Tag Archives: Guest Posts

An Informal Hands-On Comparison of the Tecsun H-501x, Belka, and Sony ICF-2010/2001D

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Radio Thoughts and Reflections: An informal hands-on review of the Tecsun H501x, Belka, Sony ICF 2010 / 2001D

by Julian Stargardt

This review started as a comparative review of the Tecsun H501x and the Sony ICF 2010 / 2001D. It developed into something more.

I fell in love with radio when as a 5 or 6 year old child, my parents parked an old multi-band thermionic valve / tube radio on a small table in my bedroom. After a few evenings of staring at this wooden beast with its glass face on one side of the front with rows of numbers, I plucked up courage to plug it in, and turn it on. It lit up and after a while it hissed at me. I twiddled some knobs and eventually found some faint speech and then some quite loud music, presumably a local MW broadcaster of the sort for whom a central heating radiator will suffice as a receiver – yes if you’re near enough to the transmitter an old fashioned cast iron water-filled ribbed radiator will work as a MW receiver, the audio isn’t great but you can hear it. A phenomenon that should appeal to steam punks. After a few days, I figured out that I could plug a long wire – actually quite short to start with, only about 5 feet initially, later this grew into a long wire mostly outside. Wow! I could hear all sorts of stations in all sorts of languages. My favourite was an American station that broadcast Country and Western. I invited my younger brother to my room and explained that the Country and Western music was “cowboy music”…. So a love affair started that persists to this day.

In my 20s and early 30s, I set up a National HRO with its coils and external power supply in my study at home, with an excellent long dipole in the garden; that setup could pick up anything from anywhere…

A Sony ICF 2001D aka 2010 also entered my life. Much more portable than the HRO. By the way, for reasons best known to itself, Sony sold the same radio under two different names; in the USA it was called the Sony ICF 2010, and in the rest of the world it was called the Sony ICF 2001D – not to be confused with the 2001….

The Sony ICF 2010 / 2001D was made from 1985 to 2003. That must be a record or close to a record for a consumer portable broadband radio receiver. And it reflects on what a wonderful radio the 2010 / 2001D is. To many of us it’s a benchmark. For people who worked in remote areas in the pre-internet age it was a window on the world that brought in news, views and entertainment from around the world. At times it could be a life-saver.

So 23 years on is there a worthy equivalent or successor to the Sony 2010 / 2001D?

Yes, there is.

There are any number of radios available today that perform as well as or in some ways better than the Sony 2010 / 2001D. Some are out of production but still readily available on the 2nd hand market. A number are in production. Some are larger and heavier; some are smaller; a few are much smaller.

The Sony ICF 2010 / 2001D has a certain presence and form factor. It brought phase-locked loop and synchronous detection to the consumer market, though I’m not sure it was the first. It was part of a wave of radios of that era, some of which are notably better, but Sony captured the lion’s share of that segment of the consumer market and won the hearts and minds of many. So what, in my view, is the modern current production successor in size and capability to the Sony ICF 2010 / 2001D?

It’s the Tecsun H501 / H501x. In Tecsun usage, the “x” or “X” suffix denotes the export version, with literature and labeling in English.

So how does the Tecsun H501x compare with the Sony ICF 2010 / 2001D?

In a word or two: It’s better.

Yes, I know, that verdict might be controversial to some and will raise some eyebrows here and there.

“What about the synchronous detection?” some will ask.

The Sony has legendary synchronous detection, which is generally, though not always, better than the Tecsun’s

But the Sony’s synch is nowhere near as good as today’s Belka’s. I mention that because some reviewers appear to give the impression that the Sony ICF 2010 / 2001D’s synchronous detection is the best available. It is good. But it’s not the best.

A brief digression about the Belka and some Antenna Options

And if you want a pocket-sized high-end communications receiver and you’re willing to pay a few hundred US dollars for the privilege, the Belka is in a league of its own. It’s tiny. It’s robust (the case is thick aluminium). The battery lasts, well, not quite forever, but nearly. Alex, who designed and makes the Belka, claims conservatively that the battery lasts 24 hours of continuous reception.

The Belka has features usually only found in professional rigs. But it doesn’t have FM, and relying on a whip antenna makes listening to Medium Wave or Long Wave in a radio-frequency-interference-rich urban environment either impossible or at least a challenge. But there are solutions to that MW reception issue:

  1. a compact Medium Wave magnetic loop or
  2. a ferrite rod.

You could make your own compact magnetic loop or ferrite rod, or you can buy a ready-made one. Keep in mind that the Belka does not have an internal ferrite rod so inductive coupling will not work, you’ll need a BNC connector to connect to the Belka’s antenna socket.

There are a number of compact magnetic loops on the market; one interesting manufacturer is PK Loop, a family-owned business that specializes in magnetic loop antennae and makes indoor and outdoor, passive and active LW, MW and SW loops. These have been reviewed on SWLing; I haven’t got one yet, so I have no personal experience of them. They’re helpful and respond promptly to emails. Their website is: https://www.amradioantennas.com/

I use, and I recommend Tecsun’s AN100 or AN200 compact passive tunable MW magnetic loops. They’re basically the same loop; they just feature different bases. You’ll need a BNC adaptor

Alternatively, you could buy Tecsun’s AN48x active loop set, which comes complete with a wide assortment of adapters, including a compact ferrite rod antenna for inductive coupling of the AN48x’s active loop to the internal ferrite rod of a radio that lacks an external antenna. Tecsun’s little ferrite rod works well on its own as a MW ferrite rod and can be connected to the Belka using the AN48x’s supplied 3.5mm / BNC adapter. I recommend the Tecsun AN48x kit, not only for the AN48x active loop antenna but especially for the wide selection of connectors supplied with this kit, including RCA, BNC, 3.5mm, crocodile clips, and the ferrite rod. At Anon-Co.com, it retails for US$29.99; US stock is sold out, so if you’re in the USA and order it, you will currently possibly have to pay a surcharge for tariffs. Anon-Co.com’s listing for the AN48x is at: https://www.anon-co.com/product/tecsun-an48x-antenna

I digress. I’ll probably do so again.

