{"id":2087,"date":"2018-07-11T10:51:33","date_gmt":"2018-07-11T10:51:33","guid":{"rendered":"http:\/\/network-radios.com\/?p=2087"},"modified":"2018-07-11T10:54:02","modified_gmt":"2018-07-11T10:54:02","slug":"improvement-adjustment-of-the-standard-microphone-of-the-inrico-tm-7","status":"publish","type":"post","link":"https:\/\/network-radios.com\/index.php\/2018\/07\/11\/improvement-adjustment-of-the-standard-microphone-of-the-inrico-tm-7\/","title":{"rendered":"Improvement \/ adjustment of the standard microphone of the Inrico TM-7"},"content":{"rendered":"<p>From various stations I was told that the modulation of my <a href=\"http:\/\/network-radios.com\/index.php\/product\/inrico-tm-7-3gwifi-mobile-network-radio\/\">TM-7<\/a> was rather shrill.<br \/>\nOn this I decided to replace the standard microphone (internal) with an electret microphone.<br \/>\nIn order not to burden the <a href=\"http:\/\/network-radios.com\/index.php\/product\/inrico-tm-7-3gwifi-mobile-network-radio\/\">TM-7<\/a> extra, I decided not to extract the required voltage from the device (via the microphone connector) but to use an external power supply for the electret microphone.<br \/>\nThis requires:<\/p>\n<p>1 &#8211; Three wire <a href=\"https:\/\/amzn.to\/2Jeq2Kx\" target=\"_blank\" rel=\"noopener\">electret microphone<\/a> (with separated + wire)<br \/>\n<a href=\"https:\/\/amzn.to\/2Jeq2Kx\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2088\" src=\"http:\/\/network-radios.com\/wp-content\/uploads\/2018\/07\/1.png\" alt=\"\" width=\"341\" height=\"324\" \/><\/a><\/p>\n<p>1 &#8211; <a href=\"https:\/\/amzn.to\/2maw9Xm\" target=\"_blank\" rel=\"noopener\">Button cell battery<\/a><\/p>\n<p><a href=\"https:\/\/amzn.to\/2maw9Xm\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2089\" src=\"http:\/\/network-radios.com\/wp-content\/uploads\/2018\/07\/2.png\" alt=\"\" width=\"308\" height=\"244\" \/><\/a><\/p>\n<p>1 &#8211; <a href=\"https:\/\/amzn.to\/2NECerg\" target=\"_blank\" rel=\"noopener\">Button cell holder<\/a><\/p>\n<p><a href=\"https:\/\/amzn.to\/2NECerg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2090\" src=\"http:\/\/network-radios.com\/wp-content\/uploads\/2018\/07\/3.png\" alt=\"\" width=\"265\" height=\"199\" \/><\/a><\/p>\n<p>I have connected the new microphone according to the diagram below.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2091 size-full\" src=\"http:\/\/network-radios.com\/wp-content\/uploads\/2018\/07\/4.png\" alt=\"\" width=\"905\" height=\"532\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2092 size-full\" src=\"http:\/\/network-radios.com\/wp-content\/uploads\/2018\/07\/5.png\" alt=\"\" width=\"860\" height=\"630\" \/><\/p>\n<p>After a number of QSO&#8217;s tests, the adjustment proves to be a huge improvement on the standard situation. The modulation is said to be nice and full and not that sharp anymore.<\/p>\n<p>by Marcel Goedemans<\/p>\n","protected":false},"excerpt":{"rendered":"<p>From various stations I was told that the modulation of my TM-7 was rather shrill. On this I decided to replace the standard microphone (internal) with an electret microphone. In order not to burden the TM-7 extra, I decided not to extract the required voltage from the device (via the microphone connector) but to use [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,23],"tags":[],"class_list":["post-2087","post","type-post","status-publish","format-standard","hentry","category-amateur-radio","category-zello-operation"],"_links":{"self":[{"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/posts\/2087","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/comments?post=2087"}],"version-history":[{"count":3,"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/posts\/2087\/revisions"}],"predecessor-version":[{"id":2095,"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/posts\/2087\/revisions\/2095"}],"wp:attachment":[{"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/media?parent=2087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/categories?post=2087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/network-radios.com\/index.php\/wp-json\/wp\/v2\/tags?post=2087"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}