{"id":2430,"date":"2020-07-03T21:32:50","date_gmt":"2020-07-03T21:32:50","guid":{"rendered":"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/"},"modified":"2023-01-17T01:05:10","modified_gmt":"2023-01-17T01:05:10","slug":"73-amateur-radio-today-may-1973","status":"publish","type":"page","link":"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/","title":{"rendered":"73 Amateur Radio Today &#8211; May 1973"},"content":{"rendered":"\n<p class=\"has-text-align-center\"><span class=\"has-inline-color has-vivid-red-color\">73 Amateur Radio Today &#8211; May 1973<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Issue Contents:<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Mobile Burglar Alarm System<\/h3>\n\n\n\n<p>&#8211; Belt beeping burglar baffler &#8230;&#8230; WA4SAM 19<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The Burst Box<\/h3>\n\n\n\n<p>&#8211; A real tone-ic for the FMer &#8230;&#8230; WA7NMO 25<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Power Inverter w\/sine Wave Output<\/h3>\n\n\n\n<p>&#8211; For people with short extension cords &#8230;&#8230; W7OXD 29<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">450 MHz Preamp<\/h3>\n\n\n\n<p>&#8211; 10 dB gain on the receiver is a lot easier than on the transmitter &#8230;&#8230; WB6BIH 33<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Roof Mounted VHF Whips<\/h3>\n\n\n\n<p>&#8211; Phacts and phallacies &#8230;&#8230; WB6HYD 39<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LED Readout Crystal Switch<\/h3>\n\n\n\n<p>&#8211; Make everyone green with envy &#8230;&#8230; WA3AJR 47<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Voltage limit Sensor<\/h3>\n\n\n\n<p>&#8211; Car battery warning light &#8230;&#8230; W4UXJ 53<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Build a Digital Clock with 19 inexpensive ICs<\/h3>\n\n\n\n<p>&#8211; Is that round clock doomed? &#8230;&#8230; WA6QVQ 55<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Portable Use for the HR-2A<\/h3>\n\n\n\n<p>&#8211; Judi Repeater approves of this &#8230;&#8230; W2KPE 61<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fixed and Mobile 2m Antennas<\/h3>\n\n\n\n<p>&#8211; How to make your car look ridiculous &#8230;&#8230; WB8HEE 63<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Two Meter FM Transmitter<\/h3>\n\n\n\n<p>&#8211; Roll your own &#8230;&#8230; WB6BIH 65<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mini-repeater Control System Part II<\/h3>\n\n\n\n<p>&#8211; Have you read the book yet? &#8230;&#8230; WA0ZHT 71<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Audio Boost for Mobile Transceivers<\/h3>\n\n\n\n<p>&#8211; Mobile audio booster IC &#8230;&#8230; W2EEY 81<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6m 5W Amplifier<\/h3>\n\n\n\n<p>&#8211; For the kitchen table builder &#8230;&#8230; K1CLL 83<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hand Transceiver Madness<\/h3>\n\n\n\n<p>&#8211; Got yours yet? &#8230;&#8230; W2NSD\/1 89<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">QRP on 180 kHz<\/h3>\n\n\n\n<p>&#8211; Tried 1700m yet? &#8230;&#8230; W5SOT 93<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Solid State Automobile Burglar Alarm<\/h3>\n\n\n\n<p>&#8211; Blows horn or siren &#8230;&#8230; WA1KON 97<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Circuits Circuits Circuits<\/h3>\n\n\n\n<p>&#8211; Keep &#8217;em coming &#8230;&#8230; WR1AAB 105<\/p>\n\n\n<div id=\"wppdfemb-frame-container-19349\"><iframe id=\"wppdf-emb-iframe-19349\" scrolling=\"no\" data-pdf-index=\"2\" class=\"pdfembed-iframe nonfullscreen\" style=\"border: none; width:100%; max-width: 100%; min-height: 1000px;\" src=\"https:\/\/www.snapwhole.com?pdfID=19349&#038;url=%2F%3Fpdfemb-serveurl%3Dhttps%253A%252F%252Fwww.snapwhole.com%252Fwp-content%252Fuploads%252Fsecurepdfs%252Fdd50%252Fham1pdfs%252F73-05_May_1973.pdf%26pdfemb-nonce%3Dc9773e8e45&#038;index=2\" ><\/iframe><\/div>\n\n\n<p class=\"has-text-align-center\"><span class=\"has-inline-color has-vivid-red-color\">73 Amateur Radio Today &#8211; May 1973<\/span><\/p>\n\n\n\n<center><d3><a  style=\"color:Tomato;\" href=\"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-magazine\/\">Return to 73 Amateur Radio Today Index<\/a><\/d3><\/center><br><br>\n<div class=\"pvc_clear\"><\/div><p id=\"pvc_stats_2430\" class=\"pvc_stats all  \" data-element-id=\"2430\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/www.snapwhole.com\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p><div class=\"pvc_clear\"><\/div>","protected":false},"excerpt":{"rendered":"<p>73 Amateur Radio Today &#8211; May 1973 Issue Contents: Mobile Burglar Alarm System &#8211; Belt beeping burglar baffler &#8230;&#8230; WA4SAM 19 The Burst Box &#8211; A real tone-ic for the FMer &#8230;&#8230; WA7NMO 25 Power Inverter w\/sine Wave Output &#8211; For people with short extension cords &#8230;&#8230; W7OXD 29 450 MHz Preamp &#8211; 10 dB [&hellip;]<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_2430\" class=\"pvc_stats all  \" data-element-id=\"2430\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/www.snapwhole.com\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>73 Amateur Radio Today - May 1973 - SnapWhole.com<\/title>\n<meta name=\"description\" content=\"73 Amateur Radio Today - May 1973\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"73 Amateur Radio Today - May 1973 - SnapWhole.com\" \/>\n<meta property=\"og:description\" content=\"73 Amateur Radio Today - May 1973\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/\" \/>\n<meta property=\"og:site_name\" content=\"SnapWhole.com\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-17T01:05:10+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/\",\"url\":\"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/\",\"name\":\"73 Amateur Radio Today - May 1973 - SnapWhole.com\",\"isPartOf\":{\"@id\":\"https:\/\/www.snapwhole.com\/#website\"},\"datePublished\":\"2020-07-03T21:32:50+00:00\",\"dateModified\":\"2023-01-17T01:05:10+00:00\",\"description\":\"73 Amateur Radio Today - May 1973\",\"breadcrumb\":{\"@id\":\"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.snapwhole.com\/index.php\/73-amateur-radio-today-may-1973\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.snapwhole.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"73 Amateur Radio Today &#8211; 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