Back to the Tecsun H501x.

Why do I say the H501x is a worthy successor to the Sony? Well, look at the comparative photos. They’re both pretty much the same size. The Sony’s a touch longer and a touch thicker. The Tecsun is a tad higher, but we’re talking millimetres here folks, so to the non-anal among us they’re roughly the same size. They’re both well built, almost robustly built. But the Sony weighs more, a lot more. And with batteries loaded, that weight difference is all the more noticeable.

The Sony ICF 2010 / 2001D weighs 1.8kg / 4lbs with its batteries.

The Tecsun H501x weighs about 1.1kg / 2.4lbs with both batteries fitted, though only one is needed to operate the radio.

The Tecsun beats the Sony hands down on ergonomics and on ease of operation. Though the Sony is also very simple to use. For example, entering a direct frequency input on the Sony requires 2 steps: step 1, enter the frequency; step 2, press enter- no big deal. On the Tecsun, in common with most Tecsun communication receivers, enter the frequency, and that’s it. Just one step.

Another big-ish difference: chuffing. The Sony chuffs. When rotating the tuning knob on the Sony, it chuffs; the chuff isn’t as awful as on some radios, but it’s there, and it’s noticeable. The Tecsun, like most Tecsuns, doesn’t chuff. And speaking of tuning knobs… some reviewers complain about how the Tecsun tuning knobs are set into the body of the radio and how this makes tuning difficult. Well, the Sony tuning knob is recessed slightly into the body of the radio. OK, the Sony tuning knob has a dimple in it into which one can fit a finger to twirl the tuning knob as it chuffs through frequencies. But if you’re trying to tune the Sony using the tuning knob without the dimple, then the aperture on the front panel of the Sony is noticeably smaller than on the Tecsun. And the Tecsun tuning knob is a little proud of the body so it can be grasped, and it has a synthetic rubber inset that makes twirling it without chuffing through the frequencies quite easy.

Looking at the Tecsun, the main tuning knob and the fine tuning knob are on the right side. On the right side of the radio, above the main tuning knob are an AM, ie LW, MW and SW external antenna socket and an FM antenna socket, and below the fine tuning knob is a USB charging socket, a Type-C socket on current production and a Type-B on older models. The Tecsun comes with a charging adaptor plug and cable; alternatively, one can charge using a 5 volt charger. On the left side, the 3 knobs are, from top to bottom: volume, treble, and bass knobs. On the lower left of the front face are the Headphone socket, a line-in socket, and a line-out socket. The tuning and audio knobs are accessible via apertures on the front of the radio, or they can be turned from the side either by grasping the slender portion of the knob that stands proud of the body of the radio, or by placing one’s finger on the synthetic rubber inset and twirling the knob that way.

The Tecsun comes with a high-quality cotton-lined – at least I think it’s cotton – leatherette vinyl travel bag, stereo headphones, 2 x lithium-ion 1860 batteries, a comprehensive, well-illustrated, easy-to-follow instruction manual and a double-sided wall chart, on one side is a large map of the world showing time zones, on the other side is a colour illustrated quick start guide to the radio. One of the extras the H501x is supplied with is a micro-SD Card player; there is a micro-SD card slot fitted to the radio, and a micro-SD card is provided. The H501x micro-SD does not record; it only plays. By the way, the AM antenna socket serves all AM bands, LW, MW, and SW; I think that’s a nice touch. It means one can attach an external antenna for all bands without hassle. If your antenna has an RCA or BNC connector, you will need an adaptor to a 3.5mm antenna plug

Why is this Tecsun called the H501? Why not the PLXXX? The name is a tribute by Tecsun’s founder to his Alma Mater and to his class. A nice touch in my view. Tecsun’s founder is passionate about radio. He’s been building radios since he was a boy. We owe Tecsun’s continuing production of high-quality consumer portable radios to their founder’s love and passion for radios, and in particular shortwave listening.

I understand that Tecsun’s founder has done everything he can to optimise the SI radio chips but that the issues other reviewers have mentioned about synchronous detection and USB and LSB are inherent to the SI chip architecture. Don’t get me wrong, synchronous detection works and it can be useful; USB and LSB also work. But their audio is not great because low frequency is cut off at a point that affects the overall sound quality. Like everyone else, including Tecsun’s founder, I wish something could be done about this too.

I find the H501x’s volume and separate tone controls are very useful in helping to resolve shortwave signals, especially in a radio frequency interference-rich environment.

Long wave, Medium wave and FM performance are all good. In LW and MW, the maximum bandwidth is 9KHz, or likely wider, which enables hi-fi-like audio from strong stations.

FM stereo performance is impeccable, especially with headphones.

The Tecsun H501x has multiple bandwidths. In broadband listening, these range from 2.3 to 9 in LW and MW and from 2.3 to 6 kHz in SW. In practice, it seems the bandwidths might be wider than stated. The Sony ICF 2010 / 2001D has 2 bandwidths, “Wide” and “Narrow”.

What are those two grilles on either side of the front (and the back) of the H501x? They are the stereo speaker grilles. Yes, ladies and gentlemen, the H501x is a true stereo radio, and the audio is good. It’s not going to replace a high-end HiFi system, by the way, Tecsun are venturing into those too, but for a portable radio, the on-board loudspeaker audio is good, and via good quality headphones, or via the line-out socket on the H501x’s front panel to your stereo system, the audio is excellent.

