Category Archives: Radios

The Tecsun PL-330: Some details about this compact shortwave portable in development

Source: tecsun.com.cn

Many thanks to a number of SWLing Post readers who shared a link to this website (in Chinese) with photos and details of the new Tecsun PL-330. Note: The server hosting the PL-330 page has been unreliable the past few days.

Some of you might recall the PL-330 in photos of the new Tecsun product line we posted last year. Recently, a handful of preliminary working prototypes have been produced,  so I reached out to my trusted Tecsun contact for more information. Here’s what I’ve learned:

Position in Tecsun product line

In terms of the Tecsun product line, the PL-330 appears to be the successor to the venerable Tecsun PL-310ET and/or PL-380.

The PL-330 will have features these legacy Tecsun models do not have, namely:

  • synchronous detection,
  • single-sideband reception,
  • and an upgraded ETM (auto tune and store) feature.

It also appears the SSB tuning steps could be as fine as 10 Hz. Most impressive, if true.

Size

Size comparison: PL-330 (left), PL-990 (middle), H-501 (right)

I refer to radios in this size class as “ultra-compact.”

The PL-330 measures 139 × 85 × 26 millimeters (5.5 x 3.3 x 1 inches). Its form factor is very similar to the PL-310ET, but much thinner in profile. The total depth of the radio is only 26 mm.

I love the idea of an even thinner profile, although this certainly limits the type of internal battery that can be used.

Battery

The PL-330 is powered by a single BL-5C lithium battery.

In my world, this is a bit of a negative, but I’m sure the BL-5C was one of the only viable battery options for a radio that’s only 26mm thick.

On the plus side, the BL-5C is widely available, affordable, and can be charged internally.

On the negative side?

Well, I find that the overall capacity doesn’t match that of, say, three AA batteries. Also, I find that the battery’s longevity (meaning, how many charge cycles it can handle) is not that impressive–arguably worse than any other rechargeable battery system I’ve used.

Another reason I prefer AA batteries in compact portables is I know no matter where I travel, I can easily purchase them at almost any retailer, airport, or even hotel, in a pinch. In the past, when I’ve traveled with radios that use the BL-5C, I simply carried a fully-charged spare in a poly zip-lock bag (to protect the battery contacts from inadvertently shorting.

In addition, when I fly, I like to carry as few Lithium batteries as possible.

Perhaps, however, I can find a very high quality BL-5C to use in the PL-330? I would appreciate any leads from readers.

Performance

Since the preliminary prototypes were more or less mechanical prototypes and lacked most of the features planned for this model, there are no performance reports as of yet. In fact, I would be skeptical of any reports you might read in advance of the final production model.

Availability

Like the PL-990 and H-501, there are no reliable estimates for availability or shipping yet. The Covid-19 pandemic has slowed down this process. Most likely, the PL-330 will be released after the PL-990 and H-501, but that isn’t even certain.

Stay tuned!

The PL-330 will have a number of other features and specs, but these are early days and I prefer sticking with what we do know now. As soon as I learn more, I’ll post updates–bookmark the tag PL-330.

Note this reddit thread with an English translation of the Chinese page I mentioned at the beginning of this article (thanks, Tom Daly). It mentions more details, but again, it’s such early days I prefer to stick with what has been confirmed. As with any product in development, a number of changes could occur before the first production run.

Of course, I will review and evaluate the export version of the PL-330 when as soon as it’s available. Stay tuned!


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Trans-Oceanic spotted in 1959 film “On the Beach”

Many thanks to SWLing Post contributor, Mario Filippi (N2HUN), who writes:

Maybe this is old news but in the 1959 film “On the Beach” which was from the book by Nevil Shute, there is a Zenith transoceanic shortwave radio in this clip from the film. It is inside the lighthouse and appears just about five minutes into the film.

Big stars in this one, Gregory Peck, Ava Gardner, Fred Astaire and Anthony Perkins.

Thanks for the tip, Mario! I love classic films, but I don’t think I’ve seen On the Beach. I’ll put this on my watch list!

I’ll add this post to our ever growing archive of radios in film!

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You’ve Been Warned: Emilio just brought a Grundig Frankenradio to life–!

Many thanks to SWLing Post contributor (and certified mad scientist), Emilio Ruiz, who writes:

Recently I was given a broken Grundig G8 Traveler II.  This radio had an accident–the case, speaker, tuning knob, and volume controls were all broken or damaged.

