{"id":464,"date":"2011-10-24T20:54:09","date_gmt":"2011-10-24T19:54:09","guid":{"rendered":"http:\/\/lefars.org.uk\/WPblog\/?p=464"},"modified":"2011-10-30T00:47:12","modified_gmt":"2011-10-29T23:47:12","slug":"frequency-counter-with-a-pic-and-minimum-hardware","status":"publish","type":"post","link":"https:\/\/lefars.org.uk\/WPblog\/frequency-counter-with-a-pic-and-minimum-hardware\/","title":{"rendered":"Frequency Counter with a PIC and Minimum Hardware"},"content":{"rendered":"<p>Had a couple of hours spare and decided to chuck this frequency counter together. <em>[Pictures below]<\/em>.\u00a0I got it off an amateur based in India, <strong>Sunil Lakhani VU3SUA<\/strong>,\u00a0on eBay. Sunil did also sell the BITX20 transceiver kits as well.\u00a0Unfortunately he is no longer a registered user of eBay.<\/p>\n<p>However, it now looks like Sunil VU3SUA is selling over the net. I found his website after searching for\u00a0<a><em>BITX20<\/em>. The link for the frequency counter kit (sold as a digital dial) is <\/a><a href=\"http:\/\/cqbitx.blogspot.com\/p\/buy-digital-dail-build-11.html\">here<\/a><a>. The max frequency input is 40MHz.<\/a>. It uses a pre-programmed PIC16F628A and the frequency counter module will be added to the BITX20, when I finally get round to building it \ud83d\ude42<\/p>\n<p>73<\/p>\n<p>Derek M0XDC. \u00a0Email <a href=\"mailto:m0xdc@lefars.org.uk\">m0xdc@lefars.org.uk<\/a><\/p>\n<p><strong>Links:<\/strong><br \/>\nCQBITX main site \u00a0<a href=\"http:\/\/cqbitx.blogspot.com\/ \">http:\/\/cqbitx.blogspot.com\/<\/a><br \/>\nFurther reading, original design notes <a href=\"http:\/\/www.iw1axr.eu\/radio\/BiTx\/Frequenzimetro%20a%20led%20con%2016F628.pdf\">here<\/a><br \/>\nPIC16F628A <a href=\"http:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/40044G.pdf\">datasheet<\/a><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_002.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"465\" data-permalink=\"https:\/\/lefars.org.uk\/WPblog\/frequency-counter-with-a-pic-and-minimum-hardware\/m0dxc_freq_counter_002\/\" data-orig-file=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_002.jpg\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"M0DXC_Freq_counter_002\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_002.jpg\" class=\"aligncenter size-full wp-image-465\" title=\"M0DXC_Freq_counter_002\" src=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_002.jpg\" alt=\"\" width=\"800\" height=\"600\" srcset=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_002.jpg 800w, https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_002-300x225.jpg 300w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><br \/>\n<a href=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_004.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"466\" data-permalink=\"https:\/\/lefars.org.uk\/WPblog\/frequency-counter-with-a-pic-and-minimum-hardware\/m0dxc_freq_counter_004\/\" data-orig-file=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_004.jpg\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"M0DXC_Freq_counter_004\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_004.jpg\" class=\"aligncenter size-full wp-image-466\" title=\"M0DXC_Freq_counter_004\" src=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_004.jpg\" alt=\"\" width=\"800\" height=\"600\" srcset=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_004.jpg 800w, https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_004-300x225.jpg 300w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><br \/>\n<a href=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_005.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"467\" data-permalink=\"https:\/\/lefars.org.uk\/WPblog\/frequency-counter-with-a-pic-and-minimum-hardware\/m0dxc_freq_counter_005\/\" data-orig-file=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_005.jpg\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"M0DXC_Freq_counter_005\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_005.jpg\" class=\"aligncenter size-full wp-image-467\" title=\"M0DXC_Freq_counter_005\" src=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_005.jpg\" alt=\"\" width=\"800\" height=\"600\" srcset=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_005.jpg 800w, https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_005-300x225.jpg 300w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><br \/>\n<a href=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_006.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"468\" data-permalink=\"https:\/\/lefars.org.uk\/WPblog\/frequency-counter-with-a-pic-and-minimum-hardware\/m0dxc_freq_counter_006\/\" data-orig-file=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_006.jpg\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"M0DXC_Freq_counter_006\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_006.jpg\" class=\"aligncenter size-full wp-image-468\" title=\"M0DXC_Freq_counter_006\" src=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_006.jpg\" alt=\"\" width=\"800\" height=\"600\" srcset=\"https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_006.jpg 800w, https:\/\/lefars.org.uk\/WPblog\/wp-content\/uploads\/2011\/10\/M0DXC_Freq_counter_006-300x225.jpg 300w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Had a couple of hours spare and decided to chuck this frequency counter together. [Pictures below].\u00a0I got it off an amateur based in India, Sunil Lakhani VU3SUA,\u00a0on eBay. Sunil did also sell the BITX20 transceiver kits as well.\u00a0Unfortunately he is &hellip; <a href=\"https:\/\/lefars.org.uk\/WPblog\/frequency-counter-with-a-pic-and-minimum-hardware\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"gallery","meta":{"_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":""},"categories":[10],"tags":[39,38],"class_list":["post-464","post","type-post","status-publish","format-gallery","hentry","category-home-construction","tag-cqbitx","tag-sunil-vu3sua","post_format-post-format-gallery"],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p22sia-7u","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/posts\/464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/comments?post=464"}],"version-history":[{"count":21,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/posts\/464\/revisions"}],"predecessor-version":[{"id":530,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/posts\/464\/revisions\/530"}],"wp:attachment":[{"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/media?parent=464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/categories?post=464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lefars.org.uk\/WPblog\/wp-json\/wp\/v2\/tags?post=464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}