Gary @N8DMT<p><span class="h-card" translate="no"><a href="https://m.ai6yr.org/@ai6yr" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>ai6yr</span></a></span> Should be able to easily find similar on e-site and just copy/fudge dimensions to get started. Busy here too, but will add this to my “fun things to do when free” list. Might be a future ARRL Field Day operating category? Trash cans <> VHF or bed springs (bikes or autos) <> HF? 2X multiplier for unconventional antenna with pictures submitted for setup. <a href="https://mastodon.radio/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> <a href="https://mastodon.radio/tags/Antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antennas</span></a></p>
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#antennas
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Gary @N8DMT<p><span class="h-card" translate="no"><a href="https://m.ai6yr.org/@ai6yr" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>ai6yr</span></a></span> Any idea of the dimensions of the metal parts of these cans? Might be fun to fire up the antenna simulation tools and see where they resonate. May yield a rough formula after a couple of iterations in L, H, or W.<br><a href="https://mastodon.radio/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> <a href="https://mastodon.radio/tags/Antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antennas</span></a></p>
💧🌏 Greg Cocks<p>Landsat At Work – Better Wireless Communication - National Land Cover Database (NLCD), Based On Landsat, Helps Plan Clear Signal<br>--<br><a href="https://www.usgs.gov/centers/eros/news/landsat-work-a-path-better-wireless-communication" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">usgs.gov/centers/eros/news/lan</span><span class="invisible">dsat-work-a-path-better-wireless-communication</span></a> <-- shared article<br>--<br><a href="https://www.usgs.gov/landsat-missions" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">usgs.gov/landsat-missions</span><span class="invisible"></span></a> <-- shared about Landsat<br>--<br><a href="https://www.usgs.gov/centers/eros/science/annual-national-land-cover-database" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">usgs.gov/centers/eros/science/</span><span class="invisible">annual-national-land-cover-database</span></a> <-- shared about NLCD<br>--<br><a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GIS</span></a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatial</span></a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mapping</span></a> <a href="https://techhub.social/tags/Landsat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Landsat</span></a> <a href="https://techhub.social/tags/remotesensing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>remotesensing</span></a> <a href="https://techhub.social/tags/satellite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>satellite</span></a> <a href="https://techhub.social/tags/earthobservation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>earthobservation</span></a> <a href="https://techhub.social/tags/fedscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fedscience</span></a> <a href="https://techhub.social/tags/usecase" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>usecase</span></a> <a href="https://techhub.social/tags/USGS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>USGS</span></a> <a href="https://techhub.social/tags/EROS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>EROS</span></a> <a href="https://techhub.social/tags/cellphone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cellphone</span></a> <a href="https://techhub.social/tags/mobilephone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mobilephone</span></a> <a href="https://techhub.social/tags/telecommunications" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>telecommunications</span></a> <a href="https://techhub.social/tags/communications" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>communications</span></a> <a href="https://techhub.social/tags/cost" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cost</span></a> <a href="https://techhub.social/tags/benefit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>benefit</span></a> <a href="https://techhub.social/tags/wireless" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>wireless</span></a> <a href="https://techhub.social/tags/towers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>towers</span></a> <a href="https://techhub.social/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a> <a href="https://techhub.social/tags/landcover" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>landcover</span></a> <a href="https://techhub.social/tags/landuse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>landuse</span></a> <a href="https://techhub.social/tags/NLCD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NLCD</span></a> <a href="https://techhub.social/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radio</span></a> <a href="https://techhub.social/tags/frequency" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>frequency</span></a> <a href="https://techhub.social/tags/siting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>siting</span></a> <a