The Tecsun operates on one lithium 18650 battery, this has become a widely available battery. The H501x comes with two batteries. Yes, batteries are included. And the H501x has two battery slots. The radio only needs one battery to operate and the battery slots are switchable by a switch on the base of the radio. This means that if one of these long lasting batteries is nearing its recharging time, you can switch to the fresh battery already in place.

Why did I choose the Tecsun H501x and not another receiver as the successor to the Sony 2010?

Mainly because the Tecsun H501x has taken the size, form factor, and user-friendliness of the Sony and improved on it; in terms of audio, ergonomics, user-friendliness, and weight, the Tecsun H501x is a considerable improvement on the Sony. One can see some design cues in the H501x, mainly in the overall shape, from the Sony, but where the Sony is very angular, the Tecsun is rounded. The Tecsun’s design cues come more from the classic Grundig Satelit 700, a competitor of the Sony ICF 2010 / 2001D. And that is no surprise; Tecsun manufactures, or used to, Grundig-branded radios. The Grundig Satelit 700 looked better and had superior ergonomics to the Sony ICF 2010 / 2001D, but, so I understand, the Grundig performed less well on SW reception, and if memory serves me correctly, that was also my experience when I did an A / B test of the two radios back in the early 1990s. I currently have several Sony ICF 2010 / 2001D radios and I do an almost daily comparison between a selection of my radios’ shortwave reception. The Sony is good, very good. And when you consider that it’s a 30+ year old radio, that is an excellent result. But the Tecsun H501x is better, with the solitary exception of synchronous detection discussed above. The Tecsun’s sync works; the Sony’s works considerably better. Does one need synch? Rarely. Or not really, depending on your SW listening preferences.

There are still plenty of Sony ICF 2010 / 2001D on the market, and one can pick them up in varying conditions. But expect to pay at least US$300.00 plus shipping for a Sony in adequate condition; prices vary, and there are sellers out there offering Sony ICF 2010 / 2001D for 4 figures. For US$500.00 or so plus shipping, you should be able to find a Sony ICF 2010 / 2001D in good, clean condition and good working order. Remember the Sony ICF 2010 / 2001D is at least 23 years old and more likely 30+ years old.

Common failings are the back-light, bleeding LCD, battery leaks, and circuit faults. The Sony was supplied with a power adaptor – this is not a charging unit. The Sony uses 2 x AA batteries to power the clock and computer and 3 x D Cells to power the radio. The Sony has two power switches. A main power switch on the side and an on-off switch on the top front panel to the immediate left of the LCD. First, turn on the main power switch, then turn on the front panel switch. If the LCD shows “ERROR 3” wait a moment to see if the error message goes away. If the error message persists, check that the main power switch at the lower left side of the radio is ‘On’. If both power switches are on, check that the batteries are properly installed, that all battery connections are dry, and that there’s a good battery circuit; also check the power of your batteries with a voltmeter. If you still can’t power on your Sony, do a thorough circuit test and check to find the fault.

So how much is the Tecsun H501x?

Well, its new price from Anon-Co.com in the USA and in the rest of the world is US$298.00. Remember, if you’re in the USA and you’re ordering from Anon-Co.com, make sure you order the USA delivery item so you’re not hit with tariffs.

I love Tecsun radios, and I am delighted that Tecsun continues to produce this kind of high-quality broadband radio. I wish they could overcome the synchronous detector audio and stability issues and the USB / LSB audio issues; on the other hand, I love the fact that in USB mode, Tecsun’s high-end shortwave radios tune in 10Hz steps. I remember my astonishment when the PL880x came out and tuned in 10Hz steps; not so long ago, a 10Hz tuning step was unavailable except on expensive professional gear. To find that kind of sophistication in a radio the size of a not-very-large paperback book took my breath away. 10Hz tuning steps have become a tradition for Tecsun in their medium- and high-end portable broadband receivers, even in the inexpensive pocket-sized PL330 or PL540.

Tecsun produce a wide range of radios, you can feast your eyes on their radios and accessories either at Tecsun’s own website, or at Anon-Co.com or at Tecsun Radios Australia – www.tecsunaustralia.com.au

I’ve enjoyed writing this review and I might follow up with another comparative review of vintage and modern radios.

FYI: I don’t have shares in or get free radios from any of the brands and businesses mentioned above. I’m just a keen SW Listener who delights in the fact that Tecsun continues to produce good quality shortwave radios and accessories.

Video Clips

XHDATA D-219

The XHDATA D-219 Shirt-Pocket Radio

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The XHDATA D-219 is a shirt-pocket radio which performs quite well, especially given the low price point of  ~$13. Paul Jamet has already done an excellent review of this radio (even the same color as mine!) which can be found here. I encourage you to check out Paul’s excellent review, as I am only going to add my experience with the review radio I was sent by XHDATA.

As I typically do, I tested the radio stock – no additional antenna support or boost. Like any portable, a clip-on wire would likely boost performance, but I test radios in their basic state when promoted as a portable radio like the D-219.

Reception was quite good from the solid antenna and (presumably) internal ferrite. AM stations were plentiful and loud; FM stations were also solid and plentiful to my rural location. Shortwave radio was surprisingly good considering the use of the telescopic antenna. The antenna is made well, rotatable, and solid enough for any typical handling.

The side tuning dial is sensitive but very controllable, with slight adjustments bringing in new stations. For such a small radio, I had no difficulty reading the analog-style display, and the front slider moved between bands easily.

