{"id":2406,"date":"2026-06-17T10:06:01","date_gmt":"2026-06-17T10:06:01","guid":{"rendered":"https:\/\/tacticalcomms2601.com\/?p=2406"},"modified":"2026-06-17T10:13:55","modified_gmt":"2026-06-17T10:13:55","slug":"i-dont-believe-you-prove-it","status":"publish","type":"post","link":"https:\/\/tacticalcomms2601.com\/vi\/i-dont-believe-you-prove-it\/","title":{"rendered":"\u201cI don\u2019t believe you\u2026..prove it\u201d"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2406\" class=\"elementor elementor-2406\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a9a400b thegem-e-con-layout-thegem e-flex e-con-boxed e-con e-parent\" data-id=\"a9a400b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;thegem_container_layout&quot;:&quot;thegem&quot;}\">\r\n\t\t\t\t\t<div class=\"e-con-inner\">\r\n\t\t\t\t<div class=\"elementor-element elementor-element-51c9f84 flex-horizontal-align-default flex-horizontal-align-tablet-default flex-horizontal-align-mobile-default flex-vertical-align-default flex-vertical-align-tablet-default flex-vertical-align-mobile-default elementor-widget elementor-widget-thegem-animated-heading\" data-id=\"51c9f84\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"thegem-animated-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"thegem-heading thegem-animated-heading title-h3\" id=\"thegem-heading-51c9f84\"><span class=\"elementor-repeater-item-f459498\">Words spoken by the Commander of a Disaster Management Agency in northern Europe, when he questioned our ability to deliver audio and data connectivity, and human tracking, from a disused underground train station, 5 levels below ground (at a depth of 25 metres).<br \/>\n<br \/>\nWe accepted the challenge\u2026..and here are the results!<\/span> <\/div><style type=\"text\/css\">#thegem-heading-51c9f84 {margin: 0;}#thegem-heading-51c9f84 {margin-left: auto; margin-right: auto;}#thegem-heading-51c9f84 > * {justify-content: center;}<\/style>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d605cd1 flex-horizontal-align-default flex-horizontal-align-tablet-default flex-horizontal-align-mobile-default flex-vertical-align-default flex-vertical-align-tablet-default flex-vertical-align-mobile-default elementor-widget elementor-widget-text-editor\" data-id=\"d605cd1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\r\n\t\t\t\t\t\t<p>Mesh technology is ideal for disaster management agencies as they \u201cbring their own network\u201d to locations where communications infrastructure typically is unavailable. This could be to the site of an earthquake, or an underground train collision, or a road tunnel accident, or a terrorism incident where the authorities have shut down the cellular network.<\/p><p>In this instance, the exercise was to simulate a disaster in a train tunnel, half-way between two train stations, at a distance of 300 metres along the train tunnel, with the platform located 25 metres below ground. The five different levels involved many right-angle turns to descend stairs. This site is a regular training location for underground rescue and the agency\u2019s DMR radios cease to function before the user reaches the train platform at the fifth level.<\/p><p><img fetchpriority=\"high\" class=\"alignright wp-image-2416 size-full\" src=\"https:\/\/tacticalcomms2601.com\/wp-content\/uploads\/2026\/06\/tunnel-11.jpg\" alt=\"\" width=\"565\" height=\"750\" srcset=\"https:\/\/tacticalcomms2601.com\/wp-content\/uploads\/2026\/06\/tunnel-11.jpg 565w, https:\/\/tacticalcomms2601.com\/wp-content\/uploads\/2026\/06\/tunnel-11-226x300.jpg 226w, https:\/\/tacticalcomms2601.com\/wp-content\/uploads\/2026\/06\/tunnel-11-9x12.jpg 9w\" sizes=\"(max-width: 565px) 100vw, 565px\" \/>The challenge was to deliver audio and data (tracking PLI data) to the Command Post on the surface, outside the entrance to the station. In addition, they wanted to backhaul the network to their HQ via unified communications system. When we asked if they would like to also stream live video from the incident, they just laughed at the idea, believing it impossible in their experience.<\/p><p>There were six domestic agencies in attendance and two agencies from neighbouring countries, a mixture of Search &amp; Rescue, Counter Terrorism, Civil Defence, Military and Law Enforcement, as well as the operator of the train network.<\/p><p>We established a Command Post inside a temporary tent structure with our Unified Communications vehicle close by. Two GUIs were set up, one to display the Mesh network status, video stream, and GPS (for the Mesh radios on the surface) and a second to display the real-time live tracking data (over three axes X\/Y\/Z). This utilised four of our Mesh radios. A further three of our small, hand-held, battery operated PTT Mesh radios were dropped on the way down the stairs as we witnessed low SNRs on our network status app running on our mobile devices. The RF output power of these radios is a single 500mW transmitter, with dual diversity receiver, and zero DB gain antennae.<\/p><p>All of our body-worn\/hand-held Mesh radios have integral Wi-Fi access allowing ease of connectivity for apps running on user\u2019s mobile devices. The ease of determining network status on the move, and the easy placement of radios as relays \u201con the move\u201d was perceived a major benefit to operations.