href="https://techhub.social/tags/lineofsight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>lineofsight</span></a> <a href="https://techhub.social/tags/clutter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>clutter</span></a> <a href="https://techhub.social/tags/economics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>economics</span></a> <a href="https://techhub.social/tags/risk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>risk</span></a> <a href="https://techhub.social/tags/hazard" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hazard</span></a> <a href="https://techhub.social/tags/signal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>signal</span></a> <a href="https://techhub.social/tags/signalquality" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>signalquality</span></a> <a href="https://techhub.social/tags/USA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>USA</span></a> <a href="https://techhub.social/tags/value" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>value</span></a> <a href="https://techhub.social/tags/returnoninvestment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>returnoninvestment</span></a><br>@USGS @USGS_EROS</p>
VK2TTY he/him<p>Hang on, if short verticals lose efficiency due to their ground losses staying constant while the radiation resistance drops with their length, what’s the go with mag loops? <a href="https://mastodon.radio/tags/Antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antennas</span></a> <a href="https://mastodon.radio/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a></p>
Tim N7KOM<p>Submitted without comment. <a href="https://m.ai6yr.org/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> <a href="https://m.ai6yr.org/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a></p>
Bruce MacDonald<p>These antennas on a shelter building at Frontenac State Park in Minnesota attract attention.</p><p>What are they?</p><p>If you follow the coax lines inside you find they lead to a dusty old Home Depot storage bin in the corner, with a label—</p><p>"What is this thing?"</p><p>• This box, along with the antennas outside, is a Motus station</p><p>• Motus stations detect signals of tiny transmitters fitted to birds, bats, and insects to track their movements across North America</p><p>• The transmitters are harmless to animals, and eventually fall off</p><p>• At Frontenac State Park, we want to understand how the Mississippi River Valley is being used during migration</p><p>I was tempted to peek at the equipment inside … but was admonished not to … and I didn't.</p><p><a href="https://hachyderm.io/tags/Minnesota" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Minnesota</span></a> <a href="https://hachyderm.io/tags/outdoors" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>outdoors</span></a> <a href="https://hachyderm.io/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radio</span></a> <a href="https://hachyderm.io/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a> <a href="https://hachyderm.io/tags/tracking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tracking</span></a> <a href="https://hachyderm.io/tags/environment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>environment</span></a></p>
Dustin [BusySignal-KE2EFX]<p>Finalizing the "Wall of SDR" ...</p><p>P25 in to Trunk Recorder</p><p>Multiple SDR into Kismet Wireless for 315/433/915/1090 and also a BT TIC for BTLE monitoring</p><p>Multiple SDR into SDR++ Server for local Amateur Radio Repeaters monitoring</p><p>Dedicated line to another machine for just specific testing. </p><p>And then finally documented. </p><p><a href="https://infosec.exchange/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SDR</span></a> <a href="https://infosec.exchange/tags/SoftwareDefinedRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SoftwareDefinedRadio</span></a> <a href="https://infosec.exchange/tags/AmateurRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AmateurRadio</span></a> <a href="https://infosec.exchange/tags/HAMRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HAMRadio</span></a> <a href="https://infosec.exchange/tags/RTLSDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RTLSDR</span></a> <a href="https://infosec.exchange/tags/BladeRF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BladeRF</span></a> <a href="https://infosec.exchange/tags/KismetWireless" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>KismetWireless</span></a> <a href="https://infosec.exchange/tags/Kismet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Kismet</span></a> <a href="https://infosec.exchange/tags/WiFi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WiFi</span></a> <a href="https://infosec.exchange/tags/BTLE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BTLE</span></a> <a href="https://infosec.exchange/tags/Diagram" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Diagram</span></a> <a href="https://infosec.exchange/tags/Documentation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Documentation</span></a> <a href="https://infosec.exchange/tags/WiresWiresWires" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WiresWiresWires</span></a> <a href="https://infosec.exchange/tags/Antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antennas</span></a> <a href="https://infosec.exchange/tags/ADSB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ADSB</span></a> #1090</p>
