Shortwave listening and everything radio including reviews, broadcasting, ham radio, field operation, DXing, maker kits, travel, emergency gear, events, and more
Many thanks to SWLing Post contributor, Dan Robinson, who writes:
I like to note appearances by shortwave receivers in TV programs…here’s the latest…at the 14 minute mark of the new season of NARCOS (one of the best TV series there is by the way) a ICOM IC-R71A makes an appearance. At the point in the show, a key character is listening to reel-to-reel tapes, so it’s not quite clear why they stuck in a 71A tuning to a shortwave frequency….ah, the drama! Another show, The Americans, features numerous shots of various receivers, including Zenith Transoceanics and Hallicrafters…
For those who follow numbers stations or, like me, enjoy seeing articles about numbers stations, below are a few paragraphs from a recent article in Radio Worldby author James Careless:
“6-7-9-2-6. 5-6-9-9-0.” Tune across the shortwave bands (above AM/MW), and chances are you will come across a “numbers station.” There’s no programming to speak of; just a mechanical-sounding voice (male or female) methodically announcing seemingly random groups of single digit numbers for minutes on end.
Congratulations! You are now officially a spy-catcher, to the extent that you may have tuned into a spy agency’s “numbers station” transmitting one-way instructions to their minions worldwide.
Numbers stations are unidentified radio broadcasts that consist usually of a mechanical voice “reading out strings of seemingly random numbers,” explained Lewis Bush, author of “Shadows of the State” a new history of numbers stations and the spies who run them. “These are sometimes accompanied by music, tones or other sound effects.” He said. “There are also related stations broadcasting in Morse Code and digital modes.”
The article goes into some of the history of numbers stations, but also talks about modern stations from all over the world. A worthwhile read for those so interested!
Several readers have requested “under the hood” photos of each radio, to compare internal designs. This morning, I had a few minutes to crack open each radio and take a few shots. Note that I didn’t pull off the circuit boards from the chassis or try to take a look behind shielding. I have yet to do proper performance comparison tests with these radios and didn’t want to accidentally compromise one (especially since the XHDATA D-808 is getting complicated to purchase here in the US).
Inside the XHDATA D-808
Opening the D-808 requires pulling off the encoder knob and removing a total of six small screws. Note that one of the screws is located in the battery compartment. Click photos to enlarge:
Inside the Digitech AR-1780
Opening the AR-1780 requires pulling off the encoder knob (not an easy task on my unit) and removing a total of seven small screws. Note that two of the screws are located in the battery compartment. Click photos to enlarge:
When the clouds part and the sun shines during the winter in the Seattle, Washington area, it’s time for a celebration! I decided to take advantage of the mild weather and compare the XDATA D-808 (a real upstart in the marketplace, and a value leader in portables) against a few other radios on a nice daytime signal from Radio New Zealand International, 15720 kHz.
Besides the D-808, receivers compared to each other were: the C. Crane Skywave SSB (complete with stray cat’s whisker on the LCD :^) , the Eton Executive Satellit, the Grundig G3, and a beautiful example of the rare Sony ICF-SW1000T (sometimes called the Sony Shortwave Walkman due to the built-in cassette recorder). My apologies for the lower audio setting on the G3.
The antenna used with each radio was a PK Loops “Ham Loop” antenna, which is advertised as covering 3.5 – 14.5 MHz, but my loop actually tunes approximately 3.2 MHz to 15.8 MHz. I also briefly received RNZI on each radio’s own whip antenna.
I used the 3.0 kHz bandwidth on all the SiLabs DSP radios, and the narrow filter on the G3. The ICF-SW1000T has a single filter, so it cannot be adjusted.
Since the G3 and the ICF-SW1000T have the option of synchronous-AM detection, in the video I cycle through those modes on these receivers.
RNZI on their 15720 kHz frequency is often at a good, program listening level in my local afternoons. Next week I plan to seek out and share videos of the D-808 with weak DX signals from an RF-quiet location on the Oregon coast.
Which receiver sounds the best to you with the external antenna, and which one shines with its own whip aerial? Please share your thoughts in the comments below.
Guy Atkins is a Sr. Graphic Designer for T-Mobile and lives near Seattle, Washington. He’s a regular contributor to the SWLing Post.
As you well know, Mark, I’m a certified pack and case geek. Seeing how well it fits your D-808, I know the Digitech AR-1780 should fit too.
How enabling of you, Mark! I think I’ll have to grab one of these. I have a couple of Otterboxes, but all larger (deeper) than this one. Purchasing a used case would be safe as Otterbox products are incredibly durable and nearly indestructible. Thanks for the tip, Mark!
Many thanks to SWLing Post contributor, Rolf Snijder, who shares the following modification for the Sony ICF-SW35. The mod is very simple: remove one capacitor.
Rolf shows the capacitor location on the following images:
Many thanks to SWLing Post contributor, Ivan (NO2CW), who writes:
I have been running a public Kiwisdr server for a while and yesterday decided to plug in the new Airspy HF + into the same antenna for a side to side comparison. The antenna is an 80m dipole and the test was done during local afternoon, around 3 PM. I did not use any of the many new noise reduction features that are incorporated into both SDR Console 3 and the SDR web server. The 11 minute video is located here:
