Tag Archives: Shortwave Portables

Mike’s RadioShack Model 2000669 modification to prevent station memory loss

RS-ShortwaveRadioSWLing Post contributor, Mike (W5RST), writes:

This is a follow-up to my mini-review of the new Radio Shack model 2000669 receiver.

Overall, I continue to be quite happy with this receiver, however, I think the loss of memories and time when replacing batteries is annoying.

So, I did a simple mod to the radio to help prevent having to re-program everything after installing new batteries.

I found that there was enough space within the case to tack a 220 µF 6.3 V electrolytic capacitor across the pads on the PC board where the battery leads are attached [see the photo below]. Adding a series resistor to limit current flow might be better, but this simple change seems to be OK.

Click to enlarge

Click to enlarge

The mod won’t prevent long-term memory loss, but it will keep enough voltage on the circuit for a quick battery change (especially if you change one battery at a time). The radio is not actually altered, and the mod can be easily removed if desired.

Close-up of added capacitor.

Close-up of added capacitor.

Many thanks for creating and documenting this simple mod, Mike!

On a side note, I remember when RadioShack used to pride themselves on having a full line of products that could maintain memory if batteries were removed or in case of power outage. RadioShack badged VCRs, receivers, radios and clocks all had this feature in the 1990s, at least.

Again, Mike, many thanks!

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The SWLing Post 2014-2015 Shortwave Radio Buyer’s Guide

RadiosShootOut-SonyTecsunSangean

The following article originally appeared in the November 2014 issue of The Spectrum Monitor magazine.


Although many large government shortwave broadcasters are departing the shortwave radio scene, there’s no shortage of great products being introduced to it. Indeed, growth in the portable and SDR (software defined radio) markets is reasonably rapid.  This suggests, perhaps, a new kind of future for shortwave.

The following is a basic, easy-to-follow buyer’s guide to some of the best receivers on the market. This guide is, by no means, comprehensive; rather it’s a selection of rigs I know or own, thus have tested.

Compact/Travel portables

If your budget is tight, or if you’re looking for a radio that could easily slip into your glove compartment, backpack, carry-on, or even jacket pocket, you need to look at an compact shortwave radio. Typically, there is a performance compromise with compact radios: they don’t typically have the sensitivity, like their more expensive cousins; they have a more limited frequency range; and they don’t detect single-sideband signals. Nonetheless, the ones listed here are fine performers for their size and price. Entries are listed in alphabetical order.

ccradio-swpCrane CCRadio-SWP

The CC Radio SWP has been on the market for many years and has become a classic portable. The layout and design are very simple, the display clear, with easily-read icons and intuitive controls. The tuning knob on the right side is for fine tuning–no muting or chugging between frequencies, either. Shortwave and MW sensitivity are better than one might expect for a radio this size; I often find myself comparing it to much pricier portables. But most significantly, this radio offers the longest battery life of any radio I own: almost 70 hours on 2 AA cells!

The CC Radio SWP is available from C.Crane for $55.00 US. You can also purchase the CC Radio SWP from Universal Radio ($44.95) and Amazon.com.

Note: The CC Radio SWP may soon be replaced by the new CC Skywave which has just started shipping at time of posting.

KA1103Kaito KA1103 or Degen DE1103

The Kaito KA1103 packs a lot of bang-for-your-buck if you’re looking for an inexpensive, ultra-portable entry into SWLing. Like the CC Radio SWP, the KA1103 (a.k.a. Degen DE1103) has enjoyed a long market life. The KA1103 is full-featured and one of the only sub-$100 radios with SSB mode. One interesting design feature of the KA1103 is its large Digital/Analog frequency display: the LCD screen features the frequency display in digits, but also sports a working digital representation of an analog frequency dial. As you tune up and down the band–with, yes, a tuning knob–the LCD needle moves along the display as it would on an analog radio dial. While I believe radio ergonomics could be improved, the KA1103 is still a great bargain.

The KA1103 is available at Universal Radio for $79.98 and Amazon.com for $79.99. Click here to search eBay for the Degen DE1103.

Tecsun PL-310ETTecsun PL-310ET

The Tecsun PL-310ET is an updated version of the acclaimed PL-310, a mini-legend in the world of portable radio, offering exceptional value and high-performance in a small package. The PL-310ET is fueled by a SiLabs DSP (Digital Signal Processing) chip that gives this ultra-portable excellent sensitivity and selectivity. The PL-310 has been a favorite amongst ultra-light Dxers, as sensitivity and selectivity are  exceptional for the price. The new “ET” version of the PL-310 sports ETM tuning; a feature which allows you to scan the entire band and automatically store all strong stations to temporary memory locations. I believe the updated PL-310ET also has better AGC for weak signal DXing than its predecessor. Another bonus is that the PL-310ET sports an external antenna jack for shortwave and FM reception.