Danie van der Merwe<p>Poynting Antennas is an internationally recognised manufacturer of antennas based in South Africa</p><p>“Poynting Antennas founder and CEO Andre Fourie is not only an entrepreneur and former Wits University professor; he and his team are arguably the top antenna engineers in the world. Poynting has over 50 patents and registered trademarks, including ...continues</p><p>See <a href="https://gadgeteer.co.za/poynting-antennas-is-an-internationally-recognised-manufacturer-of-antennas-based-in-south-africa/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">gadgeteer.co.za/poynting-anten</span><span class="invisible">nas-is-an-internationally-recognised-manufacturer-of-antennas-based-in-south-africa/</span></a></p><p><a href="https://mastodon.social/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a> <a href="https://mastodon.social/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radio</span></a> <a href="https://mastodon.social/tags/southafrica" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>southafrica</span></a> <a href="https://mastodon.social/tags/technology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>technology</span></a></p>
KE0FFT<p>I found this video today (it’s been on YouTube awhile) offering more technical info on the <a href="https://mastodon.hams.social/tags/ANFLR9" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ANFLR9</span></a> <a href="https://mastodon.hams.social/tags/ElephantCage" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElephantCage</span></a> <a href="https://mastodon.hams.social/tags/antenna" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antenna</span></a> than you’ll find anywhere without doing a lot of reading. The presentation includes this graphic, which is the first I’ve seen comparing the size of an <a href="https://mastodon.hams.social/tags/ElephantCageAntenna" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElephantCageAntenna</span></a> to the size of the U.S. Pentagon: <a href="https://youtu.be/4sgAGWPNSUQ" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">youtu.be/4sgAGWPNSUQ</span><span class="invisible"></span></a> </p><p><a href="https://mastodon.hams.social/tags/ColdWarHistory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ColdWarHistory</span></a> <a href="https://mastodon.hams.social/tags/ColdWarTech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ColdWarTech</span></a> <a href="https://mastodon.hams.social/tags/MilitaryIntelligence" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MilitaryIntelligence</span></a> <a href="https://mastodon.hams.social/tags/FLR9" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FLR9</span></a> <a href="https://mastodon.hams.social/tags/Antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antennas</span></a> <a href="https://mastodon.hams.social/tags/RAFChicksands" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAFChicksands</span></a> <a href="https://mastodon.hams.social/tags/Elmendorf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Elmendorf</span></a> <a href="https://mastodon.hams.social/tags/SanVitoItaly" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SanVitoItaly</span></a> <a href="https://mastodon.hams.social/tags/MisawaJapan" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MisawaJapan</span></a> <a href="https://mastodon.hams.social/tags/FieldStationAugsburg" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FieldStationAugsburg</span></a></p>
STAN/F1SLS<p>A bit of <a href="https://mastodon.radio/tags/3Dprinting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>3Dprinting</span></a> today: my <a href="https://mastodon.radio/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a> <a href="https://mastodon.radio/tags/callsign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>callsign</span></a> on a <a href="https://mastodon.radio/tags/MOLLE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MOLLE</span></a> <a href="https://mastodon.radio/tags/tag" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tag</span></a>.</p><p>They're made of the famous <a href="https://mastodon.radio/tags/BASF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BASF</span></a> orange <a href="https://mastodon.radio/tags/PET" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PET</span></a> I used for the <a href="https://mastodon.radio/tags/elkpak" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>elkpak</span></a> <a href="https://mastodon.radio/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a>.</p><p><a href="https://mastodon.radio/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a></p>
