{"id":46931,"date":"2020-12-15T09:05:43","date_gmt":"2020-12-15T13:05:43","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=46931"},"modified":"2021-01-11T07:19:49","modified_gmt":"2021-01-11T11:19:49","slug":"tom-builds-a-portable-loop-on-ground-antenna","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2020\/12\/tom-builds-a-portable-loop-on-ground-antenna\/","title":{"rendered":"Tom builds a portable Loop-On-Ground antenna"},"content":{"rendered":"<p><em><strong>Many thanks to SWLing Post contributor,\u00a0<a href=\"https:\/\/swling.com\/blog\/tag\/toml\/\">TomL<\/a>, who shares the following guest post:<\/strong><\/em><\/p>\n<hr \/>\n<h1>My First Loop-On-Ground antenna<\/h1>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/LoopOnGround.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46937\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/LoopOnGround.jpg\" alt=\"\" width=\"680\" height=\"440\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/LoopOnGround.jpg 680w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/LoopOnGround-300x194.jpg 300w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/LoopOnGround-624x404.jpg 624w\" sizes=\"auto, (max-width: 680px) 100vw, 680px\" \/><\/a><\/p>\n<p>A number of people have mentioned the <strong>Loop On Ground (LOG)<\/strong> antenna in the past as a good receive-only antenna.\u00a0 I did some research but could only find a few examples by amateur radio operators.<\/p>\n<p>Matt Roberts (KK5JY) has a good article including some antenna theory and measurements, you can find it here:<\/p>\n<p><a href=\"http:\/\/www.kk5jy.net\/LoG\/\" target=\"_blank\" rel=\"noopener\">http:\/\/www.kk5jy.net\/LoG\/\u00a0<\/a><\/p>\n<p>Someone named Tom (KG3V) has a write up on it but it is a little short on details:<\/p>\n<p><a href=\"https:\/\/kg3v.com\/2020\/01\/04\/loop-on-ground-the-simplest-receive-antenna-you-will-ever-build-and-it-works\/\" target=\"_blank\" rel=\"noopener\">https:\/\/kg3v.com\/2020\/01\/04\/loop-on-ground-the-simplest-receive-antenna-you-will-ever-build-and-it-works\/<\/a><\/p>\n<p>Stana Horzepa (WA1LOU) has something similar:<\/p>\n<p><a href=\"https:\/\/tapr.org\/loop-on-ground-log-antenna\/\" target=\"_blank\" rel=\"noopener\">https:\/\/tapr.org\/loop-on-ground-log-antenna\/<\/a><\/p>\n<p>I also read somewhere that for transmitting, a LOG antenna is useless as it radiates much of the energy right into the ground!\u00a0 But I didn&#8217;t care about that.\u00a0 I needed something for receive I can deploy easily without supports and take down just as easily.\u00a0 As you may <a href=\"https:\/\/swling.com\/blog\/tag\/toml\">recall<\/a>, my home condo is literally saturated with noise and I cannot null it out.\u00a0 So a wire looped on the ground is supposed to work?\u00a0 You bet it does!<\/p>\n<p>Of course, there are some conditions to meet.\u00a0 There has to be enough flat ground away from people or pets (or lawn mowers!) who would get tangled in the wire on the ground.\u00a0 The wire should be as close to the ground as possible (although I had good results laying the wire on top of cut grass).\u00a0 The loop of wire can vary in circumference from about 20 feet to 150 feet (the shorter length will stay in an omnidirectional pattern higher in frequency but lower in signal pickup and vice-versa for the longer length).\u00a0 The wire needs to be insulated.\u00a0 That&#8217;s about it!<\/p>\n<p>So, off to the hardware store to buy a cheap spool of 100 foot 18 gauge speaker wire.\u00a0 But, the articles mention using a balun and they all made their own.\u00a0 I did not feel like doing that (I am not that good at making things from scratch) and I did not want to spend money ordering one. More reading somewhere informed me that my existing Wellbrook Medium Aperture loop amplifier has a built-in balun at the antenna side of the device.\u00a0 Hallelujah!<\/p>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/AntennaAmp-e1607948722157.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46934\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/AntennaAmp-e1607948722157.jpg\" alt=\"\" width=\"800\" height=\"719\" \/><\/a><\/p>\n<p>I bundled together the wire, Wellbrook parts and battery supply, small laptop and Airspy HF+ to my favorite Lake Nelson Forest Preserve.\u00a0 The shelter there is little used and is adjacent to the prairie with cut grass.\u00a0 It did take a good 15 minutes to lay out the 100 feet of wire on the ground while trying to keep it as flat as possible. And I did not have enough space for a circle, so I ended up with an oblong shape.