCC for eight years until 1980. We had hf radio to transfer non radar oceanic traffic to Sana Maria ATC. I don’t know what they use now. When propagation was bad we used teletype. After 1980 I spent twenty years at BWI Tower. It was closer to where I grew up. AIRINC relayed clearances to aircraft out of VHF range via hf.
  8. W7IMM

    W7IMM Ham Member QRZ Page

    None of them really have decent HF antennas though. You're usually hearing 400W (output) transmitter connected (via an automatic coupler) to an antenna embedded into the tail.

    None of the (ARINC) HF operators are actually "Air Traffic Controllers" They simply relay the position reports, requests & clearances etc to the respective ARTCC (Air Route Traffic Control Centers) and then relay the reply.

    I'll also add that CPDLC is literally going to make HF SSB for aircraft position reporting, clearances and other aircraft "traffic" "obsolete" in that it will eventually become secondary and little used once CPDLC is fully implemented. The aircrew will still likely do a radio check on the ground prior to departing by actually be transmitting "in the blind" and hearing "sidetone" (in the headset) and then assuming it's "good to go"

    It's actually the other way around. Elmendorf is not all that active an "airport" compared to Anchorage.
    Last edited: Dec 21, 2019
    K0UO likes this.
  9. W7IMM

    W7IMM Ham Member QRZ Page

    It probably seems counter intuitive but altitude past a couple of wavelengths doesn't seem to help at all unless you're trying to work line-of-sight like on 10m.
    High altitude (like altitudes in the 20,000ft-40,000ft) on 75m or 40m for example doesn't seem to make any difference at all!
  10. WW2PT

    WW2PT Ham Member QRZ Page

    Lately I’ve been making a habit of checking Shannon VOLMET on 5505 kHz. It’s a usually pretty good indicator of propagation to EU on 80m.
    K0UO likes this.

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