Jacks and Kickstand

On/Off switch, DC 5V input, and headphone jack along with Kickstand

I appreciate that the radio runs on two standard AA batteries, and has a fold out kickstand. It does also have a DC 5V input (power cable not included), but I did not test it for noise/birdies as again, to me a portable radio will not, under normal circumstances, be tethered to an outlet (did I mention I hate wires?!).

With headphones plugged in the audio is strong and clear, mono, but coming in both sides for that middle of the head effect. Of course, it also works with a single earbud with a mono or stereo plug on the end. Audio without the headphones is also good – as I have noticed with many of the newer Chinese radios, miniaturization allows more room for speakers, and the D-219 does not disappoint.

At this price-point it is hard to find fault with the radio. Within its reasonable limitations, it performs way above what one might expect, as do many of the new radio offerings. Analog looks with digital precision – what’s not to like?! Besides, being a retro kind of guy, I like these portable radios for on-the-go listening!

73, Robert K4PKM

From Missouri to Oklahoma: Discovering America’s Secure Nets on 5140 kHz

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Many thanks to SWLing Post contributor Don Moore–noted author, traveler, and DXer–who shares the following post:

Icom IC-756 Pro Transceiver DialThe Missouri and Oklahoma Secure Nets

By Don Moore

Don’s traveling DX stories can be found in his book Tales of a Vagabond DXer [SWLing Post affiliate link]. If you’ve already read his book and enjoyed it, do Don a favor and leave a review on Amazon.

I’m always looking for new stations to add to my logbook, and the more unusual, the better.  So I was intrigued by a pair of messages in the Utility DXers Forum (https://www.udxf.nl/) email group in mid-August. Steve Handler posted a list of emergency station call signs from the state of Missouri that he found on the web in a 2014 emergency plan document. Then Jack Metcalfe responded that the last time he had checked, in early 2024, they ran a regularly scheduled net on 5140 kHz.

I immediately sent an email to Jack to find out more. He answered that on Wednesdays the Oklahoma State Secure Net had been doing a check-in at 0900 local time and that the Missouri State Secure Net followed at 0930 local time. Both of these started on 5140 kHz and then moved to 7477 kHz.

Going After the Secure Nets

I was spending my summer at an Airbnb in the north suburbs of Chicago. It wasn’t a good place to DX from, but I had already found a good listening site at the Old School Forest Preserve near Libertyville, Illinois. I began a series of regular Wednesday morning listening sessions. I knew that this wasn’t the best time of year for reception on lower frequencies, but I wanted to give it a try.

All I got from the Oklahoma net was a few very weak and unreadable signals. From the Missouri net, I got two loggings of the net control station, WNBE830, and of WQKX373 in St. Charles County. Two other Missouri stations did check in, but they were too weak for me to copy the call signs. They did say that the net is only on the first and third Wednesdays of the month. And there was nothing on 7477 kHz, so they apparently stick to 5140 kHz only now.

Recording of WNBE830 as heard on 5140 kHz at 1430 UTC on 03 September 2025, as heard in Old School Forest Preserve:

In mid-September, I left Chicago to visit my daughter in western Colorado. While I was planning my return drive back east along I-70, I realized that I would be spending the night of Tuesday, October 14, somewhere around Kansas City. And that meant I would be in the area the next morning for the third Wednesday of the month. I made plans for another mini DXpedition.

I found a hotel in the west suburbs and the next morning headed to a picnic shelter in nearby Wyandotte County Park for another remote DX session with my Airspy HF+ Discovery SDRs and PA0RDT mini whip. It was an excellent location. I logged five stations participating in the Oklahoma net. During the initial chitchat before the roll call, it was mentioned that some of the participants were at a conference. I might have gotten more stations if it hadn’t been for that. The Missouri net, on the other hand, did not make an appearance even though it was the third Wednesday.

Recording of roll call in the Oklahoma State Secure Net on 5140 kHz at 1407 UTC on October 15, 2025, as heard in Wyandotte County Park.

How To Log the Secure Nets

I didn’t hear as many new stations as I had hoped, but then I was listening in late summer and early autumn. There had already been several hours of daylight before the net started, which isn’t the best for propagation on the lower shortwave frequencies. The northern hemisphere is moving into winter, and as that happens, sunrise times will move later. And that will allow 5140 kHz to be heard at greater distances during the timeslot these nets are on. If you can hear WWV on 5 MHz in mid-morning in mid-winter at your location, you should have a chance at these.

The nets are on at 0900 and 0930 local (Central) time. When I was tuning in, that was 1400 and 1430 UTC, but when the US goes off of Daylight Savings Time on November 2nd, that changes to 1500 and 1530 UTC. From what one of the Oklahoma stations said, it sounded like the Oklahoma net is on every Wednesday. The Missouri net did say only first and third Wednesdays, but according to Jack Metcalfe, it was weekly some years ago. And for some reason, they weren’t on the third Wednesday of October.

I’m going to be spending the next four months traveling in Southeast Asia, so I won’t be DXing these again until I return to Chicago for a short visit in March. But hopefully some of you reading this in North America will try to hear these networks, too. Given that there is some question as to which Wednesdays these networks take place, I suggest setting up your SDR to make a spectrum recording including 5140 kHz every Wednesday at 1400/1500 UTC for the next few months. And let me know what you hear by dropping me a message to Don AT DonMooreDXer DOT com. If I get enough good information, I’ll put together an update to this article.

And that brings up something else. Do you know of any other regularly scheduled utility voice networks on shortwave like this one? Over twenty years ago, the US Army Corps of Engineers and the Federal Aviation Administration had weekly voice nets, but those are long gone.

Please post what you know in the comments or send me an email to the above address.

Oklahoma Secure Net Stations

On logs going back to 2005, these are the stations that Jack Metcalfe has heard participating in the net.