\u00a0 The long sides are facing directly north-south, so in theory (I think) this gives me an oblong shaped reception pattern east-west.\u00a0 The photo shows half of the wire laying on the grass.<\/p>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/100footwire-e1607948692950.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46932\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/100footwire-e1607948692950.jpg\" alt=\"\" width=\"800\" height=\"600\" \/><\/a><\/p>\n<p>I ended up with this setup on a picnic table at the rear end of the shelter.\u00a0 The coax wire goes from the Wellbrook amp into its power module, then to a Cross Country Wireless preselector, then to the Apirspy HF+ and laptop.<\/p>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/Setup-e1607948750294.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46938\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/Setup-e1607948750294.jpg\" alt=\"\" width=\"800\" height=\"449\" \/><\/a><\/p>\n<p>I was really impressed by the signal strength of the usual suspects like Radio Nacional da Amazonia.\u00a0 I could see that the Wellbrook amp was boosting signals across the board with only a little extra noise.<\/p>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/SignalStrength-e1607948761985.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46939\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/SignalStrength-e1607948761985.jpg\" alt=\"\" width=\"800\" height=\"600\" \/><\/a><\/p>\n<p>I use the preselector to try to keep the Airspy radio from overloading, especially mediumwave broadcast signals which can sound like a small amount of extra \u201chash\u201d type noise in the background.\u00a0 I have since added into the accessory chain an old Kiwa Electronics BCB filter that does a great job of knocking down the frequencies below 2 MHz.<\/p>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/BCBfilter-e1607948734368.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46935\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/BCBfilter-e1607948734368.jpg\" alt=\"\" width=\"800\" height=\"800\" \/><\/a><\/p>\n<p>I have also since added a water resistant box to enclose the Wellbrook amp to keep it safe from getting stepped on or too wet.<\/p>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/AmpBox-e1607948707101.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46933\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2020\/12\/AmpBox-e1607948707101.jpg\" alt=\"\" width=\"800\" height=\"600\" \/><\/a><\/p>\n<p>Also, a couple of weeks later I was able to go to a campgound and try out 60 feet of wire but the result was noisier since I was surrounded by RV vehicles in a crowded campsite.\u00a0 It was not horrible and I was able to listen to some good radio stations but location can matter with any antenna.<\/p>\n<p>I hope you like the recordings below.\u00a0 Because of some serious health issues this summer, these May 31 2020 recordings &amp; report are just being published now (I am recovering slowly but surely!).\u00a0 My small laptop is under-powered, so I was only able to record MP3 files one at a time.\u00a0 It kept me busy as I went from one frequency to the next and kept recording anything I heard.\u00a0 I was able to hear a couple of stations I never heard before and that is a success in my book.<\/p>\n<p>It remains to be seen if this antenna is as good as <a href=\"https:\/\/swling.com\/blog\/2018\/07\/guest-post-backpack-shack-3-0-part-3\/\">my 19 foot vertical antenna attached to the top of the car roof<\/a>, especially low-angle DX signals.\u00a0 Maybe you will have the chance to experiment as well and share your experience, too.\u00a0 Now, will a small loop-on-ground antenna around my car parked late at night at a far corner of the grocery store work OK???\u00a0 I will have to try it!<\/p>\n<p>Recordings (crank up the volume if it is too weak):<\/p>\n<p><strong>22:00 UTC, Radio Saudi (Arabic) 11915 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h00m55s%20-%20RSaudi%20Arabic%2011.915%20MHz%2C%20ECSS-U%20-%20Riyadh.mp3?_=1\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h00m55s%20-%20RSaudi%20Arabic%2011.915%20MHz%2C%20ECSS-U%20-%20Riyadh.