1.0SADARS: Shefford and District Amateur Radio Societyhttps://sadars.co.uk/wprich600338<blockquote class="wp-embedded-content" data-secret="0nq36XzEbI"><a href="https://sadars.co.uk/wp/archives/1142">4 Feb 2016 – Utility Listening by Don, G4LOO</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://sadars.co.uk/wp/archives/1142/embed#?secret=0nq36XzEbI" width="600" height="338" title="“4 Feb 2016 – Utility Listening by Don, G4LOO” — SADARS: Shefford and District Amateur Radio Society" data-secret="0nq36XzEbI" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !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); //# sourceURL=https://sadars.co.uk/wp/wp-includes/js/wp-embed.min.js </script> Don’s first talk about Utility Listening was back in 1990 when he described the Hoka Code 3 Data Mode Decoder. At that time there were many different modes which are, for the most part, no longer used. Since that time, many of those who made the transmissions have changed to satellite communications. However, now it … Continue reading →http://sadars.co.uk/wp/wp-content/uploads/2016/02/ELAD-FDM-S-2-.jpg