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11    <meta name="author" content="73 de Serge Stroobandt, ON4AA" />
12    <meta name="description" content="Indispensable amateur radio information, including: multiband antenna designs, on-line HF propagation prediction, calculators, live ham radio and GNU/Linux." />
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23<a class="banner" href="../../index.html"><img src="../../images/hamwaves.com.banner.jpg" alt="hamwaves.com" /></a>
24<div id="header">
25<h1 class="title">hamwaves.com</h1>
26<h1 class="subtitle">Hello and welcome to my hobby web site!</h1>
27<h2 class="author">73 de Serge Stroobandt, ON4AA</h2>
28<h3 class="date">Copyright 2001–2024, <a target="_blank" href="https://creativecommons.org/licenses/by-nc-sa/4.0/">CC BY-NC-SA</a><br/><a href="index.md"><img src="../../images/markdown.transparent.png" alt="[M↓]" />Markdown</a>, <a href="makefile">makefile</a></h3>
29</div>
30<ul>
31<li><a target="_blank" href="https://en.wikipedia.org/wiki/Ham_radio"><img src="../images/ham.gif" alt="ham" /><em>What is</em> Amateur (Ham) Radio?</a></li>
32<li><a href="../../contests/en/index.html"><img src="../images/hazard.rf.png" alt="RF hazard" />Contest <em>Calendars</em></a></li>
33<li><a href="../../dx/en/index.html"><img src="../images/dx.png" alt="DX" />DX Resources</a></li>
34<li><a href="../../operating/en/index.html"><img src="../images/ham.operator.gif" alt="ham operator" />Operating, Logging &amp; CW</a></li>
35<li><a href="../../bandplans/en/index.html"><img src="../images/iaru.png" alt="IARU" />Band Plans</a></li>
36<li><a href="../../maps/en/index.html"><img src="../images/itu+cq.png" alt="ITU+CQ" /><em>Amateur Radio</em> Maps</a></li>
37<li><a href="../../qsl/en/index.html"><img src="../images/qsl.png" alt="QSL" />QSL-ing</a></li>
38<li><a href="../../shack/en/index.html"><img src="../images/yaesu.ft-990.png" alt="Yaesu FT-990" /><em>Shack</em> Projects</a></li>
39<li><a href="../../magazines/en/index.html"><img src="../images/papers.jpg" alt="papers" />Magazines</a></li>
40<li><a href="../../podcasts/en/index.html"><img src="../images/podcast.png" alt="podcast" />Podcasts</a></li>
41<li><a href="../../streams/en/index.html"><img src="../images/radio.png" alt="radio" />Internet Radio <em>Streams</em></a></li>
42<li class="donate"><a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&amp;business=MDY3AC25GHVFC&amp;lc=US&amp;amount=10&amp;currency_code=EUR&amp;item_name=One%20month%20worth%20of%20hosting%20expenses%20donated%20to%20hamwaves.com&amp;item_number=Single,%20one-time%20donation&amp;bn=PP-DonationsBF:btn_donate_LG.gif:NonHosted" target="_blank">Keep this site on‑line<br/><img src="../../images/donate.png" alt="Donate"/></a></li>
43<li><a href="../../propagation/index.html"><img src="../../images/black.png" id="propagation" alt="propagation" /><em>Real-Time</em> HF Propagation <em>Space Weather</em></a></li>
44<li><a target="_blank" href="http://websdr.org/"><img src="../images/websdr.jpg" alt="websdr" /><em>Listen to</em> Live Ham Radio</a></li>
45<li><a href="../../antennas/en/index.html"><img src="../images/antennas.gif" alt="antennas" /><em>Antenna</em> Designs</a></li>
46<li><a href="../../components/en/index.html"><img src="../images/doorknob.png" alt="doorknob capacitor" /><em>Antenna</em> Components</a></li>
47<li><a href="../../calculators/en/index.html"><img src="../images/calculator.png" alt="calculator" /><em>RF Engineering</em> Calculators</a></li>
48<li><a href="../../rope_access/en/index.html"><img src="../images/petzl.mgo.png" alt="Petzl MGO harness" />Fall Arrest, Rope Access &amp; Knots</a></li>
49<li><a href="../../qrp/en/index.html"><img src="../images/qrp.png" alt="QRP" /><em>Wilderness</em> QRP</a></li>
50<li><a href="../../prs/en/index.html"><img src="../images/aprs.png" alt="APRS" />Packet Reporting Systems</a></li>
