Dan reviews the Tecsun PL-330 portable shortwave radio

Many thanks to SWLing Post contributor, Dan Robinson, who shares the following guest post:

Tecsun PL-330: The Powerful Mini With One Serious Design Issue

by Dan Robinson

As SWLing Post readers know, I have a huge radio collection – including premium receivers and portables, now nearly 100 in all.

So, these days I am hesitant to add too many, but I continue to take interest in what companies such as Tecsun and Sangean are doing in the way of stuffing the latest chip technology and capabilities into portables radios.

The last receivers I reviewed included the Tecsun PL-990x, which has developed quite an enthusiastic following since its consumer version was released in 2020, and the Tecsun S-8800.

Out for some time now is the Tecsun PL-330. By now there are many reviews of it on You Tube and elsewhere.

It’s become a familiar observation for many of us – if this were still the 1960’s and 1970’s – even into the 1980’s, which could be considered the golden days of shortwave and we had receiver technology like this, well what a joy that would have been.

When I traveled around the world both before and after college, and professionally for Voice of America in the 1980s and 1990s, wow what a good time I could have had with today’s portables!

Some world band portables radios back then were superb performers. The Grundig Satellit series 500/700/600/650 come to mind – but these were not exactly what I would call small portables.

Paging through Passport to Worldband Radio from 1990 (wow, that’s 30 years ago!) you see others such as the SONY SW-1, Panasonic RF-B65, and of course, the SONY ICF-2001D/2010 which introduced killer synchronous tuning technology in the 1980s and remains popular today decades after it first appeared.

Also available were the SONY ICF-SW55 and later in competition with the 2010, the SONY ICF-SW77. Today, I have four SW-55s and two SW-77s and still use them regularly.

Tabletop receivers back in the good ol’ days offered multiple selectivity positions. One of those was the Lowe HF-225 (and later Europa version) along with the HF-250, Kenwood R-5000 and R-2000, ICOM IC-R71A, and Yaesu FRG-8800 among many others.

But as far as smaller portables go, features such as synchronous detection and multiple selectivity were still pretty limited, and a number of receivers didn’t offer selectable synchronous as was eventually offered on the Drake R8B and later production of the SW-8.

The RF-B65 by Panasonic – which today remains sought after for its amazing sensitivity – was hobbled by having a single selectivity position. Same with SONY’s SW-1 and SW-100, and 7600GR, though SONY’s PRO-80 had two bandwidths.

Indeed, it wasn’t until Eton brought out the E-1, with its three bandwidths combined with Passband Tuning (though no notch filter) that a portable finally reflected capabilities of some of the better tabletop radios (though lacking a notch filter).

The Grundig Satellit 800 was close in competition with the E-1 (though the earlier Sat 600/650 series also had multiple bandwidths) but was bulky.

Fast forward to 2021 – credit due to Tecsun and more recently to Sangean with its 909X2, for some years now we have enjoyed Asia-originated portables with multiple selectivity and synchronous mode, though sync implementation on some has left much to be desired.

Which is where the PL-330 comes in. When I look at the 330, I am reminded of one of the now ancient SONY portables, the ICF-4920 which was a super small slide-rule receiver that nevertheless was quite sensitive.

Like the 4920, which you could easily slip in a pocket, the PL-330 is a perfect travel portable. Only the Belka-DX SDR and still wonderful SONY SW-100 compete in terms of performance and size.

The 330 is basically a PL-990x in miniature: smaller speaker obviously, shorter antenna, no bluetooth capability or card slot. But as many people who frequent the Facebook groups have observed, pretty much anything the 990x can do, so can the 330.

This radio has ETM/ATS tuning, synchronous detection, multiple bandwidths in AM, SSB and MW, FM mono-stereo speaker control, alarm/timer functions, external antenna jack, display light, and other features.

Tecsun decided to go with a BL-5C battery here – the same with the new PL-368. I think this is unfortunate, since it requires one to obtain a number of those flat batteries if you want to travel and not have to re-charge. On the other hand, this is not a crippling design decision.

What is an unfortunate design problem, in my view, involves the simple question of tuning the receiver.

The main and fine tuning knobs on the right side of the PL-330 are embedded into the cabinet just far enough as to make easy rapid finger tuning of the radio nearly impossible.

In fact, in my testing it’s impossible to thumb tune the radio more than 10 kHz at a time. The same applies to using the lower knob which controls volume. When in FM mode, this issue make tuning just as frustrating almost forcing one to use rapid scan mode.

Another puzzler: Tecsun limited bandwidths in AM SW to three, while in SSB you have 5 bandwidth options. In AM mode, you have a 9 kHz bandwidth, another puzzling choice. Longwave too is limited to 3 bandwidths.

But overall, none of these problems really knock the PL-330 down very far. This is one mini powerhouse of a radio, one that makes you think “wow, if I had just had this back in 1967 or 1973 or 1982.

Some additional thoughts. My particular PL-330 was supplied by Anon-co but is a pre-production version and so does not have the latest firmware. Thankfully, I have not experienced the issue of SSB tuning running in reverse as others have.

NOTE: As most users know by now, but some newer users may not, you cannot charge one of these radios – whether Tecsun or Sangean – using the mini-USB port and use them at the same time. . . there is just too much noise introduced from the charging process.

This little mentioned feature: just as the Tecsun 909x has a re-calibration function, so does the PL-330. Tecsun itself initially declined to acknowledge this, but finally confirmed through Anon-co.

The procedure: Switch to LSB/USB. If the station is not zero beat, hit STEP button once and then quickly again to move the flashing display down arrow so it’s above the far right digit. Then fine tune the station for zero beat. Hold LSB or USB in for a couple of seconds. The LCD blinks. You then have zero beat – but be sure to repeat the process for LSB and USB.