Ham Radio Outside the Box<p><strong>How Can A Lossy Wire on the Ground Work Better Than A Quarter Wave Vertical Antenna?</strong></p><p>Let’s get real here! If we lay a wire antenna on the ground, surely It can’t radiate more power than that cool-looking, expensive quarter-wave whip you just spent a small fortune to buy? Well, yes it can – but with a few caveats.</p><p>We can use a trick of geometry to support our claim. Our magic wire antenna has a footprint on the ground of only one square foot. The cool, costly ground-mounted whip has a footprint on the ground of only one square inch (ignoring the radial field). Bigger is better yes? Not convinced?</p><p>Okay, let’s unravel the geometric trickery while still maintaining our original claim. You might picture one square foot as a small square with equal sides of one foot. Therein lies the trickery. If we take 144 feet of wire of 1/12 inch diameter and tightly wind it into a square with sides of one foot, we’ll have a footprint on the ground of one square foot. Now let’s unwind that wire and stretch it out in a straight line along the ground. It is now 144ft long and 1/12 inch wide which is still one square foot.</p><p>Enough of the mathemagical sleight of hand; there is a much more convincing way of proving our point. Everybody knows that an antenna wire laid directly on the ground is lossy and, for once, everybody is right. But, only a few of us know how to take advantage of such a wire and make it a very useful antenna. I have personally enjoyed multiple QSOs with wires on the ground – despite the losses. I too was a skeptic until I actually tried it.</p><p>The theory of why it works has been covered in <a href="https://hamradiooutsidethebox.ca/2023/08/04/a-200ft-wire-antenna-up-zero-feet-how-does-it-perform/" rel="nofollow noopener noreferrer" target="_blank">previous posts on this blog</a>. The secret is that the wire has to be at least one wavelength (and preferably multiple wavelengths) long. The radiation pattern is a directional beam with low elevation.</p> <p>As we can see in the far field plots above, EZNEC predicts an elevation angle of 25 degrees and a beamwidth of 54 degrees. However, the antenna has a loss of 3.9dBi. If we allow for the fact that some signal is also radiated outside the main beam, let’s treat that loss as, say, 5dBi.</p><p>Now compare that to our quarter-wave vertical for which we can estimate unity gain with a beamwidth of 360 degrees.</p> <p>Now a clearer picture is beginning to emerge. If we calculate the RF energy within a beamwidth of 54 degrees for both antennas we can see how they compare. Let’s say our transceiver puts out 100 watts (I can hear QRP diehards loading for bear here). The lossy wire on the ground will only radiate 30 watts. The quarter-wave vertical will radiate all 100 watts but spread over 360 degrees. Within the beamwidth of 54 degrees, the vertical will radiate only 15 watts!</p><p>Gadzooks! A reel of wire costs only a few bucks but can radiate twice as much power as a shiny whip costing significantly more? Date check: yes it’s still January, not the first of April. Admittedly, this is a theoretical analysis lacking rigorous procedures for a proper engineering investigation. But, once again, I have personally made QSOs with more than one wire-on-the-ground antenna. Were my signal reports very poor? Absolutely not. This is not a spoof post, trust me.</p><p>There is another advantage of this wire-on-the-ground antenna when compared to a quarter-wave whip. Vertical antennas are generally considered to be susceptible to vertically-polarized noise. A wire on the ground is relatively immune to noise because of its inherent signal loss.</p><p>I don’t recommend selling your shiny, expensive whip and replacing it with some wire strewn across your backyard. However, imagine the possibilities when operating out in the Big Blue Sky Shack. A long wire can be concealed in a ditch, or in tall grass. Store it on a fly-fishing reel, then when you have finished operating simply reel it back in. It is the ultimate stealth antenna which could also be useful in a HOA situation.</p><p><strong>Help support <em>HamRadioOutsidetheBox</em></strong></p><p>No “tip-jar”, “buy me a coffee”, Patreon, or Amazon links here. I enjoy my hobby and I enjoy writing about it. If you would like to support this blog please <strong>follow/<em>subscribe</em></strong> using the link at the bottom of my <a href="https://hamradiooutsidethebox.wordpress.com" rel="nofollow noopener noreferrer" target="_blank">home page</a>, or <strong><em>like</em></strong>, <strong><em>comment</em></strong> (links at the bottom of each post), <strong><em>repost</em></strong> or <strong><em>share</em></strong> links to my posts on social media. If you would like to email me directly you will find my email address on my <a href="https://www.qrz.com/db/va3kot" rel="nofollow noopener noreferrer" target="_blank">QRZ.com</a> page. Thank you!</p><p>The following copyright notice applies to all content on this blog.</p><p><a rel="nofollow noopener noreferrer" href="http://creativecommons.org/licenses/by-nc-nd/4.0/" target="_blank"></a><br>This work is licensed under a <a rel="nofollow noopener noreferrer" href="http://creativecommons.org/licenses/by-nc-nd/4.0/" target="_blank">Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License</a>.</p><p></p><p><a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://hamradiooutsidethebox.ca/tag/amateur-radio-2/" target="_blank">#AmateurRadio</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://hamradiooutsidethebox.ca/tag/antennas/" target="_blank">#Antennas</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://hamradiooutsidethebox.ca/tag/ground/" target="_blank">#Ground</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://hamradiooutsidethebox.ca/tag/outdoor-ops/" target="_blank">#OutdoorOps</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://hamradiooutsidethebox.ca/tag/portable/" target="_blank">#Portable</a></p>