  • KNBV428 Santa Fe, NM
  • KNFG267 Oklahoma City, OK (normal net control)
  • KNGR728 Rush Springs, OK
  • WGY926 Oklahoma City, OK
  • WNBM839 Stillwater, OK
  • WNCH624 Department of Emergency Management, Tulsa, OK
  • WNPV700 Durant, OK
  • WNUW211 Oklahoma City, OK
  • WNUW212 Department of Emergency Management, Shawnee, OK
  • WNUW213 Department of Emergency Management, Altus, OK
  • WNUW215 Ponca City, OK
  • WNUW216 Oklahoma City, OK
  • WNUW217 Ardmore, OK
  • WPBV938 Beaver, OK (Beaver County EOC)
  • WPFY721, Oklahoma Emergency Management Agency EOC at the National Guard Armory, Seminole, OK
  • WQSY836 Byng, OK

My logs include three more stations either participating in or being unsuccessfully called.

  • WQYW833 Unknown location
  • WQZT582 Broken Arrow
  • WSHM692 Oklahoma City

Missouri Secure Net

Stations Jack Metcalfe has logged.

  • WNBE830 Ike Skelton Training Center, Jefferson City, MO (net control)
  • WNUW240 Missouri EMA, Jefferson City, MO
  • WQKE203 Missouri Dept of Transportation, Jefferson City, MO
  • WQOI753 Missouri Dept of Transportation, Hannibal, MO
  • WQOI754 Missouri Dept of Public Safety, Sikeston, MO
  • WQOJ557 Missouri State Police Radio Shop, Jefferson City, MO
  • WQOL350 Missouri Dept of Public Safety, Chesterfield, MO
  • WQOL459 Missouri Dept of Transportation, Lee’s Summit, MO

I heard one additional station:

  • WQKX373 St. Charles County, MO

Next listed are the stations Steve Handler found listed in the 2014 edition, Appendix 2, Section 2.22 of the 2014 Emergency Operations Plan. This plan was publicly posted by the City of Battlefield at the following URL:

https://core-docs.s3.us-east-1.amazonaws.com/documents/asset/uploaded_file/4319/CBM/3591786/complete_emergency_operations_plan.pdf

  • KNNT320 Boonville, MO
  • KNNT321 Greenwood, MO
  • WNUW238 Battlefieldd, MO
  • WNBE824 Jackson, MO
  • WNBE825 Rock Port, MO
  • WNBE826 Lee’s Summit, MO
  • WNBE827 Macon, MO
  • WNBE828 St. Louis, MO
  • WNBE829 Springfield, MO
  • WNBE830  Jefferson City, MO
  • WNBE831 Poplar Bluff, MO
  • WNBE832 St. Joseph, MO
  • WNBE833 Willow Springs, MO
  • WNBE834 Raytown, MO
  • WNBE835 St. Charles, MO
  • WNBE836 Hillsboro, MO
  • WNBE837 Neosho, MO
  • WNUS448 Union, MO 64084
  • WNWU734 St. Joseph, MO
  • WPCY526 Kansas City, MO
  • WPBN258 Kirkwood, MO
  • WNZJ459   Belton, MO
  • WPES740  Camdenton, MO
  • WPGA369 Fort Leonard Wood, MO
  • WPKX561 Hermann, MO

According to the same document, the net is authorized to use the following frequencies. Under 7477 kHz, there is a note that the station uses 1000 watts during the day and 250 watts at night.

2326, 2411, 2414, 2419, 2439, 2463, 5140, 5192, 7477, 7802, 7805, and 7935 kHz.

A big thanks to Jack Mecalfe for his assistance with this and to Steve Handler for making the initial post that drew my interest. 

Simple Wire Antenna: Giuseppe’s Mediumwave DXing Adventures from the Tyrrhenian Sea

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Many thanks to SWLing Post contributor, Giuseppe Morlè (IZ0GZW), who writes:

Dear Thomas and Friends of SWLing Post,

I am Giuseppe Morlè from Formia, Central Italy, on the Tyrrhenian Sea.

This time, I want to share a very simple antenna setup for listening to and attempting extreme DX on Medium Waves.

I first saw this antenna in several videos, and many DXers have used it during various expeditions.

For my setup, I used a 15-meter-long wire. At around 11 meters, I formed a small coil with 8 turns, then continued the wire for another 3 meters.

I began with some tests on my balcony by laying the wire flat along the ground for its entire length. I used my small Sony SRF-37V as a receiver. By placing the receiver within the coil of turns, I immediately noticed a significant difference compared to the built-in ferrite antenna.

In the early afternoon, I tuned into a Chinese language broadcast on 1377 kHz. You can watch a video of this experiment on my YouTube channel:

Encouraged by the excellent results, I decided to head to the tourist port of Caposele di Formia the next day in the early afternoon. I set up on the pier overlooking the sea. This time, I laid the wire in an eastward direction — towards the night, where the sun had already set, while it was still high for another two hours on my side.

Once again, I achieved amazing results.

I was able to hear the same Chinese station on 1377 kHz, but this time with much clearer audio than from my balcony, where electrical noise interfered. By the sea, the signal was clean and strong.

After a while, I tuned into VOA broadcasts from Thailand on 1575 and 1395 kHz, both with surprisingly good audio quality. You can see this second experiment here:

Sometimes, all it takes is a bit of wire and a small coil to create an excellent, ground-level antenna — in this case, oriented eastward.

I also tried using my loop cassette and a Tecsun PL-660 but couldn’t hear anything. Yet the little Sony SRF-37V proved itself to be a true “DX killer” on AM — truly impressive.

I even caught a segment of the VOA program “World Today,” discussing the Chinese economy and Southeast Asia.