The Tecsun PL-310ET is largely available from Hong Kong-based sellers on eBay (http://ebay.to/1seZP3h) as well as on Amazon.com.

Tecsun-PL-380Tecsun PL-380

The Tecsun PL-380 is my favorite radio under $60. Much like its cousin, the PL-310ET (above), the PL-380 has a DSP (Digital Signal Processing) chip that gives this ultra-portable excellent sensitivity and selectivity. For three years, I have traveled extensively with the PL-380 in tow, and I’m constantly amazed by this radio’s excellent audio and reception across the bands.

The Tecsun PL-380 is available from Universal Radio for $59.95 and from Amazon.com for $54.99. Click here to search eBay for the PL-380.

Tecsun offers a number of compact portables, based on a similar DSP chip as the PL-380, but with built-in stereo speakers. Check out the Tecsun PL-390, PL-398BT, and PL-398MP, too.

Full-Featured Portables

In the portables market, I believe you get the most value and quality in the $90-250 price class. Most beginners and seasoned SWLs prefer a radio that includes everything necessary to get on the air immediately; all of these radios provide just that. Straight out of the box, you’ll have everything you need to listen to shortwave bands. All of these recommended radios are designed to pick up major shortwave broadcasters with ease, and offer the following features: good frequency coverage; circuitry that helps in the detection of weaker stations; and the ability to receive single-sideband (with the exception of the CCRadio-SW, see below).

ccradio-swCrane CCRadio-SW

If you’re not as concerned about portability, the C.Crane CCRadio-SW is an excellent broadcast receiver. Think of the CCRadio-SW as a larger portable or tabletop radio (11.25″ x 7.25″ x 3.5″). What makes this radio stand out from its peers? Exceptional audio fidelity. The large built-in speaker has separate treble and bass controls and reminds me how important audio quality is while listening to a faint signal. This radio’s audio will fill a large room. Shortwave sensitivity is very good. Medium wave (AM broadcast) reception is excellent. Negatives? No direct keypad for frequency entry, and the SW also lacks a native SSB mode (a rare missing feature in this price class). With that said, it does have impressive array of external connections, including an IF-Out connection, which (with an IF converter and some free software) will allow you to interpret SSB and an array of digital signals, including DRM (Digital Radio Mondiale). What really strikes me about the CCRadio-SW is its sheer ease of use.  Its design is simple, ergonomic, and highly effective. I’ve often recommended the CCRadio-SW to listeners who want simplicity of use and robust audio.

The CCRadio-SW is available for $149.95 at C.Cranes’ website, $129.95 from Universal Radio and is also available on Amazon.com. Click here to check eBay for used models.

Radios with a similar form-factor include the Grundig S450DLX and the new Eton Field.

ATS-909XSangean ATS-909X

At $249.95, the Sangean ATS-909X is one of the priciest full-featured portables on the market. The 909X sports a large alpha-numeric display, tactile buttons, and a solid build quality. I also believe the 909X has a one of the better internal speakers and audio fidelity amongst portables. Negatives? Surprisingly, the 909X lacks synchronous detection, a tool most other portables have in this price range. Additionally, in my recent shortwave portable shoot-out, I gave the Sangean low marks for sensitivity; this review was based upon use of the built-in telescopic antenna. With an external antenna, on the other hand, the 909X performs admirably. If you’re looking for a quality portable with a front-end robust enough to be attached to a larger external antenna, the 909X may very well be your radio.

The Sangean ATS-909X is available at Universal Radio for $249.95 and Amazon.com for $219.99. Click here to search for used ATS-909Xs on eBay.

Sangean still has several models of portables available.  Check out the Sangean ATS-404 and ATS-505P.

Sony7600GRSony ICF-SW7600GR

For performance, you’ll find that the Sony ICF-SW7600GR is top of its class among full-featured portables. Two of its outstanding features is a solid synchronous selectable sideband (a feature which helps to reduce fading distortion and adjacent-channel interference) and stable AGC circuit. In fact, the ICF-7600GR was chosen as a favorite in a blind audio test on the SWLing Post. Indeed, my only criticism of the ‘7600GR is that it lacks a tuning wheel; instead, you’re forced to use tuning buttons on the front face of the radio.

The Sony ICF-SW7600GR is available at Universal Radio for about $150.00 and at Amazon.com for $130-150.00. Click here to search eBay for a used ICF-SW7600GR.

KX3-Helper-Tecsun-PL-600Tecsun PL-600

The Tecsun PL-600 is the value leader among the full-featured portables in this list. It can be found at a wide array of retailers, such as Universal Radio, Amazon and eBay. Price ranges from about $65 to $90. I’ve often recommended the PL-600 as a first full-featured radio for the budding SWL, and for good reason: the PL-600 has great sensitivity, selectivity, and even has capable single-sideband reception. The PL-600 does a surprisingly good job of holding its own against the other contenders in this list. Negatives? Like all sub-$100 portables, the PL-600 lacks synchronous detection (and if this is a deal-killer for you, check out the PL-660). Additionally, the PL-600 is not well suited for large external antennas; but it does work quite well with its own antenna. In a nutshell: if you’re not willing to spend over the $100 mark, the PL-600 is a safe bet.

The Tecsun PL-600 is available at Universal Radio for $89.95. Click here to search eBay for new and used PL-600s.

PL-660Tecsun PL-660

The Tecsun PL-660 is one of the best selling portable shortwave radios currently on the market–and for good reason. This rig has a full compliment of features and is quite easy to operate. The sync detector (selectable USB/LSB) is currently one of the best in the sub $150 US price range. Sensitivity and selectivity are both excellent; indeed, I consider it to have the most sensitive receiver among the portables listed here (and so. With the introduction of the Tecsun PL-880 on the market, the PL-660 has also become more affordable and can be found at or near the $100-120 price point with shipping. What a bargain!

The Tecsun PL-660 is available at Universal Radio for $109.95 and on Amazon.com (prices vary). Click here to search fro a new or used PL-660 on eBay.

Tecsun PL-880PL-880 (1)

The Tecsun PL-880 was introduced to the market one year ago (November 2013), and while the introduction was a bit bumpy (feature variation based on differing firmware versions), it has recovered and found quite a good following. While the PL-880 does not rank as highly as the PL-660 or ICF-SW7600GR in terms of sensitivity (see review TSM June 2013) it does have compensating factors.  For one thing, the PL-880 has the best audio fidelity from its internal speaker among the radios listed here. It’s also the most feature rich, boasting the most filter selections and a growing number of “hidden” features (http://wp.me/pn3uc-2tl). I also love the build quality, ergonomics, and tuning options; indeed, the PL-880 even has a dedicated fine tuning control. Negatives? Though the PL-880 has an undocumented sync detection among its “hidden” features, I find its sync lock quite feeble, compromising audio fidelity a bit too much. If you’re looking for a small portable that will fill a room with rich audio–whether you’re listening to the BBC, a classical concert, or just two ham radio operators chatting on 40 meters– look no further than the PL-880.

The Tecsun PL-880 is available at Universal Radio for $159.95 and on Amazon for $159.99. The Tecsun PL-880 is also available from Hong Kong-based sellers on eBay.

New Eton portables now shipping

Eton-SatellitAt time of publishing, Eton Corp–the North American distributor of Grundig–has four updated models of shortwave portables new to the market. All are updated versions of recently retired Grundig models:

If history is a guide, I expect all of these radios to prove worthy of the 2016 Shortwave Radio Buyer’s Guide. Indeed, preliminary reviews of the Field have been most favorable. Barring schedule changes, all models should be available in time for the 2014 holiday season…Stay tuned.

Tabletop receivers

While tabletop receivers have started to decline with the advent of SDRs, there are many listeners who still prefer a simple, dedicated, stand-alone high-performance receiver with a good tuning knob and clear display, which is to say, a tabletop receiver. Tabletops are designed to perform best with a resonant external antenna.

AlincoDXR8TFrontFaceAlinco DX-R8T

I reviewed the Alinco DX-R8T in 2011 a few months after it was introduced. I was favorably impressed with the DX-R8T. So much so, I purchased one after the review. It has excellent selectivity and sensitivity, a large display and tuning knob, a detachable faceplate (if your desktop space is limited), and a decent built-in speaker. What’s more, the DX-R8T has an SDR mode that allows you to hook up the receiver to your PC to see a spectrum display, and with an optional accessory cable, control its rig functions and tuning. The DX-R8T requires a regulated 12-volt power supply (not included). Cons? The DX-R8T lacks a selectable synchronous detector–a feature I enjoy using to combat adjacent signal interference.

The Alinco DX-R8T is available at Universal Radio for $449.95. Click here to search eBay for the Alinco DX-R8T.

