{"id":52,"date":"2023-01-23T17:30:38","date_gmt":"2023-01-23T16:30:38","guid":{"rendered":"http:\/\/sp5tof.vxm.pl\/?page_id=52"},"modified":"2026-01-05T09:57:39","modified_gmt":"2026-01-05T08:57:39","slug":"antenna-analyzer-1-8-30-mhz","status":"publish","type":"post","link":"https:\/\/sp5tof.pl\/?p=52","title":{"rendered":"Antenna analyzer 1.8 &#8211; 30 MHz"},"content":{"rendered":"\r\n<p>Cheap antenna analyzer is a tool strong demanded especially by Ham&#8217;s beginners. Few years ago I was browsing the net and found the Jim&#8217;s (KW4KD) movie on Youtube, where the very nice and simple builded antenna analyzer was presented:<\/p>\r\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/C6YxD72sX_Y\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\r\n<p>Design was based on Arduino board. I decided to create it for myself. My final version of the antenna analyzer is build based on ArduinoMini and the TFT Adafruit display. The core of hardware(analog part) remaines untouched. In comparison to Jim&#8217;s functionalities, I implemented also:<\/p>\r\n<ul>\r\n<li>TUNE mode (similar like VK5JST has)<\/li>\r\n<li>two hardware buttons to make interaction with a user (selecting mode, up\/down frequency in TUNE mode etc.)<\/li>\r\n<li>supply voltage meter<\/li>\r\n<li>rechargeable accumulators based on cellphone&#8217;s battery<\/li>\r\n<li>support for popular TFT 1.8&#8243; ST7735 display<\/li>\r\n<\/ul>\r\n<p><strong>My version in action:<\/strong><\/p>\r\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/Edbanqq8CNs\" width=\"560\" height=\"315\" frameborder=\"0\"><\/iframe><\/p>\r\n<p>I splitted my analyzer into two parts:<\/p>\r\n<ul>\r\n<li>DC part (power supply with recharging &#8216;controller&#8217;, Arduino controller \u00a0and TFT display connectors)<\/li>\r\n<li>HF part responsible for generating the frequencies and providing the voltages for SWR determining within DC part<\/li>\r\n<\/ul>\r\n<h4>PLEASE HAVE A LOOK AT THE SCHEMAS:<\/h4>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-66\" src=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_DC_part.png\" alt=\"\" width=\"1461\" height=\"821\" srcset=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_DC_part.png 1461w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_DC_part-300x169.png 300w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_DC_part-1024x575.png 1024w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_DC_part-768x432.png 768w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_DC_part-676x380.png 676w\" sizes=\"auto, (max-width: 1461px) 100vw, 1461px\" \/><\/p>\r\n<p style=\"text-align: center;\">Schema no.1 : DC Part -&gt; Power supply, charging system, Arduino control<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-67\" src=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_HF_part.png\" alt=\"\" width=\"1454\" height=\"683\" srcset=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_HF_part.png 1454w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_HF_part-300x141.png 300w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_HF_part-1024x481.png 1024w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_HF_part-768x361.png 768w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/schema_HF_part-809x380.png 809w\" sizes=\"auto, (max-width: 1454px) 100vw, 1454px\" \/><\/p>\r\n<p style=\"text-align: center;\">Schema no. 2 : HF Part<\/p>\r\n<p>HF part is taken from Jim&#8217;s project almost untouched. I added additional capacitor, according to Jim&#8217;s suggestion, placed very close to the supply of DDS to achive more accuracy with upper frequencies.\u00a0I used the PL-259 antenna connector instead of BNC .<\/p>\r\n<p>In case of DC part I equipped the Jim&#8217;s version with some additional features. I adopted the internal power comes from two rechargeable NOKIA batteries with internal electronic(BLC-2) prevents from being overloaded. This smart part was designed by Greg &#8211; SP8NTH :\u00a0<a href=\"http:\/\/www.sp2swj.sp-qrp.pl\/SP3SWJ\/VNA_MAX4_pliki\/LADOWANIE_AKU\/VNA%20MAX4%20-%20charger%20-%20%20option%20little%20tuned.pdf\" target=\"_blank\" rel=\"noopener\">Greg&#8217;s Website<\/a><\/p>\r\n<p>Please do not charging the accus with the supply above 12V. It should be exactly 12V. When the batteries are full, the D2 diode will go out.<\/p>\r\n<h4>Please find Arduino code, schemas &amp;PCB : <a href=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/antenna_analyzer-1.zip\">antenna_analyzer<\/a><\/h4>\r\n<h4>Harrie <strong>PE1JXI<\/strong> has provided improved PCB version of HF part.<br \/>You can download it here: <a href=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/HF_part_harrie.zip\">HF_part_harrie<\/a><\/h4>\r\n<h4>Harrie <strong>PE1JXI<\/strong> has provided ALSO SMD VERSION of HF part.