<\/p>\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-11b79ef e-con e-atomic-element e-flexbox-base e-092b34a\" data-id=\"11b79ef\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"11b79ef\">\n    <div class=\"elementor-element elementor-element-e4ee1d6 e-con e-atomic-element e-flexbox-base e-054368f\" data-id=\"e4ee1d6\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"e4ee1d6\">\n    \t\t<div class=\"elementor-element elementor-element-48bca60 flex-horizontal-align-default flex-horizontal-align-tablet-default flex-horizontal-align-mobile-default flex-vertical-align-default flex-vertical-align-tablet-default flex-vertical-align-mobile-default elementor-widget elementor-widget-text-editor\" data-id=\"48bca60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\r\n\t\t\t\t\t\t<center><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Hyy47Jeep-0?si=VrVjeMxdp2XDTQZm\" width=\"700\" height=\"406\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/center>\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-1031d1e e-con e-atomic-element e-flexbox-base e-da9a47a\" data-id=\"1031d1e\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"1031d1e\">\n    \t\t<div class=\"elementor-element elementor-element-81a5dcf flex-horizontal-align-default flex-horizontal-align-tablet-default flex-horizontal-align-mobile-default flex-vertical-align-default flex-vertical-align-tablet-default flex-vertical-align-mobile-default elementor-widget elementor-widget-text-editor\" data-id=\"81a5dcf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\r\n\t\t\t\t\t\t<video style=\"max-width: 100%; height: auto;\" preload=\"metadata\" controls=\"controls\" width=\"450\" height=\"225\">\n<source src=\"https:\/\/sovsys.co\/wp-content\/uploads\/2025\/12\/Both-screens.mp4\" type=\"video\/mp4\" \/>\nYour browser does not support the video tag.\n<\/video>\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\n<\/div>\n<div class=\"elementor-element elementor-element-1770534 e-con e-atomic-element e-flexbox-base e-dfa0553\" data-id=\"1770534\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"1770534\">\n    <div class=\"elementor-element elementor-element-e3e4103 e-con-full thegem-e-con-layout-thegem e-flex e-con e-child\" data-id=\"e3e4103\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;thegem_container_layout&quot;:&quot;thegem&quot;}\">\r\n\t\t\t\t<div class=\"elementor-element elementor-element-08faa7b flex-horizontal-align-default flex-horizontal-align-tablet-default flex-horizontal-align-mobile-default flex-vertical-align-default flex-vertical-align-tablet-default flex-vertical-align-mobile-default elementor-widget elementor-widget-thegem-animated-heading\" data-id=\"08faa7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"thegem-animated-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"thegem-heading thegem-animated-heading title-h6\" id=\"thegem-heading-08faa7b\"><span class=\"colored elementor-repeater-item-a6196b7\" style=\"color: #FFDA0F;\">lorem ipsum dolor<\/span> <\/div><style type=\"text\/css\">#thegem-heading-08faa7b {margin: 0;}<\/style>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bbaf104 elementor-widget__width-initial flex-horizontal-align-default flex-horizontal-align-tablet-default flex-horizontal-align-mobile-default flex-vertical-align-default flex-vertical-align-tablet-default flex-vertical-align-mobile-default elementor-widget elementor-widget-thegem-animated-heading\" data-id=\"bbaf104\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"thegem-animated-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"thegem-heading thegem-animated-heading title-h3\" id=\"thegem-heading-bbaf104\"><span class=\"elementor-repeater-item-15d9029\">Neque porro quisquam est qui dolorem ipsum quia dolor sit amet consectetur adipisci!<\/span> <\/div><style type=\"text\/css\">#thegem-heading-bbaf104 {margin: 0;}<\/style>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Words spoken by the Commander of a Disaster Management Agency in northern Europe, when he questioned our ability to deliver&#8230;<\/p>","protected":false},"author":3,"featured_media":2416,"comment_status":"open","ping_status":"open","sticky":false,"template":"single-fullwidth.php","format":"standard","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[2],"tags":[],"class_list":["post-2406","post","type-post","status-publish","format-standard","has-post-thumbnail","category-maintenance"],"menu_order":0,"_links":{"self":[{"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/posts\/2406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/comments?post=2406"}],"version-history":[{"count":7,"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/posts\/2406\/revisions"}],"predecessor-version":[{"id":2419,"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/posts\/2406\/revisions\/2419"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/media\/2416"}],"wp:attachment":[{"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/media?parent=2406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/categories?post=2406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tacticalcomms2601.com\/vi\/wp-json\/wp\/v2\/tags?post=2406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}