Bruce MacDonald<p>Unusual antenna in the news.</p><p>"The CHIME array outside Penticton, British Columbia, is a novel radio telescope that has no moving parts. Designed to map hydrogen gas in the universe, it is also ideal for detecting fast radio bursts."<br><a href="https://news.berkeley.edu/2025/01/21/astronomers-thought-they-understood-fast-radio-bursts-a-recent-one-calls-that-into-question/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">news.berkeley.edu/2025/01/21/a</span><span class="invisible">stronomers-thought-they-understood-fast-radio-bursts-a-recent-one-calls-that-into-question/</span></a></p><p><a href="https://hachyderm.io/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://hachyderm.io/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radio</span></a> <a href="https://hachyderm.io/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a></p>
Bruce MacDonald<p>The late Bob Heil K9EID describes using a bird dog training device to throw a wire over a tree. </p><p>"The neighbors thought I was out on the shooting range. One of them came over. I mean, it is amazing. That thing went—not kidding you—at least 150 to 200 feet high."</p><p><a href="https://www.youtube.com/watch?v=xHuzVcfwE28" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=xHuzVcfwE2</span><span class="invisible">8</span></a></p><p><a href="https://hachyderm.io/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> <a href="https://hachyderm.io/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a> <a href="https://hachyderm.io/tags/trees" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>trees</span></a></p>
ILYA KEMPI 📸 🖌️🎵<p>Three antennas</p><p><a href="https://mastodon.social/tags/myfotokempi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>myfotokempi</span></a> </p><p><a href="https://mastodon.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://mastodon.social/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photo</span></a> <a href="https://mastodon.social/tags/fotografie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fotografie</span></a> <a href="https://mastodon.social/tags/architecture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>architecture</span></a> <a href="https://mastodon.social/tags/minimalism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>minimalism</span></a> <a href="https://mastodon.social/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a> <a href="https://mastodon.social/tags/RicohGRIIIx" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RicohGRIIIx</span></a> <a href="https://mastodon.social/tags/monochrome" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>monochrome</span></a> <a href="https://mastodon.social/tags/blackandwhite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>blackandwhite</span></a> <a href="https://mastodon.social/tags/bnwphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bnwphotography</span></a></p>
Krononaut Moon 🌕 2025 Sep 07<p>Monday is January's <a href="https://aus.social/tags/FullMoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FullMoon</span></a> — the <a href="https://aus.social/tags/WolfMoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WolfMoon</span></a>. </p><p>It's now exactly 2 <a href="https://aus.social/tags/lunar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>lunar</span></a> cycles to the <a href="https://aus.social/tags/TotalLunarEclipse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TotalLunarEclipse</span></a> on 2025 Mar 14, the Night of the <a href="https://aus.social/tags/KrononautMoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>KrononautMoon</span></a>, and our invitation to <a href="https://aus.social/tags/TimeTravelers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TimeTravelers</span></a> to come visit or send us a <a href="https://aus.social/tags/quantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>quantum</span></a> <a href="https://aus.social/tags/signal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>signal</span></a>. (To be followed by 2 more Total Lunar Eclipses in the next year!) </p><p>Here's our extended version <a href="https://aus.social/tags/Checklist" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Checklist</span></a> for the Night of the Krononaut Moon, a celebration of Time Travel. (Original post located here: <a href="https://me.dm/@KronoMoon/113610202533882675" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">me.dm/@KronoMoon/1136102025338</span><span class="invisible">82675</span></a>).</p><p>☑️ Coming our way next on 2025 Mar 14 <a href="https://aus.social/tags/UTC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>UTC</span></a> 07:00, 2 months from now.</p><p>☑️ <a href="https://aus.social/tags/Observe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Observe</span></a> the <a href="https://aus.social/tags/Moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moon</span></a> & <a href="https://aus.social/tags/stars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>stars</span></a> that night, wherever & however you like, with friends & colleagues or on your own. Local <a href="https://aus.social/tags/times" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>times</span></a> flexible.