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I have a property that I am trying to figure out the right antenna setup for. Currently running the following Antennas:

  • 1x Hustler 5BTV Vertical with radials
  • 1x Chameleon in a NVIS configuration
  • 1x Windom40 OCF

VNA Details https://1drv.ms/u/s!AmOoj1nayk49j_JaD9K0fCM0Wejhew?e=eotSfy

Angles for the property are as follows.

North facing, downslope property. House has 3 livable levels at Slopes of 84%,59%,56%; Laser range finder measured 53 degrees, 32 degrees, 29 degrees from the street at bottom of hill.

Looking for station location either 59% or 56% level of house and recommended Antenna considering Northern slope oriented takeoff as the ground plane

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    $\begingroup$ Hello and welcome to ham.stackexchange.com! What is your goal for your antenna system? $\endgroup$
    – rclocher3
    Jul 19 at 13:36
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    $\begingroup$ I am looking for a vertical covering a number of bands, all good except 80M is poor. So would like a separate 80M and also want to achieve a solid NVIS antenna. $\endgroup$
    – spreckoak
    Aug 21 at 6:08
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    $\begingroup$ @spreckoak Please edit your question to include that. Readers shouldn't have to read the comments to see the complete picture. I have added the NVIS tag for you. :-) $\endgroup$
    – Mike Waters
    Aug 23 at 21:07
  • $\begingroup$ What are the approximate dimensions of your property? I don't grasp the relationship of those angles to the lengths and layout of your land. A drawing inserted in your question might help! In fact if it were detailed enough, someone might even offer to model it for you. :-) $\endgroup$
    – Mike Waters
    Aug 23 at 21:30
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    $\begingroup$ Sorry, but you didn't quite answer my question about your goals. Obviously you're looking to make local contacts or you wouldn't have mentioned NVIS. Are you also interested in making contacts out further than 1000 km (600 miles) or so? And why do you say you want a multi-band vertical? Is that because you're looking for one antenna to cover most bands? We could give you better recommendations if you would tell us more. $\endgroup$
    – rclocher3
    Sep 27 at 15:38
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You are not going to get a decent NVIS signal on 80 meters with a vertical. (The exception might be an antenna like an inverted-L, with much of the top horizontal.)

Dipole

A far better choice would be a dipole (either horizontal or inverted-vee), no more than λ/4 high. A balanced dipole does not need an RF ground system to be efficient, but an inverted-L does.

I had an inverted V dipole supported at 65' and the ends about 15' to 20' high. It worked very well indeed.

Horizontal loop

A horizontal loop is another option; However, it requires multiple supports at a sufficient height above the earth to minimize losses in the ground underneath it.

Beware of the common myth that the lower the antenna, the better it works as an NVIS antenna. On the contrary, your signal will be weaker and lack the coverage that a higher horizontal antenna will.

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