My Realistic DX-350A, which for a few years in the 2010's was my mainstay MW DX radio, in front of my Crate loop I made in 2011. I still DX with the DX-350A maybe once or twice a month.... Radios are meant to be played.
Dear Readers: Here is a blog article I'd forgotten about -- I wrote it after a flurry of MW Auroral DX, where the ionosphere makes MW distance listening interesting by boosting signals from Southern US regions. Sorry for the delay, but here 'tis.
Recently, as even non-radio hobbyists know, we've had a flurry of Auroral activity in the Northern Hemisphere (where there was any in the Southern Hemisphere I don't know -- it obviously didn't make the news here).
When there is Auroral activity, sometimes the Northern Lights show up as far south as the northern tier of US states. And the Shortwave and Mediumwave radio bands are affected as well. The extra solar radiation zaps the ionosphere and makes it absorb radio signals instead of reflect them back to Earth.
The overall effects of an Aurora can vary -- usually there are 'radio blackouts' (as just described). You'll hear distant signals on the SW or MW bands get weaker and weaker as the Aurora hits -- or you'll turn on your radio one night and there's nothing but grainy sounding static.
This happened recently. About three nights ago I turned on my Realistic DX-394 and tuned the SW ham bands. There was very low activity, and as I was tuning through the 40 Meter ham band, any and all signals just faded down to nothing. It was the same thing with the 30M ham band, and the 20M ham band.
The Shortwave broadcast bands were mostly dead. 49 Meters had non-existent audio for WRMI, WWCR, and Radio Marti was barely audible in the grainy static. A couple other stations that are usually on during the evening -- Radio Educacion on 6185 kHz, and Nikkei 1 and 2 on 6055 and 6115, were extremely weak carriers that even the BFO barely made audible -- you had to listen for them.
MW was like a poor summer night.
Then, after a day or so, the Aurora dissipated. When that happens, often it's a fun time to DX the AM band, because here in the PNW US that means that California, Nevada, and sometimes Mexican radio stations will show up!
On the night of the 14th, it was exactly that way. Some Northwest mainstays like KOAC 550 (Corvallis Oregon), KXTG 750 (Portland, Oregon), CBK 540 (Saskatchewan), KONA 610 (Pasco, Washington), and other regional stations were completely gone, replaced by other weaker signals from further south, or just static.
KXTG 750 was missing -- 750 kHz was just static. KOAC 550 (normally always dominant on 550) was gone, replaced by a very weak KARI Blaine WA (about 150 miles north of me), and
The next night, the AM band returned at least partly to normal. KOAC 550 was in with Oregon Public Radio news, but conditions overall were a little different from normal. Some regular stations weren't in well, and I heard a few California stations much, much better than normally!
On 1270 kHz, I heard KXBX Lakeport, California with Classic Hits, and I also heard KBZZ Reno with Classic Rock and a full, "92.5 The Hawk!" ID! (Actually, they're called "The Hog"). I haven't heard KBZZ since it was a sports station back in the early 2010's! I also heard KEAR 610, a religious station out of San Francisco that plays soft music and hymns at night, and KLBS Los Banos, California, was in on 1270 also! They have Portuguese language talk and music, serving the Portuguese speaking people in the San Joaquin Valley of Central California.
MORE ADVENTURES WITH MY SANGEAN PR-D5
As many of you may know, I have one of these Sangean radios that are known for being really good on MW/AM. Sangean PR-D5's are like mini-boomboxes, which also have an AUX IN so you can plug your phone or tablet into the jack and listen to streaming in stereo. I used to listen to Norway's NRK Norske Folkemusikk channel all the time on my PR-D5 that way.
I also discovered a button pressing glitch that seemed to occur on my PR-D5 after the radio had been powered up for several months. It seemed that the constant powering of the radio -- which kept the microprocessor working in the background, waiting for the Power button to be pressed -- would cause the microprocessor's firmware to read the buttons oddly.
For example, I'd have to press the Power button several times to get the radio to recognise that I was pressing it. Sometimes I'd press a button and an entirely different function would occur (like I would press a memory channel button and the PR-D5 would switch from AM to FM instead).
I discovered the fix out of frustration. I pulled the batteries, and pulled the plug from the AC wall adaptor, and reset the radio that way.
The re-set worked. The radio's buttons started working normally. A few years later, sometimes the re-set wouldn't completely work. I found that pressing the Power button after de-powering the radio did the trick.
I wrote an article about this button issue in 2017 or so. Here is a link to that article, where I go into more detail about it. Other PR-D5 owners who had the issue also found that the re-set fixed their radios.:
Recently, that hasn't been working 100%. I finally resorted to spraying contact cleaner down the side of all the buttons a couple times, working them after each spray. I wiped the excess off the front of the radio with a paper towel.
Presto! The radio acts like new again.
It appears that if your PR-D5 has been sitting, unused, for several months (I hadn't used my radio in probably a year, using my Superadios in my writing Den instead), the buttons can either oxidise, or they need to otherwise be exercised to work properly again.
NOW, these fixes may work on many of the Sangean AM-FM only radios. I have experienced these button glitches with my PR-D5, PR-D14, PR-D18, and a couple times my PR-D4W even acted up. It's obvious that something in their firmware can develop these button glitches over time.
The buttons are fine, the radio circuits and 'brain' are all fine, it's just that the firmware will act up if it sees continuous power for too long.
And the buttons themselves either need exercising (i.e., actual use) or they may need a shot of contact cleaner down the side of the buttons now and then. And periodically re-setting your radio (depowering it completely, letting it sit for 15 seconds or so, and maybe pressing the power button to clear the residual charge in the microprocessor) is probably a good idea, too.
This was another article sitting dormant, that I had forgotten I had written. So here it is, nearly two months late. Better late than never.
I still am finishing the article on the mediocre Solar Cycle 25. I have been sitting on that one for almost a year. Here it is, December, during a 'peak year', and the SW DX conditions are mostly crap and MW DX conditions aren't anything like they were in 2011-2014.
So, it's time to publish that article, being that my assessments of Solar Cycle 25 turned out to be very accurate.
I shall get that article out within the week.
Peace,
C.C. 12-18-2024
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