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
The latest CubeSat in the Fox series — RadFxSat (Fox-1B) — launched today (November 18) from Vandenberg Air Force Base in California. The Delta II veh... Read more
Ham Radio Deluxe Updated Fixes and New Features Fault on connection with IP logging enabled – fixed Norton 360 – fixed LOTW upload and dow... Read more
IARU Contest Contest Details 1. Eligibility: All licensed amateurs worldwide. Learn More 2. Object: To contact as many other amateurs, especially IARU... Read more
“A BROWNIE took to the airwaves to speak to girls in the Scouting movement on World Thinking Day. Kathryn Sipple, seven, of the 17th Leig... Read more
In this episode, Martin M1MRB / W9ICQ is joined by Caryn-Eve Murray KD2GUT, Ed Durrant DD5LP , Dan Romanchik KB6NU, Martin Rothwell M0SGL and Chris Ho... Read more
by– Seth Shostak, Senior Astronomer It’s now the biggest single-dish radio telescope on Earth. Settled down in the bumpy karst of China’s Guizh... Read more
Orlando HamCation® will host the 2016 ARRL National Convention in February. The convention will mark the 70th anniversary of HamCation — second only i... Read more
N1MM – Ham radio contest logging N1MM Logger is the world’s most popular ham radio contest logging program. For CW, phone and digital mode... Read more
Photos: Tribuhvan University In the pre-dawn hours of April 25, when my phone buzzed “Q Q Q” — the code I had set to notify me when the USGS Earthquak... Read more
This is the second project using the LinkIt One board in the previous instructable I showed you how to build a distance measuring tape. In this tutori... Read more
Recent Posts
RadFxSat (Fox-1B) Launched Successfully, Designated AO-91
Ham Radio Deluxe Releases Version 6.3
2015 IARU Contest
Brownie Kathryn takes to the airways to say hello
ICQPodcast – Solar Powered Shack released
World’s Biggest Radio Ear
Orlando HamCation to Host 2016 ARRL National Convention
N1MM- I/Q input to Spectrum Window – Ham Radio Logging
Amateur Radio Buffs’ Quest to Connect Quake-Ravaged Nepal
Morse Code Encoder/Decoder using LinkIt One
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
![Elecraft Announce K4 SDR at Hamvention 2019 [ VIDEO ]](https://qrznow.com/wp-content/uploads/2019/05/60357783_1261784310641760_5710649015670931456_n-90x60.png)
![Elecraft Announce K4 SDR at Hamvention 2019 [ VIDEO ]](https://qrznow.com/wp-content/uploads/2019/05/60357783_1261784310641760_5710649015670931456_n-180x120.png)
){kind=link}