As the sun set, the DX signals faded, making way for closer European and Asian broadcasters.

I will definitely return with a longer wire to see if this surprising setup can be improved even more.

A warm greeting to all the Friends who follow SWLing Post and to you, Dear Thomas.

73, Giuseppe IZ0GZW

More Reception Videos:

Bob’s Radio Corner: Pairing a Phone or Tablet with a Radio

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Pairing a Phone or Tablet with a Radio

By Bob Colegrove

The Internet is full of resources for radio listeners and hobbyists.  There are numerous examples of general information, frequency, and schedule lists.  There are also WebSDR sites, which allow you to compare reception experiences from around the world.  All of these can be accessed quickly and easily by having them loaded on your phone or tablet operating side-by-side with your radio and having Wi-Fi or cellular access.  We never had any of this when I was starting out.

I realize there are other ways to go about what I have described below, for example, merging station listings with SDR.  This posting is for folks like me who are SDR-challenged.  I listen to plain old radios.  My modern-day experience with newfangled technology has been limited to hitchhiking on WebSDR sites for the last few years.  It has served me well.

Ideally, I would like to generalize this topic to simply cover all phones and tablets.  In truth, my experience has been limited to an iPhone and Kindle Fire tablets.  They have worked very well as I shall explain.  Perhaps you have paired a different phone or tablet with your radio, in which case, feel free to share your experience.

The choice of a phone or tablet is yours.  Either works well.  Your decision will be affected by what you have available and what is easier to use.  If you intend to buy a new device and associate it with your radio, cost will be an additional factor.

A noteworthy device (the one I tend to favor) is a Kindle Fire.  Mainly, they are cheap.  The regular price of a 7-inch model is just under $60 and can often be purchased for less during Black Friday and Prime Day sales.  It is versatile, possessing all the usual functions except for cellular access.  Perhaps most importantly, it is virtually noise-free.  For a while I struggled using Internet sources on a laptop computer.  Even a good one located about 10 feet away from the radio antenna generates noise.  On the other hand, I have taken a 7-inch Kindle Fire in hand and placed it against the resonant coil of a loop antenna.  This abuse generated no more disturbance to the antenna than if it were a block of pinewood.  I have noticed some slight noise from the 11” Kindle when the antenna is exposed this way, but when that tablet is held at arm’s length from the antenna, all is well.  Recently, I have expanded this application to my iPhone and found its noise immunity matches that of the Kindle Fire 7.

Broadcast Schedules

The most useful Internet resources are the broadcast schedules.  These are the comprehensive frequency-time-station listings that tell us where and when to tune.  There are many good ones.  My favorites are the EiBi listing http://www.eibispace.de/, and Dan Ferguson’s https://groups.io/g/swskeds/topics.  For the latter you will need to request membership.  SWskeds merges EiBi, Aoki (https://www1.s2.starcat.ne.jp/ndxc), HFCC (https://new.hfcc.org/index.php), as well as other sources into a single list.

Processing

The EiBi listing comes as a CSV-formatted text file, which can be imported into a spreadsheet. I have done some processing using spreadsheet functions to produce a customized listing.  Processing the frequency-time-station lists is most conveniently done using a computer rather than the phone or tablet.   Processing includes selecting, arranging, or filtering the downloaded data tailored to your needs.  This might include adding a filterable column to indicate only stations that are on at the current time.  Some users might favor filtering by country or station. The heavy lifting processing is done automatically whenever a new listing is published by simply dropping the new file into the existing spreadsheet.  No, the functionality of a spreadsheet and ease of editing are not as good on a tablet as with the mouse and keyboard of a computer.  My processing on the computer includes measures to optimized the screen view to the most essential information thus minimizing the amount of scrolling on the tablet.

After the files are downloaded and processed, they can be loaded on the phone or tablet in a couple of different ways.  They can be directly transferred over a USB cable, or they can be transferred using a cloud server.  The USB cable-transfer method may be difficult on some devices, particularly iPhones.  The Kindle seems to be the more convenient device.  Being an obedient Microsoft customer, I can also transfer the files from my computer to OneDrive, then pick them up on the Kindle or iPhone using the OneDrive and Microsoft 365 apps which are available for both phone and tablet.

Examples

The screenshot below shows an EiBi example at 0014 UTC.  Although the “ON” column filter is set to show only transmissions currently “ON,” it had not been manually updated on the Kindle for a couple hours and thus includes listings from a previous time.  The EiBi database does not include transmitter power or beam information.  However, the identification of countries and transmitter sites is extensive.  These are determined by downloading and printing the README.TXT file on the EiBi site.

The SWSkeds listing is available in both CSV and Excel formats.  It contains several additional data fields, very importantly including transmitter power and beam direction when available.  For this list, I make the simple conversion of the existing Excel data range tab, “COMBINED” to a table so I can easily apply filters.  The screenshot below shows an example at 1750 UTC with the “ON” column filtered to “ON.”

Not to be left out, the complete medium wave broadcast station list for Region 2, the Americas, is easily downloadable at https://www.fcc.gov/media/radio/am-query.  The entire database is formidable and contains nearly 600 pages in a printable format.  Much of this bulk is due to the doubled size necessitated by giving both daytime and nighttime power separate entries for each station.  A number of marginally useful data columns can be eliminated in spreadsheet processing.  I have added formulas to calculate the azimuth heading and distance from my listening post (blanked out in the example below).

A variation of the downloadable file format is the direct-query site, SHORT.WAVE.INFO.  Here you can simply enter queries by station, language, frequency, or band, and produce listings which match your criteria.  Any listings which are currently on the air will be highlighted in red.

