{"version":"1.0","provider_name":"I8ZSE","provider_url":"https:\/\/www.i8zse.it\/en","author_name":"giorgio@i8zse.eu","author_url":"https:\/\/www.i8zse.it\/en\/author\/giorgioi8zse-eu\/","title":"PSK - I8ZSE","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"6sZxw0P43D\"><a href=\"https:\/\/www.i8zse.it\/en\/modulation\/804-2\/\">PSK<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.i8zse.it\/en\/modulation\/804-2\/embed\/#?secret=6sZxw0P43D\" width=\"600\" height=\"338\" title=\"&#8220;PSK&#8221; &#8212; I8ZSE\" data-secret=\"6sZxw0P43D\" 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:\/\/www.i8zse.it\/en\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.i8zse.it\/en\/wp-content\/uploads\/2026\/06\/psk.png","thumbnail_width":1600,"thumbnail_height":1160,"description":"PSK (Phase Shift Keying) modulation is one of the most refined and efficient techniques used in digital radio communications, and it has found in amateur radio an ideal field of application. The basic principle is simple but powerful: information is not transmitted by varying amplitude or frequency, but by modifying the phase of the carrier. [&hellip;]"}