Like most Friday mornings, yesterday at 11:00 UTC, I tuned to 9,580 kHz to listen to Radio Australia news and ABC National’s technology program Download This Show.
While the signal out of Shepparton, Australia was as strong as ever, I heard adjacent interference from China Radio International.
Indeed, looking my WinRadio Excalibur‘s spectrum display (see image on right), you can see that CRI’s signal on 9,570 kHz was actually producing noise 15 kHz on either side of their AM carrier (for a total bandwidth of 30 kHz!). Radio Australia’s signal was much cleaner, sticking to their allotted 10 kHz bandwidth limit.
The recording of Radio Australia was still quite good, despite the interference, because I was able to run the Excalibur’s AM sync detector locked on the (less noisy) upper side band.
While I’m passionate about shortwave radio–a technology that has, of course, been around for many decades–I also love to hear about emerging digital technologies, especially those that make our world a better place.
These days, I listen to several shows about technology, many of which are only available as a live stream or podcast (like TWIT, for example).
There are two shows, however, that I like to listen to on shortwave radio when my schedule allows.
One such show is the BBC World Service technology show, Click (formerly Digital Planet). I’ve listened to Click for years, and have even been interviewed on the show by its marvelous host Gareth Mitchell (click here to listen). I especially love the show’s focus on technologies that have a positive impact in developing countries (hence my interview, about my non-profit, ETOW). Mitchell, I’m delighted to add, is quite the fan of shortwave radio as well, and is not afraid of reporting on technologies that are not exclusively tied to smart phones and the like.
Another show I’ve been listening to for a few months is Download This Show on Radio Australia. It’s a fun and informative technology program and always has a great panel discussion on technology news. What I really love about this show is its take on Australian technology in particular, and how this compares with technology in the rest of the world.
Since Download This Show is broadcast via Radio Australia’s Shepparton transmitting site, the signal is quite strong here in North America and easily received on portable shortwave radios.