I discovered that the tuning and volume controls are not potentiometers, they are a rotary encoders, so I substituted the tiny and broken original controls with rotary encoders (typically used for Arduino projects), but I needed to remove the 10 kiloohms resistor to work properly (only used the CLK, DT, and GND pins).

All materials were reused from other things, the result is like a “Frankenstein radio”.

The “telescopic” antenna is a tape measure/flexometer which was broken too. I replaced the original speaker (which I think was another impedance) with a proper 8 ohms speaker which produced low volume, so i decide add a Pam8403 amplifier module for best performance. The total current drain is 0.10 amp for a regular “loud” audio level.

So the Grundig Frankie is alive!!… It’s alive!!

Click here to view video in new window.

This is brilliant, Emilio! Although this radio is quite scary–and, let’s face it, “post-apocalyptic”–I think it’s absolutely amazing! I love the handle and the tape measure antenna. You, sir, are a mad scientist and I look forward to your next creation! (I’ll just take shelter first!) 🙂

Anyone else ever created a Frankenradio? Please comment!

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Five solid radios to get you through the pandemic (or any emergency, for that matter)

The original CC Skywave portable radio is among the pricier of my suggestions, but also packs the most features. Seen here on location in Canada.

Over the past four weeks, I’ve gotten a number of emails from first-time readers of the SWLing Post who’ve landed here because they’re searching for a new radio. While not all these readers are necessarily interested in shortwave, what they are interested in is a good, solid battery-powered radio to receive local news on AM and FM.  A few have specifically asked for a radio with NOAA/Environment Canada weather radio reception. Others are looking for a self-powered or hand crank radio option, while some specifically asked for a shortwave radio to listen to international broadcasts. A common point was that no one wanted to spend a lot, inclining toward something cost-effective––understandable in these uncertain times––but they nonetheless are looking for quality, for a radio that won’t fail them, even if their Internet service does.

Radios provide local connection

The following post is my response to these questions. I’ve selected five radios under $90 USD that can fill a variety of needs, and also offer good information support in the event of an emergency. I gave priority to radios that can be powered by common AA batteries––all but one model can be powered by common AA cells. Also, three of the five radios below can receive North American weather radio frequencies.

Note that while many of these models have been chosen with North American readers in mind, there are a number of similar models available in Europe, Asia, and the Pacific that have DAB/DAB+ reception. This list is by no means comprehensive, as there are literally hundreds of similar radios on the market; if you feel I’ve left an ideal radio off this list, please feel free to share your thoughts in the comments section.

Self-Powered Radios: The C. Crane CC Solar Observer ($50)

There are a number of self-powered (hand-crank and/or solar powered) radios on the market. My favorite self-powered radio for receiving local news and weather here in North America is the C. Crane CC Solar Observer.

I like the CC Solar Observer because it’s substantial, well made by a company I trust, and has three different ways to power it (AA batteries/AC adapter, a hand crank, and solar charging). The internal rechargeable battery pack stores energy from the hand crank, solar panel, or AC adapter. In a pinch, this radio can even charge a mobile phone via a supplied USB adapter.

The backlit dial is such a thoughtful design feature: whether the power’s out or you’re just out camping, it’s good to be able to see where you’re tuning in.

And, of course, this radio performs very well, indeed. You’ll be pleased with AM, FM and weather radio reception. Audio is quite respectable via the internal speaker, and the overall build quality is excellent. The CC Solar Observer also sports an LED flashlight, and is, to my knowledge, the only self-powered radio with a very handy backlit dial!

This is not the cheapest in the line-up: new, these retail anywhere from $45 to $60 USD. Still, I think this radio is a very worthwhile investment, and really, the best of the bunch.

Retailers:

Other Options: The Degen DE13 DSP is much smaller, sports the shortwave band, and is less expensive (roughly $25 USD). I also like the Tecsun GR-88, which has a similar form factor to the CC Solar Observer, and also includes the shortwave bands (roughly $55 USD). Negatives for both of these radios is that many are sold from China, which could mean longer-than-normal shipping times, should you need it soon. Also, neither of these models include North American weather radio frequencies.

For more emergency radios, also check out Eton Corporation’s offerings.

Simple Pocket Radios With Built-In Speaker: Sangean SR-35 ($20)

Small form factor ideal for you? I like the Sangean SR-35 because it’s such a simple, easy-to-use radio, is obviously incredibly portable, and produces respectable audio for a pocket radio. (The SR-35 is also a favorite among SWLing Post readers.) The SR-35 sports an 18” telescopic FM antenna and built-in AM antenna. Performance is fantastic for a radio in this price class. If you don’t mind an analog dial and the fact the SR-35 can’t receive North American weather radio frequencies, you’ll love this affordable little pocket radio.

Retailers:

Other Options: Although the Sangean DT-800 is pricier (roughly $55 via Amazon, $79 via Universal Radio) it includes weather radio reception and even weather alerts––click here for my full review. The C. Crane CC Pocket is very similar to the DT-800, and retails for $65 via C. Crane, $60 via Universal, and $65 via Amazon. I’m also a massive fan of the Sony ICF-S10MKII for its AM/FM performance and superb battery life, but unfortunately it’s no longer in production, so your best bet is to look for one on eBay.

Battery Endurance Radios: Sangean DT-160 ($50)

I like the Sangean DT-160 because it’s a respectable AM/FM portable radio that can run on two AA batteries for an impressive 116 hours. I can confirm this because I once tested its clear-case cousin, the DT-160CL. It’s very compact, and sports excellent FM and AM performance that will snag all of your local broadcasters. Unlike some of the other selections on this page, it lacks an internal speaker and North American weather radio frequencies. Still, if you’re looking for a pocket portable with digital display that’s an incredible battery miser, look no further than the Sangean DT-160.

Retailers:

Other Options: I’ve only tested a handful of radios for battery performance. The DT-160 is certainly king in this category, although no doubt there are many analog models that could achieve even better battery longevity. The models that have impressed me the most both in terms of performance and battery life are the Sony SRF-59 and SRF-39FP (clear case). Sadly, neither of these models is still in production, but you can still track down used ones on eBay.

Large Portable Radios: Sangean PR-D4W ($65)

Sangean radios are a favorite among SWLing Post readers because they’re built well and typically perform exactly as they should. In fact, when I mentioned I would be writing this post, several readers immediately suggested the Sangean “PR” series radios, and perhaps my pick of this bunch is the venerable Sangean PR-D4W. I like this particular model because it receives AM, FM and North American weather radio frequencies. It even has a weather alert function. Audio from the built-in speaker is pleasing and operation is very simple. Most functions are available via one-button press. Note that Sangean also produces a PR model for visually-impaired customers that is similar to the PR-D4W, although it lacks weather radio; this is the Sangean PR-D17 (click here to read a full review). The only gripe I have with the PR-D4W (and many of the “PR” series radios) is a lack of carry handle. Unlike the other radios in this list, the PR-D4W requires four “D” cells for battery operation.

Retailers:

Other Options: Click here to check out the full line of Sangean “PR” series radios.

Portable Shortwave Radios: C. Crane CC Skywave ($85)

The C.Crane CC Skywave

The CC Skywave is a brilliant little radio and is certainly time-tested. It’s a fine broadcast receiver and one of the most sensitive travel portables on the market. For those of us living and traveling in North America, the CC Skywave is a veritable “Swiss Army Knife” receiver, as it not only covers AM, FM and shortwave, but is a capable AIR band receiver plus incredibly adept NOAA/Environment Canada weather radio receiver. At $90 USD, I believe it’s the best radio value in the C. Crane product line. Click here to read our full review of the CC Skywave.

Retailers:

Other Options: Although it lacks North American weather radio reception and no AIR band like the CC Skywave, the Tecsun PL-310ET is a time-tested benchmark portable radio. At $48 shipped (via Amazon), it’s a bargain. An even less expensive option is the Retekess V115, at $29.99 shipped, and though its performance is pretty impressive for the price, I prefer the overall quality of the Tecsun and C. Crane better.

Summary

If you’ve found this post because you’re looking for a reliable AM/FM radio, I hope the selections above will give you some guidance. There are so many AM/FM radios on the market, we can’t cover them all.  But these solid radios are time tested, and in my view, among the best; they’re not likely to let you down when you need them most.


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A trusted companion: The Panasonic RF-2200 never lets me down

One of the great things about sheltering at home during the Covid-19 pandemic, is I have time to complete some projects that would have otherwise waited until much later this year.

Lately, I’ve been making a serious effort to have our firewood cut, split and stacked so that it’ll have time to cure and dry before winter.

I’ve got a load of wood in my truck to process today so decided to take the Panasonic RF-2200 outside and do a little AM BC listening to make the splitting session pass a little faster.

The Panny ‘2200 is ideally suited for this task: it has robust sound and is one of the best AM DX portables ever made. I knew it would easily lock on to WTZQ 1600 kHz (some 25 miles away).

But as I sat the ‘2200 on the tailgate of my truck, I noticed that the power switch was already on!

My heart sank. The last time I had the RF-2200 out was well over a week ago and I was certain I had no D cells charged and ready to replace these.

But then I turned up the volume and there was static. I tuned to WTZQ and it sounded like it was one mile down the road. I turned up the volume a bit more when I heard Homeward Bound by Simon & Garfunkel.

Turns out, there was a lot of battery life left. The Panny ‘2200 never let’s me down.

The Panasonic RF-2200 is a Holy Grail Radio. Plain and simple.

Do you have an RF-2200?  Please comment!


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Icom IC-705 delivery has been delayed

Many thanks to SWLing Post contributor, Paul Evans, who writes:

As you’d expect, Icom has formally delayed the delivery schedule of the IC-705.

Here’s the announcement from Icom Japan: https://www.icom.co.jp/news/4720/

The following is a machine translation of the announcement:

“Thank you very much for your patronage of ICOM products.

We have received reservations from a large number of customers about the IC-705, a 10W walkie-talkie with HF~430MHz all-mode, which was scheduled to be released in late March 2020. Some of the parts involved in the production of the product are delayed due to the new coronavirus issue, and production has been delayed due to this.

We apologize for any inconvenience caused to all of you who are looking forward to our products.

As for the delivery of the product, because it is a situation in which the arrival schedule of the part does not stand now, I will guide it separately as soon as it turns out.

We will take a while to deliver it, but we will do our best to deliver it as soon as possible, so please understand us.”

Thanks for sharing this, Paul. No doubt, delays are due to the affects of Covid-19 on both manufacturing in Japan and throughout the IC-705 supply chain.

For updates, bookmark the tag IC-705.

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Radio Waves: The Future of On-Air DJs, SDR Comparison, Radios That Never Were, and an Internet Radio Player for Linux

Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Jack Kratoville, Dave Zantow, and Dennis Dura for the following tips:


Live From Everywhere? The American Radio DJ In An On-Demand World (1A)

iHeartMedia owns and operates 858 broadcast radio stations, serving more than 150 markets throughout the U.S. The company reaches over a quarter billion monthly listeners ?in America.

In January, news hit that iHeartMedia was reassessing its ability to adapt to the modern music industry. The company said that it plans to make “significant investments … in technology and artificial intelligence.”

However, its on-air DJs were caught off guard when they found out that the company’s restructuring plan didn’t include them.

Streaming platforms has ushered in the digital age of music where each person make their own playlists. What does that mean for the future of the on-air DJ in the United States?

Click here to listen to the audio.

A comprehensive lab comparison between multiple software defined radios (RTL-SDR.com)

Librespace, who are the people behind the open hardware/source SatNOGS satellite ground station project have recently released a comprehensive paper (pdf) that compares multiple software defined radios available on the market in a realistic laboratory based signal environment. The testing was performed by Alexandru Csete (@csete) who is the programmer behind GQRX and Gpredict and Sheila Christiansen (@astro_sheila) who is a Space Systems Engineer at Alexandru’s company AC Satcom. Their goal was to evaluate multiple SDRs for use in SatNOGS ground stations and other satellite receiving applications.

The SDRs tested include the RTL-SDR Blog V3, Airspy Mini, SDRplay RSPduo, LimeSDR Mini, BladeRF 2.0 Micro, Ettus USRP B210 and the PlutoSDR. In their tests they measure the noise figure, dynamic range, RX/TX spectral purity, TX power output and transmitter modulation error ratio of each SDR in various satellite bands from VHF to C-band.

The paper is an excellent read, however the results are summarized below. In terms of noise figure, the SDRplay RSPduo with it’s built in LNA performed the best, with all other SDRs apart from the LimeSDR being similar. The LimeSDR had the worst noise figure by a large margin.[]

Radios that Never Were (N9EWO)

Dave Zantow (N9EWO) shares a new page on his website devoted to receivers and amateur transceivers that never quite made it to the marketplace. []

Shortwave: A Modern Internet Radio Player for Linux (It’s Floss)

Brief: Shortwave is a modern looking open source Internet Radio player for Linux desktop. We take a quick look at it after its recent stable release.

Shortwave is an interesting open-source radio player that offers a good-looking user interface along with a great experience listening to the Internet stations. It utilizes a community-powered database for the Internet stations it lists.

Shortwave is actually a successor of the popular radio app for Linux, Gradio. Its developer Felix joined GNOME and discontinued Gradio to create Shortwave from scratch in Rust programming language. If you were using Gradio as your preferred Internet radio station player, you can import the library as well.

Recently, Shortwave released its first stable version and seems to push new updates after that as well.[]


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