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 Expedition communications, overland navigation, teamwork challenges

HF NVIS 101

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  • 07 Nov 2017 1:15 AM
    Reply # 5572876 on 4968034

    Hi Donald,  I will also be participating from a remote location and using a G5RV.  I think Rick is working up a freq and time schedule so hope to hear you and make a contact.  Stay tuned.  

    By the way, we need to figure out how to reply that we will be participating and "attending" the event even though we don't physically show up.

  • 07 Nov 2017 11:39 AM
    Reply # 5575433 on 4968034
    Rick Bean (Administrator)

    I will be posting the HF Schedule for the Savahia Op here http://landops.wildapricot.org/page-18102/5575325

  • 07 Nov 2017 1:09 PM
    Reply # 5575585 on 5572876
    Emmanuel Tsomp wrote:

    Hi Donald,  I will also be participating from a remote location and using a G5RV.  I think Rick is working up a freq and time schedule so hope to hear you and make a contact.  Stay tuned.  

    By the way, we need to figure out how to reply that we will be participating and "attending" the event even though we don't physically show up.


    Looking forward to it!

  • 26 Nov 2017 8:33 PM
    Reply # 5602217 on 4968034
    Geomagnetic storm watch for Nov. 29, due to increased sun corona activity.  We may have degraded HF propagation and VHF interference. Hopefully, it'll pass before the weekend.
  • 27 Nov 2017 12:53 PM
    Reply # 5603305 on 4968034
    Chris Doering (Administrator)

    So just to be clear...we are not geomagnetic storm chasers?

  • 28 Nov 2017 6:17 AM
    Reply # 5604292 on 4968034
    Ha!  Chasing geomagnetic storms isn't exactly part of the Land Ops mission statement, but we'd accept the challenge.  Let me talk with my buddy Elon Musk and see if he'll fund it....
  • 18 Dec 2017 11:46 AM
    Reply # 5641564 on 4968034
    Chris Doering wrote:

    NVIS - Near Vertical Incident Skywave

    I saw this Hummer online with the antenna farm on top. It has the tell tail whip that is bent forward and this is not for going through the drive-thru. We see this on many military vehicles. This position is not for passing under bridges, but it is meant to intentionally aim a portion of the antenna wave at a high angle upward so to get a skywave to bounce off the ionosphere. This is ideal for HF communications between stations up to a few hundred miles.


    On this topic we'd like to get the basics of NVIS, i.e. antennas, frequencies, ionospheric conditions affecting skywave propogation, etc...

    Please share the basics here....

    (note) the wild apricot forum is working on making photo posting by everyone. RIght now only administrators can add photos to forum topics. In the meantime, if you have a diagram or photo that helps us understand NVIS please email it to me and I can add it to the post.

    send to ki6qbm@landops.org


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