Icom-R-75Icom R-75

Various versions of the Icom R75 have been on the market for well over a decade.  This receiver stands the test of time because it’s a full-featured tabletop with attributes like twin passband controls, a two-level pre amp, separate AF/RF gain, adjustable AGC, an alpha numeric display, a direct frequency entry keypad, not to mention a logical, ergonomic layout for all controls.  Amateur Radio operators, pirate radio listeners, as well as utility broadcast listeners will all appreciate the R75’s performance in SSB mode. Cons? The current base version of the R75 lacks synchronous detection, though some models in the past have had this option.

The Icom R75 is available at Universal Radio for $669.95. Click here to search eBay for the R75.

SDRs/IF Receivers

If you’re searching for maximum performance for the price, software-defined radios (SDRs) and IF receivers are hard to beat. These small “black box” radios require a computer to unlock their performance; none of these are stand-alone. But while I’ve never been a fan of combining my PC with radio listening, once I starting using an SDR, I never turned back.  Now, 90% of the time that I’m on the air, it’s with an SDR. They’re simply incredible.

The following selection of SDRs–and IF receivers–are all available for $1,000 or less.

BonitoRadioJetDaytonBonito RadioJet IF-Receiver 1102S

The Bonito RadioJet is included in this group because it is very similar to an SDR, but strictly speaking, it’s an IF receiver. Like an SDR, it requires a PC for operation. But while the RadioJet’s spectrum bandwidth is more limited than the SDRs that follow, it has advantages over the others.  For one, the RadioJet is more akin to a PC-controlled radio–most of the hard work is done in the receiver itself, not your computer–-so even older model Windows PCs, tablets and netbooks can run the  RadioJet application with ease. The RadioJet is great for travelers since it requires no external power supply: it derives its power from your computer, from the same USB cable used for data. The RadioJet is an excellent receiver and has a very low noise floor. If you like listening to DRM, you’ll be impressed with its native ability to decode the mode. Click here to read my comprehensive review of the RadioJet.

The Bonito RadioJet 1102S is available at Universal Radio for $649.95. The RadioJet can also be purchased directly from Bonito in Germany.

Elad-FDM-S2-CoffeeElad FDM-S2

If you’ve read my Elad FDM-S2 review (coming soon!) you’ll know that this little SDR packs a powerful punch for the price. Indeed, I would venture to say that the FDM-S2 offers the best value among the SDRs listed here. Its performance is uncompromising, comparing favorably to receivers $300-400 more in price. The S2 also provides native DRM decoding.  In short, the S2 makes for a fine DRM receiver.

Any negatives with this rig? Some users have reported diminished receiver performance in the presence of high-powered AM stations (fortunately, not an issue in the rural area where I live). Additionally, the Elad application has a greater learning curve than, say, the Perseus or the Excalibur (below). Still, I like the S2 so much that even though I already own a benchmark SDR, I’m planning to purchase the S2 after review.

The Elad FDM-S2 is available at Elad USA for $580.00.

PerseusMicrotelecom Perseus

If you’re looking for a benchmark SDR, it’s hard to overlook the venerable Microtelecom Perseus. Though it’s been on the market for many years now, the receiver architecture holds its own and is as robust as they come. Selectivity and sensitivity are absolutely superb: no matter the mode or band. Another benefit of the Perseus is that users can network their receivers with relative ease, sharing them with other Perseus users. Negatives? The Perseus price point still tops the charts at $1000. And while the supplied application works quite well, it lacks features found in other SDR apps, and the window cannot be resized (though numerous customer requests have been made). Still, the Perseus is likely to remain a DXer’s receiver of choice for years to come.

The Microtelecom Perseus is available at Universal Radio for $999.95. Click here to search eBay for a used Perseus.

WinRadio Excalibur

I have owned the WinRadio Excalibur since 2012, and it has become my primary home receiver. I have directly compared the Excalibur to the Microtelecom Perseus and the Elad FDM-S2 (above); any receiver performance differences are minor. As a radio broadcast archivist, I find the Excalibur to be the best receiver suited to capturing broadcasts, as it’s the only one in this group that can record up to 2 MHz of radio spectrum (and allow you to play back this recording later); up to three broadcasts can be captured simultaneously within that 2 MHz window. Negatives? The Excalibur application only works on Windows PCs. Additionally, it requires a dedicated 12V power supply, thus is less convenient than the RadioJet or FDM-S2 for travel and outdoor listening. Read my full review of the Excalibur by clicking here.

The WinRadio Excalibur is available directly from WinRadio for $945.95. Click here to search eBay for a used Excalibur.