WebSDR

Finally, I would like to mention the WebSDR sites.  While not used explicitly for broadcast schedules, these sites are great for anyone wanting to compare how well they are receiving signals relative to what others are experiencing.  Granted, location and time of day are big factors that affect reception, but it is still useful to make these relative comparisons.

Home base is http://websdr.org/ which presents a catalog of many WebSDR sites by location.  At the bottom of the page is a world map which pinpoints the location of each site.  Most of these sites cater exclusively to hams; however, The University of Twente, Enschede, Netherlands (http://websdr.ewi.utwente.nl:8901/) covers 0.000 to 29.160 MHz unabridged.  The screenshot below shows the tablet/phone version of the U. of Twente site.  There are also two sites on the US East Coast which cover some non-hamband portions of the SW spectrum:  http://na5b.com:8901/ in the Washington, DC area and http://websdr.k3fef.com:8901/ in Milford, Pennsylvania.  The SHORT.WAVE.INFO and WebSDR sites can be directly accessed and queried over the tablet’s browser and a Wi-Fi or cellular connection.

Using the System

In my relentless pursuit to log the Nibi-Nibi Islands, I will load up one of the frequency-time-station listings and start my DX session.  This typically includes a scan of a particular band, checking signals I can receive against the lists.  If my interest peaks on a particular catch (usually a weak one), I will switch the tablet over to a WebSDR site to see how it is being received in Europe or along the East Coast of NA.

In summary, ready access to these Internet resources using a phone or tablet next to the radio has notable advantages:

  • The frequency-time-station listings provide quick, reliable signal identification in most cases.
  • The WebSDR sites confirm that my antennas are doing their job.

Am I done?  I hesitate to stop here.  The process of discovery is a marvelous human experience.  The foregoing are merely starting points.  Other applications might include sunrise-sunset calendars or maps or propagation forecasts.  There are certainly other ways to do all this depending on your druthers.  I know I am erring by omission and neglecting many other good resources.  Let’s hear about yours.

Carlos Visits the Studios of UFRGS Radio

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Visiting the studios of the University Radio of Rio Grande do Sul, Porto Alegre, Brazil

by Carlos Latuff

On the morning of Thursday, February 27, 2025, I visited the studios of the radio station of the Federal University of Rio Grande do Sul (UFRGS in Portuguese) in Porto Alegre, Brazil. Founded in 1950, it’s the first broadcaster in Brazil operated by a university, which currently broadcasts on medium wave (AM) and over the Internet (streaming): https://www.ufrgs.br/radio/ao-vivo/

Headquarters of the UFRGS radio studios in Porto Alegre, Brazil.

The programming focuses mainly on classical music, but it also has programs of other musical styles. Despite the technical, bureaucratic and financial difficulties (a typical scenario of state radio stations in Brazil), the UFRGS Radio has been operating thanks to the efforts of its team. One of the things that catches my attention at this station is the news bulletin, broadcast on weekdays at 12:00 p.m. local time, presented by Mrs. Claudia Rocca.

News bulletin from UFRGS Radio, voiced by Mrs. Cláudia Rocca.

The bulletin is 10 minutes long and brings local, national and international news, some of which are suitable for my already traditional illustrated radio listening.

According to the station’s director, Mr. Claudio Roberto Dornelles Remião, the UFRGS radio station, like most AM radio stations in Brazil, will migrate to FM, but there’s still no set deadline.

What’s in the Box? Bob Colegrove Investigates the Forgotten Extras of Your Radio

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What’s in the Box?

Itemized by Bob Colegrove

Not one to throw anything away, I tend to save ‘the box it came in’ for many new purchases.  The other day I decided to organize all my radio boxes.  Besides the radios themselves, they usually contain a selection of “goodies,” which can include, cases, power adapters, USB cables, batteries, earbuds, antennas, manuals, and so forth.

I generally do not use much that is included in the box.  Over time, however, some of the paraphernalia has gotten scattered around, and my recent effort was intended to corral and sort the accessories.  My experience is itemized below.

Cases

The cases are invariably the largest accessories in the box.  These are sometimes firm, faux-leather enclosures with a zipper around the edges.  I prefer the soft, pliable pouches which seem to function more easily and take up less space.

The Sony ICF-2010 and -2001D did not include cases.  To give the radio some protection during travel and storage, I fabricated a ‘sock’ out of an old bath towel and some hot glue.  The so-covered radio was then inserted into a travel bag along with earphones and anything else I needed.  This worked very well over the years; so well that I extended the concept for some of my smaller radios, which came with cases.

Homemade socks for a PL-880 and ICF-2010 could even be color-coordinated with the rest of your gear.

Power Adapters and Batteries

The following is not intended as the definitive treatise on power adapters and batteries.  Enough guidance has been provided by others.  The takeaway here is that, if you ever refer to the radio’s manual, this is the occasion to do so.  Ensure you know how your radio was designed and the proper way to power it.

In my collection of portable radios there are several combinations of power adapters and batteries.

  • Some radios came with power adapters and others didn’t.
  • Some radios came with batteries and others didn’t.
  • Some just came with USB charging cords.
  • Some were intended for both chargeable and nonchargeable batteries.  Others were intended only for alkaline, nonchargeable batteries, in which case the power adapter disconnects the battery from the circuit and is only used to power the radio.

An adapter might be used to power the radio, recharge batteries, or both.  It’s hard to believe in these days of switching power adapters that an adapter could ever be used to listen to AM radio, but that was the case with the Sony ICF-2010/2001D and Grundig Satellit 800.  These radios came with a more costly transformer adapter which produced very little discernable noise.  Manufactured in pre-rechargeable alkaline days; however, the adapter did not provide a battery charge function.  Over the years, I have mostly used these radios in-house.  They tend to be D-battery-hungry, and so they are usually powered via the adapters.