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h00m55s%20-%20RSaudi%20Arabic%2011.915%20MHz%2C%20ECSS-U%20-%20Riyadh.mp3<\/a><\/audio>\n<p><strong>22:04 UTC, KDSA Adventist Radio (Indonesian) 11955 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-2\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h04m17s%20-%20KDSA%20Adventist%20Guam%20Indonesian%2011.955%20MHz%2C%20ECSS-L%20-%20Agat.mp3?_=2\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h04m17s%20-%20KDSA%20Adventist%20Guam%20Indonesian%2011.955%20MHz%2C%20ECSS-L%20-%20Agat.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h04m17s%20-%20KDSA%20Adventist%20Guam%20Indonesian%2011.955%20MHz%2C%20ECSS-L%20-%20Agat.mp3<\/a><\/audio>\n<p><strong>22:14 UTC, KDSA Adventist Radio (English) 12040 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-3\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h14m34s%20-%20KDSA%20Adventist%20Guam%20English%2012.04%20MHz%2C%20ECSS-L%20-%20Agat.mp3?_=3\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h14m34s%20-%20KDSA%20Adventist%20Guam%20English%2012.04%20MHz%2C%20ECSS-L%20-%20Agat.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h14m34s%20-%20KDSA%20Adventist%20Guam%20English%2012.04%20MHz%2C%20ECSS-L%20-%20Agat.mp3<\/a><\/audio>\n<p><strong>22:20 UTC, Voice of Korea (Japanese) 11865 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-4\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h20m57s%20-%20VoKorea%20Japanese%20Kujang%2011.865%20MHz%2C%20ECSS-U.mp3?_=4\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h20m57s%20-%20VoKorea%20Japanese%20Kujang%2011.865%20MHz%2C%20ECSS-U.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h20m57s%20-%20VoKorea%20Japanese%20Kujang%2011.865%20MHz%2C%20ECSS-U.mp3<\/a><\/audio>\n<p><strong>22:23 UTC, Yemen Radio (heavily jammed) 11860 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-5\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h23m12s%20-%20YemenRadio%20heavily%20jammed%2011.86%20MHz%2C%20ECSS-L.mp3?_=5\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h23m12s%20-%20YemenRadio%20heavily%20jammed%2011.86%20MHz%2C%20ECSS-L.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h23m12s%20-%20YemenRadio%20heavily%20jammed%2011.86%20MHz%2C%20ECSS-L.mp3<\/a><\/audio>\n<p><strong>22:35 UTC, Radio Brazil Central (Portuguese) 11815 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-6\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h35m05s%20-%20RBrazilCentral%20Portuguese%2011.815%20MHz%2C%20ECSS-L%20-%20Goiania.mp3?_=6\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h35m05s%20-%20RBrazilCentral%20Portuguese%2011.815%20MHz%2C%20ECSS-L%20-%20Goiania.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h35m05s%20-%20RBrazilCentral%20Portuguese%2011.815%20MHz%2C%20ECSS-L%20-%20Goiania.mp3<\/a><\/audio>\n<p><strong>22:50 UTC, WWV booming in 10000 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-7\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h50m02s%20-%20WWV%2010%20MHz%2C%20ECSS-L.mp3?_=7\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h50m02s%20-%20WWV%2010%20MHz%2C%20ECSS-L.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2017h50m02s%20-%20WWV%2010%20MHz%2C%20ECSS-L.mp3<\/a><\/audio>\n<p><strong>23:11 UTC, UnKnown (might be FEBC) 9795 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-8\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h11m08s%20-%20Unknown%20Might%20be%20FEBC%209.795%20MHz%2C%20ECSS-L.mp3?_=8\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h11m08s%20-%20Unknown%20Might%20be%20FEBC%209.795%20MHz%2C%20ECSS-L.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h11m08s%20-%20Unknown%20Might%20be%20FEBC%209.795%20MHz%2C%20ECSS-L.mp3<\/a><\/audio>\n<p><strong>23:15 UTC, China Radio Int&#8217;l (Spanish teaching Chinese, from Kashi) 9800 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-9\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h15m47s%20-%20CRI%20SP%20Kashi%20Teaching%20Chinese%209.8%20MHz%2C%20SAM.mp3?_=9\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h15m47s%20-%20CRI%20SP%20Kashi%20Teaching%20Chinese%209.8%20MHz%2C%20SAM.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h15m47s%20-%20CRI%20SP%20Kashi%20Teaching%20Chinese%209.8%20MHz%2C%20SAM.mp3<\/a><\/audio>\n<p><strong>23:17 UTC, China Radio Int&#8217;l Business Radio (from Xianyang) 9820 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-10\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h17m23s%20-%20CRI%20Chinese%20Bus%20Radio%20Xianyang%209.82%20MHz%2C%20ECSS-U.mp3?_=10\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h17m23s%20-%20CRI%20Chinese%20Bus%20Radio%20Xianyang%209.82%20MHz%2C%20ECSS-U.