{"id":12592,"date":"2015-03-20T11:07:34","date_gmt":"2015-03-20T15:07:34","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=12592"},"modified":"2015-03-20T11:08:28","modified_gmt":"2015-03-20T15:08:28","slug":"software-defined-receivers-sdrs-for-the-visually-impaired-listener","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2015\/03\/software-defined-receivers-sdrs-for-the-visually-impaired-listener\/","title":{"rendered":"Software Defined Receivers (SDRs) for the visually impaired listener"},"content":{"rendered":"

\"Spectrum<\/a><\/p>\n

At the 2015 Winter SWL Fest<\/em><\/a>, I\u00a0co-hosting a forum on Software-Defined Radios<\/a>. \u00a0Afterwards, a\u00a0radio friend–who happens to be visually impaired–approached me to ask:<\/p>\n

“What is the best SDR for those who are blind or visually impaired?”<\/p><\/blockquote>\n

I’d never been asked the question before, and replied that\u00a0I’d have to do a little research. In truth, I suspected that research would turn up very little that was useful: \u00a0after all, SDRs require a lot of pointing and clicking, and some of the interfaces are rather complicated. Spectrum and waterfalls displays, often at the heart of the SDR app, are visual displays.<\/p>\n

But I kept thinking of my friend’s question. Upon my return, I set out to do a little research and possibly pose the question here on the SWLing Post<\/em>. \u00a0Then assistance stepped in…in the form of\u00a0medium wave DXer Tore Johnny Br\u00e5tveit.<\/p>\n

If Mr. Br\u00e5tveit’s name sounds familiar, that would be because I recently posted a link to an Oregon Public Broadcasting interview with\u00a0him<\/a>. In the interview, he mentioned that he uses SDRs to chase MW DX, and that he is visually impaired.<\/p>\n

I reached out to\u00a0Mr. Br\u00e5tveit via his website<\/a> and asked for any advice he could give about SDRs for those who are blind or visually impaired. \u00a0His enlightening response:<\/p>\n

“In the interview<\/a> I mentioned screen reader software and the need to find SDR software that plays well along with such screen reader software. For those visually impaired who have some eyesight, this aspect may not apply, since many of them are well helped by a screen magnifier software package.<\/p>\n

For those without eyesight at all, or with so little left of the eyesight that they cannot make practical use of the screen, there are these screen reader software packages. They all do the same, but they solve the job in a somewhat different way and are good at different tasks.<\/p>\n

I began using SDRs back in 2007. First I used some [RFspace] SDR-IQs<\/a> for a few years, until I purchased a Winradio G31DDC<\/a> in 2010. The user experience with Winradio was so good that I have stayed with those radios since then, using both G31DDC and G33DDC<\/a> receivers at my remote listening places.<\/p>\n

I think I can say that all the software packages delivered with SDRs have issues and challenges when it comes to using them along with a screen reader. The worst example of unusable native software I have seen so far, is the software package delivered with the [Microtelecom] Perseus<\/a>. I had a thought purchasing one some years ago and make some scripts for my screen reader JAWS<\/a> to see if I could make the Perseus possible to use effectively, but I dropped the idea at that time in favor of Winradio.<\/p>\n

The SpectraVue software delivered with SDR-IQ was usable, but I had to script it quite extensively, especially to be able to use the timeline when playing back recordings. Also the frequency selector was a bit tricky, so I had to assign some hotkey combinations to it. Otherwise it worked fine.<\/p>\n

The Winradio software for the G3x series works quite fine right out of the box. They have apparently thought [through] keyboard operation, and there are shortcuts for almost everything. Such shortcut keys are necessary, as navigating the program interface with a screen reader can be a bit too complicated, especially for those only using speech output from the screen reader to access the screen content.<\/p>\n

I personally am living in a country where we have good access to refreshable Braille displays, which gives me the opportunity to turn off the speech entirely if I want and only use Braille output. This way I can navigate the program interface quite effectively to understand how things are laid out.<\/p>\n

The only real issues I have had with Winradio software, is:<\/p>\n

1. Changing shortcut keys:
\nNormally, the Tab key is used to move between elements on a screen, so it would be natural to think that pressing the Tab key will bring me to the next shortcut key definition. Not in Winradio. Tab can be defined as a shortcut key itself, so trying to navigate the shortcut keys dialog with that key gives you a number of options, all connected to the Tab key. My way around this was to navigate with the Braille display until I found the shortcut key definition I wanted to change, focus on it by pressing a cursor routing key in that position and changing the definition. Then navigate further down to the OK button and activate it.<\/p>\n

2. The timeline:
\nThe timeline used when playing back recordings can be hard to locate when using a screen reader, and even more difficult to work with, since when you press a cursor routing key on the Braille display to simulate a mouse click on it, the focus often moves to somewhere else on the screen. Then you have to work hard to locate back to that timeline again. My solution here was to script my screen reader with a hotspot at the timeline with a shortcut key assigned to it, so that I could move focus back there by pressing a key.<\/p>\n

Among the third-party software packages developed for SDRs, I have found few that I can recommend. The only one I can think of, is HDSDR<\/a>. Especially in the current version from November 2013, there are a number of useful shortcut keys, and the program seem to work very well. I have used it a bit with an AFEDRI SDR I have, and have also used it to play back older SDR-IQ recordings.<\/p>\n

So, if nothing else works, Iwould say that HDSDR is the solution, since it is both easy to use and have support for a number of receivers. And it is free, as you certainly know.<\/p>\n

[…]Please write back if I can help you any further”<\/p><\/blockquote>\n

Brilliant! \u00a0What a treasure trove of information for our visually-impaired\u00a0SDR listeners and operators. \u00a0Thanks so much, Mr. Br\u00e5tveit, and please keep in touch with us here at the SWLing Post. \u00a073s!<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

