Although I see a lot of wireless projects, I’m always surprised at the lack of diversity in the radio portions of them. I’m a ham radio operator (WD5GNR; I was licensed in 1977) and hams use a variety of radio techniques. If you think hams just use Morse code and voice communications, you are thinking of your grandfather’s ham radio. Modern hams have gone digital and communicate via satellites, video, and many different digital techniques that could easily have applicability to different wireless projects.
Of course, Morse code may have been one of the first digital modes. But hams have used teletype, FAX, and other digital modes for years. Now with PCs and soundcards in common use, hams have been on the forefront of devising sophisticated digital radio techniques.
The motivation for devising unique digital modes is two fold. First, hams don’t have unlimited bandwidth, especially in the high frequency (HF) bands that allow for long distance communications. Anything that takes less bandwidth is welcome. Second, HF bands have rough characteristics. Signals fade, atmospheric noise causes static and crashes, and other stations cause interference. There are other special cases too, like bouncing signals off meteors where the right digital strategy can significantly improve odds of getting messages through.….
Read Full Article: Link
IC-PW2 ICOM Icom Inc. will be unveiling new product innovations at the Tokyo Hamfair, taking place in Ariake, Tokyo on August 31st – September 1... Read more
Timor Leste Sei JA7LU will be active again from Timor Leste, 25 to 29 June 2015 as 4W/JA7LU. Hide JI1AVY will be active again from Timor Leste, 25 to... Read more
Time and frequency standard station WWV silenced its 25 MHz signal in 1977, but it returned to the air on an “experimental basis” a year ago, a... Read more
International Amateur Radio Union (IARU) President Tim Ellam, VE6SH/G4HUA, has praised the value of the IARU’s participation over the years in Interna... Read more
RAST 50th Anniversary Read more
A quick tour of VE6JY’s towers/antennas near Lamont, Alberta. Read more
Sacramento Valley ARES Section Emergency Coordinator Greg Kruckewitt, KG6SJT, reports that Amateur Radio Emergency Service (ARES®) volunteers are read... Read more
On the AMSAT Bulletin Board Dave KG5CCI writes: On Saturday, September 5 at 1812 UTC I made a scheduled contact with Manuel, EA5TT, using AO-7 Mode B,... Read more
International Space Station “Hello, America. This is the International Space Station. Who’s out there?” And with that “CQ” of sorts on 145.800 MHz, NA... Read more
The FCC has announced that its large-scale website redesign will be completed by December 10. The switch to the new site is set to begin on December 1... Read more
Recent Posts
IC-PW2 Prototypes Shown at Tokyo Hamfair 2019
4W/JA7LU & 4W/JI1AVY Timor Leste
WWV’s 25 MHz Signal Still Going Strong After 1 Year Back on the Air
IARU Participation in ITU-Radiocommunication Consultations Called “Mutually Beneficial”
RAST 50th Anniversary
VE6JY Antenna Farm
Amateur Radio Emergency Service Volunteers Ready to Assist with California Evacuations
New ! AO-7 Distance Record
International Space Station Crew Member Fires Up NA1SS to Seek Random Contacts
Revamped FCC Website Expected to Debut on December 10
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fsteal-this-ham-radio-technology%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
![Ham Fair Tokyo 2016 ICOM Booth [ Video ]](https://qrznow.com/wp-content/uploads/2016/08/13939479_890089057789361_2098568280735577255_n-265x168.jpg)
){kind=link}