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12
portfolio/en/radio.html
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@ -10,18 +10,6 @@ language: "en"
<p>Here I post my notes on the hobby.</p>
<hr/>
<h2>Antenna</h2>
<ul>
$for(antenna)$
<li><a href="$url$">$title$</a></li>
$endfor$
</ul>
<hr/>
<h2>Field days</h2>
<table class="table table-striped table-hover table-light">

1
portfolio/images/.gitignore vendored
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@ -1,3 +1,2 @@
plamo/*
radio/*
software/*

12
portfolio/jp/radio.html
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@ -10,18 +10,6 @@ language: "jp"
<p>ここには、メモを<ruby><rb>載<rt>の</ruby>せています。</p>
<hr/>
<h2>アンテナ</h2>
<ul>
$for(antenna)$
<li><a href="$url$">$title$</a></li>
$endfor$
</ul>
<hr/>
<h2>フィルドデイ</h2>
<table class="table table-striped table-hover table-light">

12
portfolio/nl/radio.html
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@ -10,18 +10,6 @@ language: "nl"
<p>Hier plaats ik mijn notities over de hobby.</p>
<hr/>
<h2>Antennes</h2>
<ul>
$for(antenna)$
<li><a href="$url$">$title$</a></li>
$endfor$
</ul>
<hr/>
<h2>Velddagen</h2>
<table class="table table-striped table-hover table-light">

967
portfolio/pages/en/plamo/model-kits/airplanes/military/ki-55.md
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363
portfolio/pages/en/radio/antenna/nvis.md
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@ -1,363 +0,0 @@
---
logosub: "HAM Radio"
language: "en"
title: "NVIS"
date: "2024-03-09"
---
This [Near vertical incidence skywave antenna](https://en.wikipedia.org/wiki/Near_vertical_incidence_skywave) was made for me by PA0ABG.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-setup-diagram-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-setup-diagram-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-setup-diagram-w800.webp"
alt="N V I S setup diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-setup-diagram-w800.webp">
NVIS setup diagram
</a>
</figcaption>
</figure>
A [FR-4 PCB](https://en.wikipedia.org/wiki/FR-4) is used. Half of it was scraped off for this design.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-scrape-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-scrape-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-scrape-w800.webp"
alt="N V I S P C B scrape"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-scrape-w800.webp">
NVIS PCB scrape
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-w800.webp"
alt="N V I S P C B"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-w800.webp">
NVIS PCB
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/covering-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/covering-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/covering-w800.webp"
alt="N V I S P C B liquid tape"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/covering-w800.webp">
NVIS PCB liquid tape
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/coax-connector-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/coax-connector-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/coax-connector-w800.webp"
alt="N V I S coax connector"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/coax-connector-w800.webp">
NVIS coax connector
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-2-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-2-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-2-w800.webp"
alt="N V I S P C B"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-2-w800.webp">
NVIS PCB
</a>
</figcaption>
</figure>
The antenne wires, coiled on a piece of pipe.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/coils-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/coils-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/coils-w800.webp"
alt="N V I S wire coils"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/coils-w800.webp">
NVIS wire coils
</a>
</figcaption>
</figure>
## Diagrams
Some 3d plots of this antenna on 10, 17, 20, 40 and 80 meters made with EZNEC software by PA0ABG. The antenna is most effective on 20, 40 and 80 meters, where the waves go upwards.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w800.webp"
alt="N V I S 10 meter 28 mega hertz diagram top"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w800.webp">
NVIS 10 meter 28 mega hertz diagram top
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w800.webp"
alt="N V I S 10 meter 28 mega hertz diagram side"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w800.webp">
NVIS 10 meter 28 mega hertz diagram side
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-17m-18mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-17m-18mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-17m-18mhz-w800.webp"
alt="N V I S 17 meter 18 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-17m-18mhz-w800.webp">
NVIS 17 meter 18 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-20m-14mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-20m-14mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-20m-14mhz-w800.webp"
alt="N V I S 20 meter 14 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-20m-14mhz-w800.webp">
NVIS 20 meter 14 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-20m-14mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-20m-14mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-20m-14mhz-w800.webp"
alt="N V I S 20 meter 14 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-20m-14mhz-w800.webp">
NVIS 20 meter 14 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-40m-7mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-40m-7mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-40m-7mhz-w800.webp"
alt="N V I S 40 meter 7 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-40m-7mhz-w800.webp">
NVIS 40 meter 7 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w800.webp"
alt="N V I S 80 meter 3.5 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w800.webp">
NVIS 80 meter 3.5 mega hertz diagram
</a>
</figcaption>
</figure>
The antenna deployed in the field.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/antenna-nvis-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/antenna-nvis-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/antenna-nvis-w800.webp"
alt="N V I S antenna"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/antenna-nvis-w800.webp">
NVIS antenna
</a>
</figcaption>
</figure>