Hybrid Stand-Alone SDR/Tabletops

The CommRadio CR-1

CommRadio CR-1a

The CommRadio CR-1a could be classed as either an SDR or a stand-alone tabletop receiver, as it fits both profiles. Furthermore, the CR-1a is as portable as nearly any of the portable radios mentioned above. In short, I really dig this radio! It’s beautifully engineered and mil-spec rugged; performance-wise, it’s hard to beat. Receiver sensitivity and selectivity are superb. The best part? The CR-1a has an optional internal battery that will power it for hours on a single charge. With antenna and fully-charged CR-1a, you will enjoy hours of outdoor listening while traveling [check out my recent travel review]. If you’re on the fence about getting an SDR or tabletop radio, grab the CR-1a; at $599.95, it’s a lot of kit for your investment. Click here to read my comprehensive review of the CR-1.

The CommRadio CR-1a is available from Universal Radio for $599.95 and directly from CommRadio for $599.99. Click here to search eBay for a used Comm Radio CR-1 or CR-1a.

The Shortwave Radio Index

If you would like to view a comprehensive list of all shortwave radios currently on the market, check out the Shortwave Radio Index (http://swling.com/db).

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A look inside the RadioShack Model 2000669 shortwave radio

RS SW Portable small (1)-001

After submitting his mini review of the RS Model 2000669, SWLing Post reader, Mike, writes:

Attached [above] is an annotated photo of the RS radio’s PC board.

As you’ll see, there is a mystery “blob” chip, which probably handles the DSP functions.

The TDA2922 is an audio amplifier, but I couldn’t find data sheets for the other ICs. Maybe some of your readers can help.

There is one pad prepared for an additional chip, so additional functions might be possible. By the way, I discovered that if you remove the batteries, the memories and clock have to be reset; which is unfortunate. Overall, for $30, I’m quite happy.

Mike, thanks so much for cracking open your brand new radio so that we can take a look inside. The “blob” chip does most likely handle DSP and I bet it’s not a SiLabs chip since (I believe) they are typically labeled. Perhaps readers can chime in with additional information?

Update: I stand corrected. K.U. comments:

“The radio has an Si4734:

Line 1: 3460 = Si4734, firmvare rev. 6.0
Line 2: D296 = Revision D die, tracking code 296
Line 3: 401 = Last significant digit of the year, workweek
Reference: https://www.silabs.com/Support%20Documents/TechnicalDocs/Si4730-31-34-35-D60.pdf (See page 37)”

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Field Recording with the Tecsun PL-380 and Transcend MP330

PL-380SWLing Post reader, London Shortwave, shared photos of his portable recording kit on Twitter yesterday. It consists of a Tecsun PL-380, Transcend MP330, in ear headphones, and a simple clip-on antenna (supplied with the PL-380). He recorded Radio New Zealand International with this gear.

Transcend-MP330

I love the compact form factor of the Transcend MP330–ideal for field recording. I’m curious if there are other high-capacity USB memory/recording sticks on the market.

MacBook

The PL-380 is a superb ultralight radio; my favorite small travel radio, in fact. The PL-380 can be found for about $42 US shipped via Amazon; an impressive value.

Many thanks to London Shortwave for sharing images of his ultralight DXing & recording kit!

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Frugal SWLing: Investing little, but getting a lot out of your radio

This article originally appeared in the April 2014 issue of The Spectrum Monitor Magazine.


RadioDialLet’s face it: SWLers and amateur radio operators are some of the most frugal hobbyists out there.  But the good news is that radio is a hobby that favors the frugal.  There are many practical and time-tested ways to make radio listening fun and effective–such as improving your shortwave radio reception–that are absolutely free, or that cost very little.

And how do I know this?  Among the frugal, I’m the most frugal SWLer I know! Yet there’s a method to my frugal madness:  because I simply can’t afford to waste hard-earned radio money on gadgets and accessories that are ineffective, I count my pennies in order to make quality purchases with longevity in mind.  Meanwhile, I track down ways to keep my hobby cost-effective.

I’ve gathered here some of my favorite frugal tips and quality purchase suggestions here. So, without further delay, let’s start SWLing–and saving money.

1. Check your shack/home for RFI. Cost: Free

Checking your shack for RFI is vitally important, a procedure every radio listener or operator should undertake.

The truth is, very few of us regularly experience ideal conditions for HF or AM radio listening. Devices like plasma TVs, laptop power supplies, and the ubiquitous AC adapter inject distracting noise into our otherwise peaceful environs, disrupting our hobby. This noise is known as RFI (Radio Frequency Interference).

These "Wall Wart" type adapters can create a lot of RFI

These “wall wart” type adapters can create a lot of RFI

A number of times, I’ve received a message from one of my readers on the SWLing Post claiming that their new shortwave radio can “only” hear strong, blowtorch stations. My simple advice? Put batteries in your radio, turn it on to an unoccupied frequency in your favorite shortwave meter band, go to your circuit breaker box, and turn off everything in your house. (Warning: Do warn your housemates beforehand, to avoid any loud protestation! And do reset your clocks and check your refrigerator/freezer after this test.)

Did the noise level on your radio decrease? If the decrease coincided with the power cut, then one or more electronic devices in your house are generating RFI. RFI often sounds like static–very loud static–and is often so wide in bandwidth that it can cover several megahertz. RFI can overwhelm your portable radio and basically “deafen” it to anything but the loudest stations that break through the elevated noise floor.

Next comes the process of elimination: systematically turn on circuit breakers until you hear the noise return. If you’re fortunate enough to have accurately-labeled circuit breakers, you will at least know what area in your house holds the infamous disruptive device. Here’s a short list of the usual RFI culprits:

  • the ubiquitous AC adapter (aka, “wall wart”)
  • laptop power supplies
  • flat screen TVs: especially Plasma TVs
  • heating devices like electric blankets
  • external hard drives
  • lamp dimmers
  • touch lamps

Good luck tracking it down!  Chasing RFI can be complex.  Check out this list of RFI resources on the ARRL website for methods and ideas to cope with RFI.

2. Take your radio outside. Cost: Free

ParkListeningIf you live in a condo, high-rise, or high-density neighborhood, my first suggestion may be of little use to you. In this case, your neighbor(s) may be causing RFI; turning off your own power may have little to no effect.  Fortunately, there’s an easy–albeit modestly inconvenient–way to deal with neighborhood RFI. Leave the neighborhood! No, not permanently; just for a fun afternoon outing (with radio, of course).

If you live in a city, grab your radio, and head for a park or other area with wide open space and no buildings. Listeners who live in urban areas frequently enjoy radio listening via headphones on a park bench; some even have a favorite bench for their fair-weather pastime.

The benefits in this case are two-fold: firstly, you’re removing yourself from the vicinity of RFI, but secondly–and the icing on the cake–is that you’re taking your radio, and its antenna, outside.  Antennas always function better outside. Walls and even windows attenuate HF signals.  Plus, outdoor settings nearly always equal fun.

Want some inspiration? Check out how this SWL plays radio in central London.

By the way, if you have no local parks to which you can escape, consider taking your radio in the car and driving to a national park. Better yet, combine camping and SWLing.  I like to do this, although I don’t have an RFI problem where I currently live.

3. Make a simple wire antenna. Cost: Free (or, at most, $10-15)

Most shortwave portables radios on the market today have a telescopic whip antenna that will suffice for casual listening. But often you can increase the antenna gain by simply adding more length in the form of a simple thin wire. Keep in mind that many radios actually ship with a clip-on antenna wire. Check your original box and make sure you haven’t overlooked it, as it’s fairly easy to do.

An alligator clip offers serious bang-for buck--especially if you already have the parts lying around

An alligator clip offers serious bang-for buck–especially if you already have the parts lying around

If you didn’t receive a factory-supplied clip-on antenna, no worries!  They’re a breeze to make and quite cheap: indeed, if you have a junk box of electronics parts like so many hobbyists I know, you may already have what you need. Simply obtain a 20 foot length of jacketed (insulated) wire–gauge is not important, just something thin enough that you can easily roll up to transport. Next, strip ¼ inch of insulation off the end of the wire. Solder and/or crimp an alligator clip to the end of the wire, making sure you have a solid, stable connection.

Now, stretch out this wire and attach it to your antenna.  You will most likely find that this improves antenna gain. The effectiveness of the wire varies with the receiver. When I’ve made clip antennas in the past, I’ve simply made them longer than I thought I might need, then later cut it off at the optimum length based upon signal strength.

Two caveats:

  1. If you live in an RFI-heavy environment, adding a wire antenna at home may only increase your noise level (after all, it will make the radio better at “hearing” the noise).
  2. Some receivers are susceptible to overloading and electrostatic discharge (the Tecsun PL-600, Grundig G5 and G3 come to mind). To be on the safe side, do not attach any wire to your portable that is in excess of twenty feet in length.  Twenty feet should be more than sufficient length to increase antenna gain without any negative repercussions.

4. Use batteries––preferably rechargeable ones. Cost: $5- $20

Not all rechargeable batteries are created equally. Lean toward name brand, higher quality cells. Dollar store batteries lack longevity.

Not all rechargeable batteries are created equally. Lean toward name brand, higher quality cells. Dollar store batteries lack longevity.

This is one suggestion that may require a modest investment, but will pay off in more ways than one. I honestly can’t think of the last time that I listened to a portable radio while it was plugged into mains/grid power via an AC adapter. Since at least 2007, I have been powering my portables exclusively with good-quality rechargeable batteries.

Why rechargeables–? First and foremost, with rare exception, shortwave radio manufactures give little thought to the AC adapters they include with a portable shortwave radio; they’re simply an accessory that is expected, so they deliver. Indeed, the AC adapter that came with my Tecsun PL-880 (Tecsun’s latest flagship portable) came with an AC adaptor that does a great job charging the internal batteries, but injects copious amounts of RFI in the process. Running the radio off of batteries solves the problem instantly.

Many radio manufacturers now include rechargeable batteries with the purchase of a radio. Some of these batteries are AA cells, others are slim packs resembling cell phone batteries. Consider purchasing an extra battery if you’re worried yours might die away while you’re listening to your favorite program; a quick switch, and you scarcely miss a beat. If your portable comes with rechargeable batteries, most likely the radio even has a built-in charge control circuit.

I should add that I’m a fan of the traditional AA battery, even though they’re bigger than other battery types. After all, they’re nearly always accessible.  If a radio takes AA batteries, I never use the radio’s built-in recharger, instead I prefer a MAHA brand battery charger, as they condition and give a longer life to the rechargeable cells.

Sure, buying rechargeable batteries and, potentially, a good battery charger require an initial outlay of money, but the rewards are a quieter receiver and a more earth-friendly approach than heavy-duty or alkaline batteries can deliver.

5. Listen with headphones or earphones.  Cost: $0 – $100

Sony MDREX10LP in-ear headphones are inexpensive and effective.

Sony MDREX10LP in-ear headphones are inexpensive and effective.

Why headphones? Ask any serious DXers (amateur radio or SWL) and they’ll tell you headphones are an indispensable tool. While armchair listening is great with your radio’s built-in speaker, headphones give you better sound isolation, and your radio’s audio is equally balanced. Digging a weak station out of the ether is easier with headphones.

Almost every portable you buy today will come with a complimentary set of earphones. Quality varies amongst these, but in my experience, the headphones included tend to be of the lowest quality; for shortwave listening, these may suffice.

Though AM and shortwave radio is not considered a “high-fidelity” medium, thus not requiring a wide frequency response, I still prefer listening with quality earphones/headphones. As long as your headphones have a decent frequency response–I usually aim for 8 – 22,000 Hz–you’ll be pleased.  And do make sure your headphones or earphones are comfortable to wear for extended periods of time.

Yamaha CM500's are a worthwhile investment if you're an amateur radio operator.

Yamaha CM500’s are a worthwhile investment if you’re an amateur radio operator.

One of my favorite pair of in-ear earphones for SWLing are the popular Sony MDREX10LP series. They’re comfortable, responsive, isolate noise, and are available from a number of retailers for about $10 USD per pair.

For over-ear headphones, I like the Panasonic RP-HTF600. They’re large, comfortable, and deliver amazing fidelity for about $30 USD.

If you also happen to be an amateur radio operator, the Yamaha CM500 headphones have a built-in boom mic that works amazingly well.  At $50 USD, they are a steal. When I received mine, I opened the package, plugged the headphone and mic jacks into my Elecraft KX3, and I was on the air with them in seconds.

6. Learn to use use Exalted Carrier Reception (ECR/ECSS). Cost: Free

ECSS-PL-660“Exalted Carrier Reception” (ECR) a.k.a. Exalted Carrier Single-Sideband (ECSS) is just a fancy way of saying that an AM broadcast carrier is tuned in while in single-sideband mode. This is most useful when you’re trying to listen to weak broadcasters.

This (ECR) is, in a sense, the frugal listener’s version of synchronous detection. Why does it work?  As my knowledgeable ham buddy Mike (K8RAT) explains: ”You’re removing any selective fading problems by filtering away one of the sidebands, and injecting a carrier of steady amplitude which eliminates the ‘tearing’ heard when a broadcast carrier is varying in amplitude.”  Got that?

Even if you don’t understand it exactly, here’s how to use ECR:  Simply find a strong AM station on your radio.  Next, turn on the BFO or SSB mode on your radio. As you adjust the tuning knob, you’ll hear an audible whine, the pitch of which will change with every increment of tuning. “Zero-beating” the carrier follows next–this is simply tuning in the signal until that whine is gone, and the AM station can be heard as clearly as if the radio were in AM mode.

The fidelity of ECR/ECSS is typically not as good as AM–mainly because SSB filters are usually narrower than AM filters–but it does lower the noise floor, increase the stability of the received signal, and make this signal “pop out” a bit more.

But don’t take my word for it–let your ears be your guide! In this recording, I tune in a low-power station on my receiver in standard AM mode, but at 15 seconds into the recording, I switch to the upper-sideband (SSB) mode, zero-beat the frequency, then open up the SSB filter a little wider.  Then, just before I end the recording, I switch to lower-sideband–something you can do if there is interference in the upper-sideband, for example:

It’s amazing how much background noise ECR removes.

If you’re lucky enough to have a tabletop radio, chances are it has an SSB mode (although there are some very rare exceptions). Less than a third of portables on the market, however, have SSB. Here is a list of the most popular portables with SSB that are, or have recently been, in production.

7. Use a web receiver.  Cost: Free

If you live in an area with frustrating RFI, but want to listen to the shortwave bands from home, try an online web-based receiver. Sure, it’s not quite like tuning a radio at your fingertips, but it’s the next best thing, and also a handy tool for checking propagation or verifying your own signal (if you’re an amateur radio operator).

My two favorites site are:

  • GlobalTunersGlobal Tuners which has a number of remotely-controlled radio receivers all over the world. You must register before you can participate, but registration is free. Global Tuners even has a free Android app that permits remote receiver control via your smart phone or tablet.
  • utlogo4bThe University of Twente Wide-band WebSDR is an amazing resource. Not only can you control this receiver, but so, too, can a few dozen other web guests––all at the same time! I’ve used U Twente’s receiver on a number of occasions to listen to European pirates. Cost? Again, it’s free.
  • The KiwiSDR network has become the largest network of web SDRs since we first published this post. You can literally travel the world via the KiwiSDR network! Click here to view KiwiSDR stations on a map, and here to view them in a searchable list.

8. Finally, practice listening. (Cost: Just some time)

SP600Dial3My final bit of “free” advice sounds a little philosophical, but rest assured, it isn’t.

I’ve always likened radio listening to another of my interests, astronomy–an entirely different hobby that, unless you’re a radio astronomer, relies on an entirely different sense.

Why the comparison?  I’ve known some talented astronomers that, with just a basic pair of binoculars, can see much more in the night sky than I ever could. Are their eyes better than mine? Not necessarily. Their eyes are just experienced in the field of stargazing; they know what to look for, and most importantly, what to appreciate. Their brains decipher the images of bright or faint stars, subtle variations in color or shape, and focus on what they consider important. In short, this is not an ability you can pick up overnight; it takes patience, experience–and true passion.

Radio listening is, in that sense, much the same. Though I’m by no means a good example, I do wish I could go back to the days of my youth with the ability to listen that I have developed over the decades. There must have been so many jewels of stations hidden in the ether that I completely skipped over…My ability to, for example, pick out the ID of a faint station, to tune accurately and quickly, and to cope with adjacent noise, have all been honed since then, a result of time spent just listening.

My good friend Vlado (N3CZ) is a case in point: he is one of the most capable ham radio DXers I know. His extraordinary ability to pull intelligible conversations and CW (Morse code) out of the static, even in crowded radio conditions, is simply astounding. Vlado’s main transceiver is nearly two decades old, and by no means a benchmark technically. If you ask Vlad if he uses filters and digital signal processing, he will wisely tell you, in his Macedonian accent: “Your best filter is between your ears.”

The same goes for SWLing. I have spent enough time listening to shortwave and weak DX that I can now pull conversations out of the noise that my (non-radio) friends can barely detect. I’m convinced this is healthy exercise for the old grey matter.

David Goren, good friend and the highly-creative radio producer behind Shortwaveology.net, describes how shortwave listening enhanced his career:

“When I first discovered shortwave, I’d strain my ears through the static and all the layers of jumbled up sounds trying to hear as far around the world as I could. Years of this kind of intensive listening tuned my ears in such a way that allows a laser-like focus on the sonic details when working in the production studio making radio stories.”

Indeed, I’ve heard and can certainly appreciate the results of his remarkable “laser-like” listening ability; check out Shortwaveology.net for your own experience of David’s talented ears. You’ll be glad you did.

No doubt you enjoy listening already; my contention is that it has more benefits for your brain than Sudoku puzzles, and iis even more fun. Plus, did I mention that it’s free? You don’t need to pay a subscription to listen to the radio. There’s no real trick to this: it just takes time…interest…and a pair of ears.

Happy listening!

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