</p><p>☑️ <a href="https://aus.social/tags/Connect" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Connect</span></a> with the <a href="https://aus.social/tags/cosmos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cosmos</span></a> & with your <a href="https://aus.social/tags/past" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>past</span></a> & <a href="https://aus.social/tags/future" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>future</span></a> <a href="https://aus.social/tags/selves" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>selves</span></a>. Send a <a href="https://aus.social/tags/signal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>signal</span></a> to <a href="https://aus.social/tags/beings" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>beings</span></a> in the <a href="https://aus.social/tags/future" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>future</span></a>(s). <a href="https://aus.social/tags/Candles" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Candles</span></a> & safe <a href="https://aus.social/tags/campfires" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>campfires</span></a> are good; <a href="https://aus.social/tags/music" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>music</span></a> & <a href="https://aus.social/tags/dancing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dancing</span></a> are good; <a href="https://aus.social/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radio</span></a> <a href="https://aus.social/tags/wave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>wave</span></a> <a href="https://aus.social/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a> are good. Be experimental! </p><p>☑️ Click & share many <a href="https://aus.social/tags/photos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photos</span></a> of the <a href="https://aus.social/tags/Moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moon</span></a>, with you (and your <a href="https://aus.social/tags/family" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>family</span></a> / <a href="https://aus.social/tags/pets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pets</span></a>) under it — what we call a <a href="https://aus.social/tags/Moonsie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moonsie</span></a> — and any nearby <a href="https://aus.social/tags/UFOs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>UFOs</span></a>. Share your <a href="https://aus.social/tags/images" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>images</span></a> with <span class="h-card" translate="no"><a href="https://me.dm/@KronoMoon" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>KronoMoon</span></a></span> & <span class="h-card" translate="no"><a href="https://universeodon.com/@KronoMoonPhotos" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>KronoMoonPhotos</span></a></span>. </p><p>☑️ <a href="https://aus.social/tags/Enjoy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Enjoy</span></a> a deepened <a href="https://aus.social/tags/moment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>moment</span></a> of <a href="https://aus.social/tags/peace" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>peace</span></a>, <a href="https://aus.social/tags/love" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>love</span></a>, <a href="https://aus.social/tags/authenticity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>authenticity</span></a> & <a href="https://aus.social/tags/meaning" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>meaning</span></a>, with other <a href="https://aus.social/tags/Mastodonians" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mastodonians</span></a> around the <a href="https://aus.social/tags/world" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>world</span></a> & <a href="https://aus.social/tags/beyond" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>beyond</span></a> — wherever you are. </p><p>📽️ <a href="https://svs.gsfc.nasa.gov/4155/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">svs.gsfc.nasa.gov/4155/</span><span class="invisible"></span></a> </p><p><a href="https://aus.social/tags/Time" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Time</span></a> <a href="https://aus.social/tags/Timelessnes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Timelessnes</span></a> <a href="https://aus.social/tags/TimeTravel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TimeTravel</span></a> <a href="https://aus.social/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>physics</span></a> <a href="https://aus.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://aus.social/tags/philosophy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>philosophy</span></a> <a href="https://aus.social/tags/spirituality" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spirituality</span></a> <a href="https://aus.social/tags/cosmology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cosmology</span></a> <a href="https://aus.social/tags/conceptual" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>conceptual</span></a> <a href="https://aus.social/tags/art" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>art</span></a> <a href="https://aus.social/tags/uap" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>uap</span></a> <a href="https://aus.social/tags/boost" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>boost</span></a> <a href="https://aus.social/tags/Kronodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Kronodon</span></a></p>