<br \/>You can download it here: <a href=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/HF_part_SMD_version.zip\">HF_part_SMD_version<\/a><\/h4>\r\n<h4>I would like to thank people who support\u00a0me with this project:<\/h4>\r\n<ul>\r\n<li>of course Jim KW4KD for fast and full of proffessional answers on my e-mails<\/li>\r\n<li>Staszek SP6MLK for german diodes<\/li>\r\n<li>Cezary 161BD850 for VK5JST antenna analyzer (comparison purposes) &amp; accu charging idea<\/li>\r\n<\/ul>\r\n<p>&nbsp;<\/p>\r\n<p style=\"text-align: right;\"><strong><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-86\" src=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124551-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124551-300x225.jpg 300w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124551-1024x768.jpg 1024w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124551-768x576.jpg 768w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124551-507x380.jpg 507w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124551.jpg 1200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Jakub\/SP5TOF<\/strong><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-89\" src=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_101351-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_101351-300x225.jpg 300w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_101351-1024x768.jpg 1024w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_101351-768x576.jpg 768w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_101351-507x380.jpg 507w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_101351.jpg 1200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-85\" src=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160202_123711-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160202_123711-300x225.jpg 300w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160202_123711-1024x768.jpg 1024w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160202_123711-768x576.jpg 768w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160202_123711-507x380.jpg 507w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160202_123711.jpg 1200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-87\" src=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124554-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124554-300x225.jpg 300w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124554-1024x768.jpg 1024w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124554-768x576.jpg 768w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124554-507x380.jpg 507w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160208_124554.jpg 1200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-88\" src=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_090211-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_090211-300x225.jpg 300w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_090211-1024x768.jpg 1024w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_090211-768x576.jpg 768w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_090211-507x380.jpg 507w, https:\/\/sp5tof.pl\/wp-content\/uploads\/2023\/01\/20160311_090211.jpg 1200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>Cheap antenna analyzer is a tool strong demanded especially by Ham&#8217;s beginners. Few years ago I was browsing the net and found the Jim&#8217;s (KW4KD) movie on Youtube, where the&hellip; <\/p>\n","protected":false},"author":1,"featured_media":88,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-52","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-radio"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/sp5tof.pl\/index.php?rest_route=\/wp\/v2\/posts\/52","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sp5tof.pl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sp5tof.pl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sp5tof.pl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sp5tof.pl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=52"}],"version-history":[{"count":28,"href":"https:\/\/sp5tof.pl\/index.php?rest_route=\/wp\/v2\/posts\/52\/revisions"}],"predecessor-version":[{"id":90,"href":"https:\/\/sp5tof.pl\/index.php?rest_route=\/wp\/v2\/posts\/52\/revisions\/90"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sp5tof.pl\/index.php?rest_route=\/wp\/v2\/media\/88"}],"wp:attachment":[{"href":"https:\/\/sp5tof.pl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=52"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sp5tof.pl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=52"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sp5tof.pl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=52"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}