51<li><a href="../../iot/en/index.html"><img src="../images/micropython.svg" alt="MicroPython" />Internet of Things <em>with MicroPython</em></a></li>
52<li><a href="../../ardf/index.html"><img src="../images/ardf.png" alt="ARDF" /><em>Amateur</em> Radio Direction Finding</a></li>
53<li><a href="../../hf.digital/en/index.html"><img src="../images/rtty.png" alt="RTTY" />Digital HF Modes</a></li>
54<li><a href="../../qrm/en/index.html"><img src="../images/qrm.png" alt="QRM" /><em>Sources of</em> RF Interference</a></li>
55<li><img src="../images/qrz.png" alt="QRZ" />
56<form name="qrz" action="index.html" onsubmit="return false">
57<input type="text" name="callsign" size="7" oninput="copyCall(this)" onkeypress="keyEval(this, event)"/><input type="button" value="Lookup Call" onclick="lookupCall(this)"/><input type="button" value="Clear" onclick="clearCall()"/>
58</form></li>
59<li><img src="../images/hamqth.png" alt="HamQTH" />
60<form name="hamqth" action="index.html" onsubmit="return false">
61<input type="text" name="callsign" size="7" oninput="copyCall(this)" onkeypress="keyEval(this, event)"/><input type="button" value="Lookup Call" onclick="lookupCall(this)"/><input type="button" value="Clear" onclick="clearCall()"/>
62</form></li>
63<li><a href="../../linux.ham/en/index.html"><img src="../images/tux.ham.png" alt="ham Tux" /><em>Amateur Radio with</em> GNU/Linux</a></li>
64<li><a href="../../it/en/index.html"><img src="../images/connectivity.jpg" alt="connectivity" />Information Technology</a></li>
65<li><a href="../../languages/en/index.html"><img src="../images/words.jpg" alt="words" /><em>Natural</em> Languages</a></li>
66<li><a href="../../wx/en/index.html"><img src="../../images/blue.png" id="precipitation_eu" alt="Europe precipitation" />Europe’s Weather</a></li>
67<li><a href="../../youth/en/index.html"><img src="../images/risx.jpg" alt="RiSX" /><em>Ham Radio</em> for the Youth</a></li>
68<li><a href="../../space/en/index.html"><img src="../images/shuttle.jpg" alt="shuttle" /><em>Ham Radio</em> In Space</a></li>
69<li><a href="../../stealth/en/index.html"><img src="../images/stealth.jpg" alt="stealth" />Surface Waves <em>on Stealth Aircraft</em></a></li>
70<li><a href="../../clubs/en/index.html"><img src="../images/roar.jpg" alt="roar" />Clubs, Associations &amp; Repeaters</a></li>
71<li><a href="../../plugs/en/index.html"><img src="../images/phone.plugs.jpg" alt="phone plugs" /><em>Shameless</em> Plugs</a></li>
72<li class="donate"><a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&amp;business=MDY3AC25GHVFC&amp;lc=US&amp;amount=10&amp;currency_code=EUR&amp;item_name=One%20month%20worth%20of%20hosting%20expenses%20donated%20to%20hamwaves.com&amp;item_number=Single,%20one-time%20donation&amp;bn=PP-DonationsBF:btn_donate_LG.gif:NonHosted" target="_blank">Keep this site on‑line<br/><img src="../../images/donate.png" alt="Donate"/></a></li>
73</ul>
74<script src="../js/lookup.js"></script>
vendor: 1 bytes, line 74
74
75<script>
76//<![CDATA[
77// @license magnet:?xt=urn:btih:1f739d935676111cfff4b4693e3816e664797050&dn=gpl-3.0.txt GPL-v3-or-Later
78
79
80    /*FUNCTIONS*/
81
82    function get_propagation() {
83        image = document.getElementById('propagation');
84        image.src = 'https://sdo.gsfc.nasa.gov/assets/img/latest/latest_256_0211.jpg' + '?' + new Date().getTime();
85        image.onerror = function() { this.onerror = null; this.src = '../../images/black.png'; };
86    }
87
88
89    function get_precipitation_eu() {
90        image = document.getElementById('precipitation_eu');
91        image.src = 'https://image.buienradar.nl/2.0/image/animation/RadarMapRainEU?height=80&width=80&extension=gif&renderBackground=True&renderBranding=False&renderText=True&history=6&forecast=6&skip=0' + '&' + new Date().getTime();
