{"id":210,"date":"2025-07-31T09:00:47","date_gmt":"2025-07-31T17:00:47","guid":{"rendered":"https:\/\/salemdata.net\/johnpress\/?p=210"},"modified":"2025-07-31T09:00:47","modified_gmt":"2025-07-31T17:00:47","slug":"released-iq_guard","status":"publish","type":"post","link":"https:\/\/salemdata.net\/johnpress\/?p=210","title":{"rendered":"Released iq_guard"},"content":{"rendered":"
\n<p class="wp-block-paragraph">I built a tool to help me monitor the various transmissions of a local radio channel. What happens is aircraft at different distances can cause “blow out” on my transceiver, so I wanted a tool that will let me monitor the variety of transmissions there are so I can gauge gain values when I tune a receiver and\/or know what the power gamut is.<br>Here’s an example of my monitoring signals in a console that follows a log where entries are added every 250 milliseconds:<\/p>\n\n\n\n<figure class="wp-block-image size-full is-resized wp-duotone-unset-1"><img src="https:\/\/salemdata.net\/johnpress\/wp-content\/uploads\/2025\/07\/20250730_151641_Wed.png" alt="" class="wp-image-211" style="width:287px;height:auto"\/><\/figure>\n\n\n\n<p class="wp-block-paragraph">White is the lowest power indicating no transmission activity, and red is the highest power — indicating someone is transmitting, e.g. speaking. The yellow and green represent weak signals from aircraft that are too far away from my antenna, there’s enough of a signal to indicate activity, but the signal is so weak, I probably could not demodulate it into anything that could be understood.<\/p>\n\n\n\n<p class="wp-block-paragraph">The project is iq_guard at <a href="https:\/\/github.com\/jlpoolen\/iq_sentry">https:\/\/github.com\/jlpoolen\/iq_sentry<\/a>. It is built in Rust and people who want to use the tool would need to compile their own binary.<\/p>\n<\/div>
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I built a tool to help me monitor the various transmissions of a local radio channel. What happens is aircraft at different distances can cause “blow out” on my transceiver, so I wanted a tool that will let me monitor the variety of transmissions there are so I can gauge gain values when I tune a receiver and\/or know what the power gamut is.
Here’s an example of my monitoring signals in a console that follows a log where entries are added every 250 milliseconds:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

White is the lowest power indicating no transmission activity, and red is the highest power — indicating someone is transmitting, e.g. speaking. The yellow and green represent weak signals from aircraft that are too far away from my antenna, there’s enough of a signal to indicate activity, but the signal is so weak, I probably could not demodulate it into anything that could be understood.<\/p>\n\n\n\n

The project is iq_guard at https:\/\/github.com\/jlpoolen\/iq_sentry<\/a>. It is built in Rust and people who want to use the tool would need to compile their own binary.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

<p class="wp-block-paragraph">I built a tool to help me monitor the various transmissions of a local radio channel. What happens is aircraft at different distances can cause “blow out” on my transceiver, so I wanted a tool that will let me monitor the variety of transmissions there are so I can gauge gain values when I […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gfmr_meta_descriptions":[],"_gfmr_multilingual_taxonomy_terms":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-210","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=\/wp\/v2\/posts\/210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=210"}],"version-history":[{"count":1,"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=\/wp\/v2\/posts\/210\/revisions"}],"predecessor-version":[{"id":212,"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=\/wp\/v2\/posts\/210\/revisions\/212"}],"wp:attachment":[{"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/salemdata.net\/johnpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}