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h17m23s%20-%20CRI%20Chinese%20Bus%20Radio%20Xianyang%209.82%20MHz%2C%20ECSS-U.mp3<\/a><\/audio>\n<p><strong>23:19 UTC, China Radio Int&#8217;l (Chinese from Urumqi) 9865 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-11\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h19m59s%20-%20CRI%20Chinese%20Urumqi%209.865%20MHz%2C%20ECSS-U.mp3?_=11\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h19m59s%20-%20CRI%20Chinese%20Urumqi%209.865%20MHz%2C%20ECSS-U.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h19m59s%20-%20CRI%20Chinese%20Urumqi%209.865%20MHz%2C%20ECSS-U.mp3<\/a><\/audio>\n<p><strong>23:21 UTC, Voice of Korea (Korean) 9875 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-12\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h21m17s%20-%20VoKorea%20Korean%209.875%20MHz%2C%20ECSS-U.mp3?_=12\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h21m17s%20-%20VoKorea%20Korean%209.875%20MHz%2C%20ECSS-U.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h21m17s%20-%20VoKorea%20Korean%209.875%20MHz%2C%20ECSS-U.mp3<\/a><\/audio>\n<p><strong>23:23 UTC, Maybe Radio Taiwan without jamming from CNR 9900 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-13\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h23m48s%20-%20RTaiwan%20without%20jamming%20from%20CNR%209.9%20MHz%2C%20ECSS-L.mp3?_=13\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h23m48s%20-%20RTaiwan%20without%20jamming%20from%20CNR%209.9%20MHz%2C%20ECSS-L.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h23m48s%20-%20RTaiwan%20without%20jamming%20from%20CNR%209.9%20MHz%2C%20ECSS-L.mp3<\/a><\/audio>\n<p><strong>23:34 UTC, China Radio Int&#8217;l (Chinese from Bamako Mali) 7295 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-14\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h34m07s%20-%20CRI%20Chinese%20Bamako%207.295%20MHz%2C%20ECSS-L.mp3?_=14\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h34m07s%20-%20CRI%20Chinese%20Bamako%207.295%20MHz%2C%20ECSS-L.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h34m07s%20-%20CRI%20Chinese%20Bamako%207.295%20MHz%2C%20ECSS-L.mp3<\/a><\/audio>\n<p><strong>23:43 UTC, Radio Nacional da Amazonia 6180 kHz (&amp; 11780 kHz around 40 seconds)<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-15\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h43m39s%20-%20RNacionalAmazonia%206.18%20and%2011.780%20MHz%2C%20ECSS-L.mp3?_=15\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h43m39s%20-%20RNacionalAmazonia%206.18%20and%2011.780%20MHz%2C%20ECSS-L.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h43m39s%20-%20RNacionalAmazonia%206.18%20and%2011.780%20MHz%2C%20ECSS-L.mp3<\/a><\/audio>\n<p><strong>23:50 UTC, MAYBE China PBS from Xinjiang in Kazakh (nothing else listed on schedules) 6015 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-16\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h50m53s%20-%20Maybe%20China%20PBS%20from%20Xinjiang%20in%20Kazakh%206.015%20MHz%2C%20ECSS-L.mp3?_=16\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h50m53s%20-%20Maybe%20China%20PBS%20from%20Xinjiang%20in%20Kazakh%206.015%20MHz%2C%20ECSS-L.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h50m53s%20-%20Maybe%20China%20PBS%20from%20Xinjiang%20in%20Kazakh%206.015%20MHz%2C%20ECSS-L.mp3<\/a><\/audio>\n<p><strong>23:56 UTC, Radio Mali (French announcer humming to music and acting crazy) 5995 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-17\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h56m35s%20-%20RMali%20French%20Bamako%205.995%20MHz%2C%20ECSS-U%20short.mp3?_=17\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h56m35s%20-%20RMali%20French%20Bamako%205.995%20MHz%2C%20ECSS-U%20short.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2018h56m35s%20-%20RMali%20French%20Bamako%205.995%20MHz%2C%20ECSS-U%20short.mp3<\/a><\/audio>\n<p><strong>00:07 UTC, Radio Rebelde (Spanish w\/clear signal, Bauta, Cuba) 5025 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-18\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h07m54s%20-%20RRebelde%20Spanish%20Bauta%205.025%20MHz%2C%20ECSS-U.mp3?_=18\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h07m54s%20-%20RRebelde%20Spanish%20Bauta%205.025%20MHz%2C%20ECSS-U.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h07m54s%20-%20RRebelde%20Spanish%20Bauta%205.025%20MHz%2C%20ECSS-U.mp3<\/a><\/audio>\n<p><strong>00:15 UTC, 75 meter Amateur Radio 3913 kHz (LSB)<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-19\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h15m55s%20-%2075meter%20Amateur%20Radio%203.913%20MHz%2C%20LSB.mp3?