At the 2015 Winter SWL Fest, I\u00a0co-hosting a forum on Software-Defined Radios. \u00a0Afterwards, a\u00a0radio friend–who happens to be visually impaired–approached me to ask: “What is the best SDR for those who are blind or visually impaired?” I’d never been asked the question before, and replied that\u00a0I’d have to do a little research. In truth, I […]<\/p>\n","protected":false},"author":15,"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":[8,1114,3194,627,3,26,129,43,158,5],"tags":[3718,3715,3716,3674,3717,3719],"class_list":["post-12592","post","type-post","status-publish","format-standard","hentry","category-articles","category-digital-modes","category-guest-posts","category-how-to","category-news","category-radios","category-reviews","category-shortwave-radio","category-software-defined-radio","category-swlers","tag-blind-shortwave-listeners","tag-sdr-visually-impaired","tag-software-defined-radios-visually-impaired-blind","tag-tore-johnny-bratveit","tag-visually-impaired","tag-visually-impaired-shortwave-listeners"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-3h6","jetpack-related-posts":[{"id":43608,"url":"https:\/\/swling.com\/blog\/2020\/05\/christophs-homebrew-custom-hotkey-pad-for-sdr-applications\/","url_meta":{"origin":12592,"position":0},"title":"Christoph’s homebrew custom hotkey pad for SDR applications","author":"Thomas","date":"May 29, 2020","format":false,"excerpt":"Last week, I saw a fascinating post by Christoph Jahn on the SDRplay Facebook page. Christoph created a custom hotkey pad for use with SDRuno.\u00a0 The project is actually quite simple and his finished product looks amazing: The steps involve downloading \"LuaMacros\" a freeware macros utility that allows you to\u2026","rel":"","context":"In "Accessories"","block_context":{"text":"Accessories","link":"https:\/\/swling.com\/blog\/category\/accessories\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/SDRuno-Keypad.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/SDRuno-Keypad.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/SDRuno-Keypad.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/SDRuno-Keypad.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/SDRuno-Keypad.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":43314,"url":"https:\/\/swling.com\/blog\/2020\/05\/ed-discovers-a-shortwave-portable-marketed-to-visually-impaired-listeners\/","url_meta":{"origin":12592,"position":1},"title":"Ed discovers a shortwave portable marketed to visually impaired listeners","author":"Thomas","date":"May 13, 2020","format":false,"excerpt":"Many thanks to SWLing Post contributor, Ed, who writes: While perusing products for a disabled family member, I came across this shortwave portable for visually impaired listeners. Its HF coverage is limited to 2300 - 21950KHz, but it also receives standard AM & FM and plays mp3 files from a\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/L258-ez-fm-am-sw-multiband-radio-mp3-speaker.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/L258-ez-fm-am-sw-multiband-radio-mp3-speaker.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/L258-ez-fm-am-sw-multiband-radio-mp3-speaker.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/05\/L258-ez-fm-am-sw-multiband-radio-mp3-speaker.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":30942,"url":"https:\/\/swling.com\/blog\/2018\/02\/portable-ssb-radios-for-people-who-are-visually-impaired\/","url_meta":{"origin":12592,"position":2},"title":"Portable SSB radios for people who are visually impaired","author":"Thomas","date":"February 28, 2018","format":false,"excerpt":"Many thanks to SWLing Post contributor,\u00a0Svein Tore, who writes: I'm blind. The type of shortwave radio I like best, is the analogue type with a tuning wheel, because I don't need sight to use it, and I have full control over the receiver. I would like to buy a radio\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/11\/Sony-Vintage-radio-ICF-5800H-002-1-1024x576.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/11\/Sony-Vintage-radio-ICF-5800H-002-1-1024x576.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/11\/Sony-Vintage-radio-ICF-5800H-002-1-1024x576.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":38539,"url":"https:\/\/swling.com\/blog\/2019\/07\/the-sangean-pr-d17-an-am-fm-stereo-radio-designed-for-those-who-are-visually-impaired\/","url_meta":{"origin":12592,"position":3},"title":"The Sangean PR-D17: An AM\/FM stereo radio designed for those who are visually impaired","author":"Thomas","date":"July 17, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor, Doug Hunsinger, who notes that Universal Radio is now shipping the Sangean PR-D17. The PR-D17 has a unique design to make operation easier for those who are visually impaired. Per Universal Radio: It has high-contrast, large yellow rotary tuning and volume control knobs, preset\u2026","rel":"","context":"In "AM"","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Sangean-PR-D17-e1563383233559.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Sangean-PR-D17-e1563383233559.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Sangean-PR-D17-e1563383233559.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Sangean-PR-D17-e1563383233559.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":38997,"url":"https:\/\/swling.com\/blog\/2019\/08\/a-review-of-the-sangean-pr-d17-portable-am-fm-radio-for-the-visually-impaired\/","url_meta":{"origin":12592,"position":4},"title":"A review of the Sangean PR-D17 portable AM\/FM radio for the visually impaired","author":"Thomas","date":"August 13, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor and producer, Peter Atkinson, who shares the following review of the new Sangean PR-D17 AM\/FM radio: Sangean PR-D17 review by Peter Atkinson I\u2019ve been visually impaired all my life and a radio enthusiast for over 40 years.\u00a0 I was intrigued when I learned that\u2026","rel":"","context":"In "AM"","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"Close up of RDS display","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/08\/Front-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/08\/Front-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/08\/Front-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/08\/Front-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":38777,"url":"https:\/\/swling.com\/blog\/2019\/08\/sangean-pr-d17-now-shipping\/","url_meta":{"origin":12592,"position":5},"title":"Sangean PR-D17 now shipping","author":"Thomas","date":"August 1, 2019","format":false,"excerpt":"I just received the following note from my contact at Sangean: \"We received our first [PR-D17] shipment yesterday and are starting to ship to our customers.\" After making an initial post about the PR-D17--a radio designed specifically for those who are visually-impaired-- I've received several inquiries so I thought I'd\u2026","rel":"","context":"In "AM"","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Sangean-PR-D17-e1563383233559.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Sangean-PR-D17-e1563383233559.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Sangean-PR-D17-e1563383233559.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Sangean-PR-D17-e1563383233559.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/12592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=12592"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/12592\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=12592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=12592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=12592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}