{"id":921,"date":"2020-05-16T19:26:32","date_gmt":"2020-05-17T00:26:32","guid":{"rendered":"http:\/\/www.k2ie.net\/blog\/?p=921"},"modified":"2020-05-16T21:11:21","modified_gmt":"2020-05-17T02:11:21","slug":"hotspot-frequency-guidance","status":"publish","type":"post","link":"https:\/\/www.k2ie.net\/blog\/2020\/05\/16\/hotspot-frequency-guidance\/","title":{"rendered":"Hotspot Frequency Guidance"},"content":{"rendered":"\n<p>I recently spoke with a fellow who was trying to use his hotspot on a frequency around 438 MHz.  He wasn&#8217;t having much luck and with good reason.  The MMDVM firmware blocks usage on all frequencies between 435 and 438 MHz.  The block was implemented because 435-438 MHz is a suband used by the amateur satellite service and some amateurs noticed an increase of terrestrial interference with satellite communications.<\/p>\n\n\n\n<p>Another ham that I spoke to is using a hotspot frequency that is also the input of several coordinated repeaters in my area.  This is also not a good idea as it can also create interference, especially when operating a hotspot while mobile.<\/p>\n\n\n\n<p>Here is my list of recommended simplex hotspot frequencies that is not likely to cause interference to other operators, repeaters, or satellites:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>145.51 MHz<\/td><\/tr><tr><td>441.000 MHz<\/td><\/tr><tr><td>446.500 MHz<\/td><\/tr><tr><td>446.075 MHz<\/td><\/tr><tr><td>433.45 MHz<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Most hams seem to set the admit criteria on their radios to Always for use with simplex hotspots.  I strongly recommend that you use Channel Free instead to reduce the possibility of doubling.<\/p>\n\n\n\n<p>73 de K2IE<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I recently spoke with a fellow who was trying to use his hotspot on a frequency around 438 MHz. He wasn&#8217;t having much luck and with good reason. The MMDVM firmware blocks usage on all frequencies between 435 and 438 MHz. The block was implemented because 435-438 MHz is a suband used by the amateur &hellip; <a href=\"https:\/\/www.k2ie.net\/blog\/2020\/05\/16\/hotspot-frequency-guidance\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Hotspot Frequency Guidance&#8221;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[200,199,156,122],"class_list":["post-921","post","type-post","status-publish","format-standard","hentry","category-radio","tag-frequency","tag-hotspot","tag-mmdvm","tag-pi-star"],"_links":{"self":[{"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/posts\/921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/comments?post=921"}],"version-history":[{"count":4,"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/posts\/921\/revisions"}],"predecessor-version":[{"id":925,"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/posts\/921\/revisions\/925"}],"wp:attachment":[{"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/media?parent=921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/categories?post=921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.k2ie.net\/blog\/wp-json\/wp\/v2\/tags?post=921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}