_=19\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h15m55s%20-%2075meter%20Amateur%20Radio%203.913%20MHz%2C%20LSB.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h15m55s%20-%2075meter%20Amateur%20Radio%203.913%20MHz%2C%20LSB.mp3<\/a><\/audio>\n<p><strong>00:27 UTC, CHU Ottawa 3330 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-20\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h27m48s%20-%20CHU%20Ottawa%203.33%20MHz%2C%20SAM.mp3?_=20\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h27m48s%20-%20CHU%20Ottawa%203.33%20MHz%2C%20SAM.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h27m48s%20-%20CHU%20Ottawa%203.33%20MHz%2C%20SAM.mp3<\/a><\/audio>\n<p><strong>00:30 UTC, XEPPM Radio Educacion (Spanish Mexico City) 6185 kHz<\/strong><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-46931-21\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h30m19s%20-%20XEPPM%20REducacion%20Mexico%20City%206.185%20MHz%2C%20ECSS-U.mp3?_=21\" \/><a href=\"https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h30m19s%20-%20XEPPM%20REducacion%20Mexico%20City%206.185%20MHz%2C%20ECSS-U.mp3\">https:\/\/archive.org\/download\/loop-on-ground-audio-samples\/31-May-2020%2019h30m19s%20-%20XEPPM%20REducacion%20Mexico%20City%206.185%20MHz%2C%20ECSS-U.mp3<\/a><\/audio>\n<hr \/>\n<p><em><strong>This is brilliant Tom! Thank you for sharing.\u00a0<\/strong><\/em><\/p>\n<p><em><strong>Our antenna guru contributor, Grayhat, has been encouraging me (understatement!) to build a Loop-On-Ground antenna but I haven&#8217;t done this yet because, at home, our driveway would interfere with its deployment. That and I have no RFI to speak of in my rural\/remote home so my skyloop antenna is tough to beat. But having one available for portable use would make a lot of sense.\u00a0 I&#8217;m going to put this on my 2021 project list!<\/strong><\/em><\/p>\n<p><em><strong>Post Readers: Do you use a LoG antenna at home or in the field? Please comment!<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many thanks to SWLing Post contributor,\u00a0TomL, who shares the following guest post: My First Loop-On-Ground antenna A number of people have mentioned the Loop On Ground (LOG) antenna in the past as a good receive-only antenna.\u00a0 I did some research but could only find a few examples by amateur radio operators. Matt Roberts (KK5JY) has [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3607,3194,545,627,3,43,158],"tags":[8750,4342,4358,4359,9042,8074,4126,34,5119],"class_list":["post-46931","post","type-post","status-publish","format-standard","hentry","category-antennas","category-guest-posts","category-ham-radio","category-how-to","category-news","category-shortwave-radio","category-software-defined-radio","tag-field-radio","tag-guest-posts","tag-homebrew","tag-homebrew-mag-loop-antenna","tag-log-antenna","tag-loop-on-ground-antenna","tag-portable-radio","tag-shortwave","tag-toml"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-ccX","jetpack-related-posts":[{"id":47249,"url":"https:\/\/swling.com\/blog\/2021\/01\/loop-on-ground-antenna-part-2-tom-upgrades-his-low-profile-low-noise-portable-dxing-antenna\/","url_meta":{"origin":46931,"position":0},"title":"Loop-On-Ground Antenna Part 2: Tom upgrades his low profile, low noise, portable DXing antenna","author":"Thomas","date":"January 12, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor,\u00a0TomL, who shares the following guest post: Loop on Ground Part 2 by TomL My previous Loop on Ground (LoG) experiment was useful which entailed connecting my Wellbrook loop amplifier to a 100 foot loop of speaker wire in the field at my favorite local\u2026","rel":"","context":"In &quot;AM&quot;","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/LoGpart2Setup.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/LoGpart2Setup.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/LoGpart2Setup.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/LoGpart2Setup.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":31336,"url":"https:\/\/swling.com\/blog\/2018\/03\/backpack-shack-2-0-an-update-from-the-field\/","url_meta":{"origin":46931,"position":1},"title":"Backpack Shack 2.0: an update from the field","author":"Thomas","date":"March 25, 2018","format":false,"excerpt":"Many thanks to\u00a0SWLing Post contributor,\u00a0TomL, who shares the following update about his homebrew Backpack Shack 2.0 portable loop antenna: Quick Field update by TomL This is just a quick Field Update for my Backpack Shack 2.0 antenna. It is not the most powerful antenna but in the right location it\u2026","rel":"","context":"In &quot;Antennas&quot;","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/01\/8finalsetup-603x1024.