971
portfolio/pages/jp/plamo/model-kits/airplanes/military/ki-55.md
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344
portfolio/pages/jp/radio/antenna/nvis.md
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@ -1,344 +0,0 @@
---
logosub: "アマチュア無線家"
language: "jp"
title: "NVIS"
date: "2024-03-09"
---
<div class="alert alert-warning" role="alert">
<div>
<span>申し訳ありませんが、このページはまだ日本語に翻訳されていません。</span>
</div>
</div>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-setup-diagram-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-setup-diagram-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-setup-diagram-w800.webp"
alt="N V I S setup diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-setup-diagram-w800.webp">
NVIS setup diagram
</a>
</figcaption>
</figure>
A [FR-4 PCB](https://en.wikipedia.org/wiki/FR-4) is used. Half of it was scraped off for this design.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-scrape-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-scrape-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-scrape-w800.webp"
alt="N V I S P C B scrape"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-scrape-w800.webp">
NVIS PCB scrape
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-w800.webp"
alt="N V I S P C B"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-w800.webp">
NVIS PCB
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/covering-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/covering-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/covering-w800.webp"
alt="N V I S P C B liquid tape"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/covering-w800.webp">
NVIS PCB liquid tape
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/coax-connector-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/coax-connector-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/coax-connector-w800.webp"
alt="N V I S coax connector"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/coax-connector-w800.webp">
NVIS coax connector
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-2-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-2-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-2-w800.webp"
alt="N V I S P C B"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-2-w800.webp">
NVIS PCB
</a>
</figcaption>
</figure>
The antenne wires, coiled on a piece of pipe.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/coils-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/coils-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/coils-w800.webp"
alt="N V I S wire coils"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/coils-w800.webp">
NVIS wire coils
</a>
</figcaption>
</figure>
## Diagrams
Some 3d plots of this antenna on 10, 17, 20, 40 and 80 meters made with EZNEC software by PA0ABG. The antenna is most effective on 20, 40 and 80 meters, where the waves go upwards.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w800.webp"
alt="N V I S 10 meter 28 mega hertz diagram boven"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w800.webp">
NVIS 10 meter 28 mega hertz diagram top
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w800.webp"
alt="N V I S 10 meter 28 mega hertz diagram side"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w800.webp">
NVIS 10 meter 28 mega hertz diagram side
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-17m-18mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-17m-18mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-17m-18mhz-w800.webp"
alt="N V I S 17 meter 18 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-17m-18mhz-w800.webp">
NVIS 17 meter 18 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-20m-14mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-20m-14mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-20m-14mhz-w800.webp"
alt="N V I S 20 meter 14 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-20m-14mhz-w800.webp">
NVIS 20 meter 14 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-40m-7mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-40m-7mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-40m-7mhz-w800.webp"
alt="N V I S 40 meter 7 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-40m-7mhz-w800.webp">
NVIS 40 meter 7 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w800.webp"
alt="N V I S 80 meter 3.5 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w800.webp">
NVIS 80 meter 3.5 mega hertz diagram
</a>
</figcaption>
</figure>
The antenna deployed in the field.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/antenna-nvis-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/antenna-nvis-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/antenna-nvis-w800.webp"
alt="N V I S antenna"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/antenna-nvis-w800.webp">
NVIS antenna
</a>
</figcaption>
</figure>