When Sony got around to producing the ICF-SW7600GR, they took a different approach.  They simply figured it was a small, portable radio, and would mainly be used with batteries.  So, there is a power port for an optional 6-volt adapter, but no included adapter.

The OEM batteries aren’t always the best, so I have an extra supply of rechargeable NiMH and lithium batteries which I cycle through my radios, and the originals are simply included in the rotation.  The NiMH batteries that came with the Tecsun PL-600, -660, and -680 only had 1000 ma capacity and tended to self-discharge quickly after a year or two of use.  However, they got you started.

I have always wondered about using NiMH batteries in radios intended only for alkaline batteries – mainly older ones.  There is a 20-percent reduction in voltage.  How does this affect the performance of the radio?  I suppose this can only be answered on a case-by-case basis.  As an example, I have used NiMH batteries in the Sony ICF-SW7600GR from the very beginning with no apparent degradation.  However, on the XHDATA D-219 and D-220, the difference is quite noticeable.  For some radios, the battery type is switchable, and one must be careful not to connect a power adapter to recharge alkaline batteries.

Earbuds

If you’re serious about radio, you have a good set of earbuds or headphones.  I would venture to say the supplied earbuds for each of my radios are still in the box in their original wrapping.  I don’t get along well with earbuds.  They are hard to install in what apparently are my constricted ear canals and are always falling out.  Several years ago I purchased a set of quality over-the-ear headphones.  Not the most convenient for travel perhaps, but great for reproducing sound and mitigating outside noise.  Grundig went so far as to include a set of over-the-ear headphones with the Satellit 800.

Antennas

Most new portables come with 20- to 25-ft long wire external antennas having 3.5-mm plugs for connection to the external antenna jack.  Sometimes a plastic ‘clothespin’ is attached to the remote end of the wire for mounting.  For convenience, some of these wires are contained in a tape-measure-style spool.  These antennas are quite useful for the non-tinker and traveler, as they provide a means to extend the range, particularly on shortwave.

The C. Crane wire terminal antenna adapter, included with the Skywave SSB 2, is a boon to anyone without a soldering iron or otherwise not inclined to use one.  Other manufacturers take note.  A #2 Phillips screwdriver, and knife to strip the wire insulation are all you need for extensive antenna experimentation.

Source:  C. Crane Skywave SSB 2 Instruction Manual, p. 30.

Sony packed not one, but two 3.5-mm external antenna plugs with each ICF-2010/2001D.  The concept was the same as the C. Crane wire terminal antenna adapter.  These had wire pigtails ending in screw terminals for an antenna and ground wire of your choice.

External antenna adapter (1 of 2) packed with the Sony ICF-2010 and -2001D

A caution here.  The RF amplifier for LW, MW, and SW on the 2010 is an unprotected FET (Q303), which is notorious for failing due to electrostatic discharge from an external antenna.  Early on, your author was twice bitten by this snake.  There may be other radios that suffer from this vulnerability.

Straps

The strap is arguably the least useful accessory included with any portable radio.  The Sony ICF-2010/2001D came with a very attractive blue over-the-shoulder web strap, which has become something of an “item” among collectors.  Mine have been bound up in their original wrapping and stored away for 40-plus years, and might yield the cost of a new portable radio should I ever decide to auction them on the Internet.  I have never used them on either of my 2010s simply because I can envision the priceless radio dangling pendulously at the end of the strap waiting to meet disaster through contact with an immovable door jam.

The same goes for smaller radios which almost always include an obligatory wrist strap.  Perhaps these should not be classified as accessories, as they are permanently attached to the radio.  I avoid using them for the same reason as sited for the 2010s.  Besides, they just get in the way.  These straps are usually anchored inside the case, but I can’t bear to cut them off; so, I have just lived with them.  In the few cases where I have opened the case, I have omitted reinstalling them.  Instead of having a strap, how about a collapsible “lunchbox” handle?  I can even envision one of these being developed into a dual-purpose handle/antenna.

Manuals

Don’t forget the manual.  We’ve gotten away from manuals.  People don’t use them, and they are a manufacturing expense.  Besides, you can find your answer on the Internet.

As a retired technical writer, however, I have a strong respect for a well-crafted technical manual.  Besides actually using them, I unconsciously evaluate them.  Unfortunately, most are written as an afterthought – an attempt to forestall customer enquiries.  “Read the manual.”  The problem is compounded by radios intended for a worldwide market, wherein the manuals are authored by writers who labor under the handicap of having English, French, Spanish, German, etc. as a second language.

There are also situations where the printing is too small or the fanfolds too inconvenient.  My standard practice is to download an electronic copy of each manual, print it out in 8 ½” × 11” format, and put it in a comb or 3-ring binder.  This is easier on aging eyes, and more suitable for adding my own notes.

…and so forth

Besides the common accessories described above, some unique items have been included over the years.  For example, Tecsun has packaged very nice 20-inch by 30-inch charts with some models.  One side contains a world map showing amateur call areas.  The other side is an enlargement of the radio with each button or control function described.

Going back a few years, Sony included a slick publication called the Wave Handbook with some of their radios.  These had convenient station vs. time charts for world band radio.  The charts were like those published in frequency vs. time format in Passport to Worldband Radio.  The booklets were published in several editions over the years, but obviously, these were time sensitive and became outdated rather quickly.  Still, they could pique the interest of folks new to SWLing.

Packaging

Finally, there is the box the radio came in and any accompanying wrapping.  The packrat DNA in me usually demands that I keep all this.  It can speed up the sale or otherwise increase the value of the radio, if you ever decide to sell it.

Which radio accessories do you use?

Would you like an option to buy the radio without any accessories?