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/01\/8finalsetup-603x1024.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/01\/8finalsetup-603x1024.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":55884,"url":"https:\/\/swling.com\/blog\/2023\/02\/loop-on-ground-antenna-part-3-toms-low-noise-low-profile-portable-antenna-evolves\/","url_meta":{"origin":46931,"position":2},"title":"Loop-On-Ground Antenna Part 3: Tom&#8217;s low-noise, low-profile, portable antenna evolves","author":"Thomas","date":"February 19, 2023","format":false,"excerpt":"Loop on Ground Antenna Part 3 (using multiconductor wire) by TomL It dawned on me recently, perhaps due to sloppy thinking or unintended distractions, that I never wrote about my modified Loop on Ground (LoG) receive antenna that I use at parks and such.\u00a0 For over a year now, I\u2026","rel":"","context":"In &quot;Antennas&quot;","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/02\/KBSQSL.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/02\/KBSQSL.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/02\/KBSQSL.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/02\/KBSQSL.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":47496,"url":"https:\/\/swling.com\/blog\/2021\/01\/build-an-affordable-but-stealthy-magnet-wire-vertical-loop-antenna-to-mitigate-condo-qrm\/","url_meta":{"origin":46931,"position":3},"title":"Build an affordable (but stealthy) Magnet Wire Vertical Loop antenna to mitigate condo QRM","author":"Thomas","date":"January 28, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor,\u00a0TomL, who shares the following guest post: Magnet Wire Vertical Loop Antenna by TomL For those of you in a noisy condo like me, the environment does not give me many options.\u00a0 I was experimenting with a YouLoop on the wooden porch with somewhat acceptable\u2026","rel":"","context":"In &quot;Antennas&quot;","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/MagnetWireVerticalLoop.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/MagnetWireVerticalLoop.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/MagnetWireVerticalLoop.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/MagnetWireVerticalLoop.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":50098,"url":"https:\/\/swling.com\/blog\/2021\/08\/wire-antennas-vs-mag-loop-antennas\/","url_meta":{"origin":46931,"position":4},"title":"Wire antennas vs. mag loop antennas","author":"Thomas","date":"August 29, 2021","format":false,"excerpt":"In the past few weeks, I've gotten a lot of questions from readers who are trying to decide if they should install a magnetic loop antenna or a simple wire antenna at their home. Obviously, most of the questions come from shortwave radio listeners, but some have come from ham\u2026","rel":"","context":"In &quot;Antennas&quot;","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/Elecraft-KX3.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/Elecraft-KX3.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/Elecraft-KX3.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":23043,"url":"https:\/\/swling.com\/blog\/2016\/12\/guest-post-backpack-shack-radio-listening\/","url_meta":{"origin":46931,"position":5},"title":"Guest Post: Backpack-Shack radio listening","author":"Thomas","date":"December 28, 2016","format":false,"excerpt":"Many thanks to\u00a0SWLing Post contributor TomL, who shares the following guest post: Backpack-Shack radio listening by TomL So, the Car Shack idea was good, but I felt constrained by lack of access to better locations to listen to shortwave radio. I took most of the original equipment and stuffed it\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/BPS1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/46931","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=46931"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/46931\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=46931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=46931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=46931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}