{"id":474,"date":"2018-04-04T20:08:39","date_gmt":"2018-04-05T03:08:39","guid":{"rendered":"https:\/\/ad6dm.net\/log\/?p=474"},"modified":"2018-04-04T20:34:16","modified_gmt":"2018-04-05T03:34:16","slug":"sent-first-sstv-image","status":"publish","type":"post","link":"https:\/\/ad6dm.net\/log\/2018\/04\/sent-first-sstv-image\/","title":{"rendered":"Sent first SSTV image"},"content":{"rendered":"

Using\u00a0SSTV for iOS<\/a>\u00a0on my phone and a\u00a0BTECH APRS-K1 Audio Interface Cable<\/a>\u00a0(albeit connected to a Kenwood TH-D74A), I just sent my first SSTV image on 145.510 MHz FM simplex. I don’t think anyone heard, but it was a proof of concept exercise.<\/p>\n

I recorded the transmission on a separate handheld, using a small voice recorder. Despite this lossy recording method, I was able to reconstruct the image pretty well using the same SSTV app.<\/p>\n

Here is the recording, give it a try with your decoder:<\/p>\nhttps:\/\/ad6dm.net\/log\/wp-content\/uploads\/2018\/04\/802_0061.mp3<\/a><\/audio>\n

Encoded with Scottie 1, try decoding this SSTV transmission with your own SSTV app. (here’s a media file\u00a0download link<\/a>)<\/p>\n

The implications of this mode are fascinating. I can imagine being in the field and needing to send a photo in a grid-down\/remote situation. With just your phone (which is a camera), a cable, and a handheld, you can easily send out images of the scene. It’s basically color fax for hams! Moreover, it’s a quick method for exchanging digital QSL cards. \ud83d\ude42<\/p>\n

This topic was covered in an EMCOMM class I took, but I did not realize the practicality of this. I thought it was “yet another digital mode” that required carrying around luxuries like a laptop computer, TNC, laptop power, and fancy antennas. The iPhone + handheld method brought this down to earth for me, and helped me realize it’s a very portable way of communicating.<\/p>\n

Here’s a list of SSTV frequencies I found:\u00a0http:\/\/www.qsl.net\/kb4yz\/net.txt<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Using\u00a0SSTV for iOS\u00a0on my phone and a\u00a0BTECH APRS-K1 Audio Interface Cable\u00a0(albeit connected to a Kenwood TH-D74A), I just sent my first SSTV image on 145.510 MHz FM simplex. I don’t think anyone heard, but it was a proof of concept exercise. I recorded the transmission on a separate handheld, using a small voice recorder. Despite this lossy recording method, I was able to reconstruct the image pretty well using the same SSTV app. Here is the recording, give it a try with your decoder: Encoded with Scottie 1, try decoding this SSTV transmission with your own SSTV app. (here’s a media file\u00a0download link) The implications of this mode are fascinating.… Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5,10],"tags":[15,30,40,28],"class_list":["post-474","post","type-post","status-publish","format-standard","hentry","category-digital","category-emcomm","tag-digital","tag-emcomm","tag-sstv","tag-vhf"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9naFX-7E","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":74,"url":"https:\/\/ad6dm.net\/log\/2017\/10\/great-california-shake-out-earthquake-drill\/","url_meta":{"origin":474,"position":0},"title":"Great California Shake-Out Earthquake Drill!","author":"kf6ujs","date":"October 19, 2017","format":false,"excerpt":"It was a quick checkin on the W6SF repeater from Folsom, CA today. In participation with\u00a0The 2017 International ShakeOut Day, today Oct. 19, 2017 at 10:19am, we had a QST to check in to the drill. Most checkins had \"no damage\" but there could have been mock damage appended with\u2026","rel":"","context":"In "EMCOMM"","block_context":{"text":"EMCOMM","link":"https:\/\/ad6dm.net\/log\/category\/emcomm\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":346,"url":"https:\/\/ad6dm.net\/log\/2018\/01\/arrl-ec-001-emergency-communications-course\/","url_meta":{"origin":474,"position":1},"title":"ARRL EC-001 Emergency Communications Course","author":"AD6DM","date":"January 21, 2018","format":false,"excerpt":"Today marks the day I took the final for ARRL's EC-001: Emergency Communications Basic\/Level 1 course. It's a 9 week course that I started in November and covers a wide range of EMCOMM topics: From the organizational structure of emergency communicator groups to traffic net etiquette to digital modes to\u2026","rel":"","context":"In "Elmer"","block_context":{"text":"Elmer","link":"https:\/\/ad6dm.net\/log\/category\/elmer\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/ad6dm.net\/log\/wp-content\/uploads\/2018\/01\/EC-001_Cert.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1187,"url":"https:\/\/ad6dm.net\/log\/2021\/09\/amateur-radio-texting-using-aprs\/","url_meta":{"origin":474,"position":2},"title":"Amateur Radio Texting Using APRS","author":"AD6DM","date":"September 19, 2021","format":false,"excerpt":"Experienced hams have been talking about using APRS messages for SMS texting to friends and family for a few years now. 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But it's just fascinating to me to refine the build and power management process of readily available LiFePO4 cells. There are so many kinds! And they keep improving. I guess I have China to thank for that, so much\u2026","rel":"","context":"In "Build"","block_context":{"text":"Build","link":"https:\/\/ad6dm.net\/log\/category\/build\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1014,"url":"https:\/\/ad6dm.net\/log\/2020\/08\/podcast-is-live\/","url_meta":{"origin":474,"position":4},"title":"Podcast is Live","author":"AD6DM","date":"August 14, 2020","format":false,"excerpt":"I had a weird journey toward making a podcast. I never really thought about doing one, after all, what would I talk about? I had a hard enough time making videos I was genuinely interested in. 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I was so looking forward to CQ'ing on my available bands with CW in an automated sense, but\u2026","rel":"","context":"In "CW"","block_context":{"text":"CW","link":"https:\/\/ad6dm.net\/log\/category\/cw\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/posts\/474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/comments?post=474"}],"version-history":[{"count":5,"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/posts\/474\/revisions"}],"predecessor-version":[{"id":480,"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/posts\/474\/revisions\/480"}],"wp:attachment":[{"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/media?parent=474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/categories?post=474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ad6dm.net\/log\/wp-json\/wp\/v2\/tags?post=474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}