92        image.onerror = function() { this.onerror = null; this.src = '../../images/blue.png'; };
93    }
94
95
96    /*MAIN*/
97
98    get_propagation();
99    get_precipitation_eu();
100
101    setInterval(get_propagation,     1800*1000);    // in ms = every half hour
102    setInterval(get_precipitation_eu, 450*1000);    // in ms = every 7.5 minutes
103
104
105// @license-end
106//]]>
107</script>
107
108
109<div id="after">
110
111    <div id="leaderboard-ad">
112        <!-- 728x90 leaderboard-ad -->
113        <ins class="adsbygoogle" style="display:inline-block; width:728px; height:90px;"></ins>
114        
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114
115    </div>
116
117    <div id="ornament">5</div>
118
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123            <input type="hidden" name="business" value="MDY3AC25GHVFC" />
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125            <input type="hidden" name="amount" value="10" />
126            <input type="hidden" name="currency_code" value="EUR" />
127            <input type="hidden" name="item_name" value="One month worth of hosting expenses donated to hamwaves.com" />
128            <input type="hidden" name="item_number" value="Single, one-time donation" />
129            <input type="hidden" name="bn" value="PP-DonationsBF:btn_donate_LG.gif:NonHosted" />
130            <input type="image" src="../../images/donate.png" name="submit" alt="Donate" />
131        </form>
132    </div>
133
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136            <img alt="Creative Commons Licence" style="border-width:0" src="../../images/cc.by-nc-sa.png" /></a>
137        <br />This index page is licensed under a 
138        <a target="_blank" href="https://creativecommons.org/licenses/by-nc-sa/4.0/">
139            Creative&nbsp;Commons Attribution‑NonCommercial‑ShareAlike&nbsp;4.0 International&nbsp;License</a>.
140        <br />Other licensing available on request.
141    </div>
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144        <a target="_blank" href="https://www.gnu.org/licenses/gpl.html"><img alt="GNU GPL v3" src="../../images/gnu_gpl.v3.png" /></a>
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170        This page includes an open-source client-side script, written in <a target="_blank" href="https://www.python.org/"><img src="../../images/python.png" alt="Python" height="31" width="88" /></a> and
171        <br />transcoded by <a target="_blank" href="https://www.brython.info/"><img src="../../images/brython.png" alt="Brython" height="31" width="88" /></a> to make it run as secure <a target="_blank" href="https://en.wikipedia.org/wiki/JavaScript">JavaScript</a> in the browser.
172    </div>
173
174    <div id="pandoc">
175        Static <a target="_blank" href="https://en.wikipedia.org/wiki/HTML5">HTML5</a> generated from <a target="_blank" href="https://daringfireball.net/projects/markdown/syntax#overview">Markdown</a> by <a target="_blank" href="https://pandoc.org/MANUAL.html"><img src="../../images/pandoc.png" alt="Pandoc" height="31" width="88" /></a> <a target="_blank" href="https://github.com/jgm/pandoc/releases/tag/$(PANDOC)">$(PANDOC)</a> and
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176 and <a target="_blank" href="https://logological.org/gpp/">gpp</a> commands.
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192        <br />Use <a href="../../openpgp.public.key.txt">my OpenPGP public key</a> to encrypt messages for:
193        <br />
194        <br /><code>echo c2VyZ2VAc3Ryb29iYW5kdC5jb20K |base64 -d</code>
195    </div>
196
197    <div id="update">
198        The first version of this web site came on-line on Thursday, December 13, 2001.
199        <br />Last update of this index page: Saturday, March 23, 2024.
200    </div>
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