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---
logosub: "Radiozendamateur"
language: "nl"
title: "NVIS"
date: "2024-03-09"
---
Deze [Near vertical incidence skywave antenne](https://en.wikipedia.org/wiki/Near_vertical_incidence_skywave) was voor me gemaakt door PA0ABG.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-setup-diagram-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-setup-diagram-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-setup-diagram-w800.webp"
alt="N V I S setup diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-setup-diagram-w800.webp">
NVIS setup diagram
</a>
</figcaption>
</figure>
Een [FR-4 PCB](https://en.wikipedia.org/wiki/FR-4) was gebruikt. De helft is er af geschraapt voor het design.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-scrape-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-scrape-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-scrape-w800.webp"
alt="N V I S P C B scrape"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-scrape-w800.webp">
NVIS PCB schrapen
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-w800.webp"
alt="N V I S P C B"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-w800.webp">
NVIS PCB
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/covering-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/covering-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/covering-w800.webp"
alt="N V I S P C B vloeibare maskering"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/covering-w800.webp">
NVIS PCB vloeibare maskering
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/coax-connector-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/coax-connector-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/coax-connector-w800.webp"
alt="N V I S coax connector"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/coax-connector-w800.webp">
NVIS coax connector
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-2-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/nvis-pcb-2-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/nvis-pcb-2-w800.webp"
alt="N V I S P C B"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/nvis-pcb-2-w800.webp">
NVIS PCB
</a>
</figcaption>
</figure>
The antenne wires, coiled on a piece of pipe.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/coils-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/coils-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/coils-w800.webp"
alt="N V I S draadspoelen"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/coils-w800.webp">
NVIS draadspoelen
</a>
</figcaption>
</figure>
## Diagrammen
Enkele 3d plotten van deze antenne op 10, 17, 20, 40 en 80 meter gemaakt met EZNEC software door PA0ABG. De antenne is het meest effectief op 20, 40 en 80 meter, waar de radiogolven naar boven gericht zijn.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w800.webp"
alt="N V I S 10 meter 28 mega hertz diagram boven"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-10m-28mhz-top-w800.webp">
NVIS 10 meter 28 mega hertz diagram boven
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w800.webp"
alt="N V I S 10 meter 28 mega hertz diagram zijkant"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-10m-28mhz-side-w800.webp">
NVIS 10 meter 28 mega hertz diagram zijkant
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-17m-18mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-17m-18mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-17m-18mhz-w800.webp"
alt="N V I S 17 meter 18 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-17m-18mhz-w800.webp">
NVIS 17 meter 18 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-17m-18mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-17m-18mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-17m-18mhz-w800.webp"
alt="N V I S 17 meter 18 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-17m-18mhz-w800.webp">
NVIS 17 meter 18 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-20m-14mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-20m-14mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-20m-14mhz-w800.webp"
alt="N V I S 20 meter 14 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-20m-14mhz-w800.webp">
NVIS 20 meter 14 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-40m-7mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-40m-7mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-40m-7mhz-w800.webp"
alt="N V I S 40 meter 7 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-40m-7mhz-w800.webp">
NVIS 40 meter 7 mega hertz diagram
</a>
</figcaption>
</figure>
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w800.webp"
alt="N V I S 80 meter 3.5 mega hertz diagram"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/eznec-80m-3.5mhz-w800.webp">
NVIS 80 meter 3.5 mega hertz diagram
</a>
</figcaption>
</figure>
De antenne opgesteld in het veld.
<figure class="text-center">
<picture class="d-flex justify-content-center">
<source
media="(max-width: 510px)"
srcset="/images/radio/antenna/nvis/antenna-nvis-w240.webp"
/>
<source
media="(max-width: 850px)"
srcset="/images/radio/antenna/nvis/antenna-nvis-w480.webp"
/>
<img
src="/images/radio/antenna/nvis/antenna-nvis-w800.webp"
alt="N V I S antenne"
class="img-fluid"
/>
</picture>
<figcaption class="figure-caption mt-2">
<a href="/images/radio/antenna/nvis/antenna-nvis-w800.webp">
NVIS antenne
</a>
</figcaption>
</figure>