Pete Prodoehl 🍕<p>I borrowed a NanoVNA from <span class="h-card" translate="no"><a href="https://rhizospherelabs.com/@mathias" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>mathias</span></a></span> and tested my Meshtastic antennas... </p><p>The one shown here (with a 915MHz sticker) appears to actually be okay! It was an AliExpress find.</p><p>(For anyone smarter than me, does this look good? SWR of 1.225 acceptable?)</p><p>The antennas that ship with the Heltec V3 boards seem to be pretty bad at 3.998. (Well, they do come free with it.)</p><p><a href="https://mastodon.social/tags/meshtastic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>meshtastic</span></a> <a href="https://mastodon.social/tags/nanovna" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nanovna</span></a> <a href="https://mastodon.social/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a></p>
KE0FFT<p><a href="https://mastodon.hams.social/tags/ICQPodcast" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ICQPodcast</span></a> Episode 446 - <a href="https://mastodon.hams.social/tags/PortableAntennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PortableAntennas</span></a> Data Review<br>December 29, 2024 Colin Butler ~ “In this episode, we join Martin Butler M1MRB, Dan Romanchik KB6NU, Caryn Eve Murray KD2GUT, Edmund Spicer M0MNG, and Ed Durrant DD5LP to discuss the latest <a href="https://mastodon.hams.social/tags/AmateurRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AmateurRadio</span></a> / <a href="https://mastodon.hams.social/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> news. Colin Butler (M6BOY) rounds up the news in brief and the episode's feature is Portable <a href="https://mastodon.hams.social/tags/Antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antennas</span></a> Data Review.” <a href="https://mastodon.hams.social/tags/KE0FFTpodcasts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>KE0FFTpodcasts</span></a> <a href="https://mastodon.hams.social/tags/Podcast" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Podcast</span></a> ~ <a href="https://www.icqpodcast.com/download-the-show/2024/12/29/icqpodcast-episode-446-portable-antennas-data-review" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">icqpodcast.com/download-the-sh</span><span class="invisible">ow/2024/12/29/icqpodcast-episode-446-portable-antennas-data-review</span></a></p>
Profoundly Nerdy<p>Are any of the stealthy HF flagpole antennas any good? Do they generally have radials? I'm skeptical of tuner-only vertical antenna designs with no radials. <a href="https://bitbang.social/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a> <a href="https://bitbang.social/tags/amateurradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>amateurradio</span></a> <a href="https://bitbang.social/tags/HF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HF</span></a> <a href="https://bitbang.social/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a> <a href="https://bitbang.social/tags/stealthantenna" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>stealthantenna</span></a></p>
Tim N7KOM<p>Dual band portable sats yagi is complete! Now I just need a pass to test it out. <a href="https://m.ai6yr.org/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> <a href="https://m.ai6yr.org/tags/Antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antennas</span></a> <a href="https://m.ai6yr.org/tags/DIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DIY</span></a></p>
Dennis "D.C." Dietrich<p>Question for the hams on here since I'm finding somewhat contradictory information on the Internet: Do magnetic loop antennas work (well enough) indoors on 10m? Can't permanently install an antenna or even span one across the backyard (plus, to make things worse, transmitting from the ground floor).<br><a href="https://social.advancedsoftware.engineering/tags/ham" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ham</span></a> <a href="https://social.advancedsoftware.engineering/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> <a href="https://social.advancedsoftware.engineering/tags/AmateurRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AmateurRadio</span></a> <a href="https://social.advancedsoftware.engineering/tags/antennas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antennas</span></a> <a href="https://social.advancedsoftware.engineering/tags/MagLoop" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MagLoop</span></a> <a href="https://social.advancedsoftware.engineering/tags/MagneticLoop" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MagneticLoop</span></a> <a href="https://social.advancedsoftware.engineering/tags/shortwave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>shortwave</span></a></p>
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