{"version":"1.0","provider_name":"MyAntennas.com","provider_url":"https:\/\/myantennas.com\/wp","author_name":"Danny-E73M","author_url":"https:\/\/myantennas.com\/wp\/author\/danny\/","title":"All About EFHW Antennas","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"XU3mfvDhxT\"><a href=\"https:\/\/myantennas.com\/wp\/tech-info\/all-about-efhw-antennas\/\">All About EFHW Antennas<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/myantennas.com\/wp\/tech-info\/all-about-efhw-antennas\/embed\/#?secret=XU3mfvDhxT\" width=\"600\" height=\"338\" title=\"&#8220;All About EFHW Antennas&#8221; &#8212; MyAntennas.com\" data-secret=\"XU3mfvDhxT\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/myantennas.com\/wp\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"By Danny Horvat, E73M \/ N4EXA \u2014 antenna design engineer and founder of MyAntennas.com. Since 2015, we have shipped tens of thousands of EFHW antennas and transformers to hams in over 130 countries, and along the way, I have answered the same questions thousands of times: Does it need a counterpoise? How high? Why is [&hellip;]","thumbnail_url":"https:\/\/myantennas.com\/wp\/wp-content\/uploads\/2018\/01\/EndFedCurrentDistribution.jpg"}