I should mention that just like on the 990x, the re-calibration process doesn’t mean the receiver is then zeroed up and down the shortwave bands. You will likely have to repeat the process from, say 25 meters, to 19 meters, to 49 meters, etc.

I have come to enjoy using the PL-330 here in my house, though like other portables in my collection I need to position it in one particular corner of my home away from incoming cable TV lines.

The PL-330 and the Belka DX are currently king of the pile when it comes to my smaller travel portables.

I fully expect there will be no further receiver development by Tecsun after the PL-330/990x/H-510 radios – but that company will certainly have left us with some great receivers as the days of shortwave approach an end.

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Do Reciva WiFi radios use a token system? Let’s prove or disprove this now.

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Many thanks to SWLing Post contributor, Rob Gray, who recently reached out with some potentially concerning information about Reciva radios.

Evidently, some users are claiming that Reciva chips require a periodic token refresh to keep the radio functioning properly.

Rob writes:

From this internet radio forum a contributor wrote:

“Apparently, even stations with URLs stored locally on the radios as presets, will eventually stop working. The Reciva chips require a token to be renewed periodically from the Reciva server; once the server is turned off, the token can no longer be renewed, and the radio becomes a dead parrot. Apparently Reciva did this to prevent their chips from being pirated.”

Another contributor wrote:

“….when I asked Grace about it, their reply was that while the presets would work for a time, eventually even that function won’t work because the radios require a token to be renewed periodically from a Reciva server. If the server is gone and the token can’t be renewed, the radio becomes a doorstop. It wasn’t clear how long the radio will work…”

I don’t know if this is true or not (time will quickly show), but when I asked C.Crane about this a while back, they seemed aware of the possibility and their experts gave it a 50/50% chance of success/failure based on tokens.

Speaking with a very knowledgeable friend on the topic, he has described that the real, ultimate way to tackle this problem is to have a ‘packet sniffer’ and monitor all the traffic in/out of the network to understand what data is being used (like if there is a token for example) and reverse engineer what Reciva is doing.

Thank you for bringing this to my attention, Rob.

Tokens: Can someone prove or disprove this?

There are some savvy programmers, network specialists, developers, and hackers in the SWLing Post community. My hope is that someone can use a packet sniffer or similar device to determine if this is true or not. Since the Reciva service will close down by the end of the month, time is of the essence.

My hope is that if there is a token, it won’t shut down functionality to a point that we can’t stream from our own IIS or perhaps the token can be reverse-engineered. Or maybe there is no token at all, or if there is it will have no impact on usability after the Reciva service has closed.

Please comment and/or reach out to me with any evidence. I’d like to clear this up with some facts. Many thanks in advance!

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Radio Lavalamp rebroadcast on April 4, 2021 via WRMI

April Saturday Night Broadcasts of UBMP on Channel 292

The Sangean ATS-909X2 has landed

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This morning, I took delivery of an ATS-909X2 that Sangean dispatched for me to evaluate. I’ll be writing a review of this radio for an upcoming issue of The Spectrum Monitor magazine.

I won’t lie: this is a handsome radio.

I know some SWLs dislike the front panel tuning dial, but I like it. It reminds me of one of my all-time favorite radios: the Sony ICF-SW55:

I also love the ‘909X2’s large display and intelligent backlighting.

I’ve just started setting up the ‘909X2: inputting local time, setting DST, changing the format to 24 hours, and learning my way around manual and direct-entry tuning.

The manual appears to be very comprehensive and I plan to go through it page by page because this radio actually has quite a lot of settings/configurations.

SWLing Post contributor, DanH has had his ATS-909X2 for quite a while and I expect he’ll be updating us on his findings when he has time. Also, I understand Dave Zantow has been evaluating this radio and should also be sharing his thoughts soon. We’ll provide updates when available.

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A review of the Ocean Digital WR-23D WiFi, FM, DAB & DAB+, and Bluetooth Portable Radio

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Readers might recall that last year, I reviewed the Ocean Digital WR-26 portable radio and was pretty impressed.

Although it turns out a number of SWLing Post readers were familiar with Ocean Digital and had purchased some of their radios, I hadn’t heard of them until an SWLing Post contributor encouraged the company to contact me.

I must say: all of my communications with Ocean Digital have been very positive and the company has also been very receptive to my frank feedback. All good things.

Ocean Digital reached out to me last month and asked if I would like to test their WR-23D portable radio. Why not? They dispatched on immediately from their Amazon stock here in the USA.

In the spirit of full disclosure, Ocean Digital sent this review sample to me at no cost and as soon as this review has been published (as in, right now), I’m sending it to one of our SWLing Post Patreon supporters I pick at random.

Initial impressions

The Ocean Digital WR-23D sports an ABS plastic body that feels very solid in the hand. Indeed, some shortwave portable manufacturers should take note–the ABS structure is so solid, there’s no give when I press into the middle of the speaker grill, for example. I feel like this radio would survive falling off of a table or shelf with no problems.

The backlit 2.4″ color display is very easy to read with crisp graphics, text, and ample contrast.

The top of the radio features a power button and three dedicated memory preset buttons. The volume control is also mounted on the top of the radio and protrudes out of the front slightly so your thumb can move it.

On the front of the radio, there are dedicated buttons for the Home screen, EQ/Local button, Favorites, and Sleep Timer.

In the center, there’s a circular navigation control and selection button.

On the back of the unit, you’ll find the telescoping whip antenna for FM, DAB/DAB+, an LED indicator for charging, a 3.5mm earphone jack, and (yes!) a USB-C charging port. I’m so happy to see a USB-C port rather than the older Micro USB variety.

Sound

The front-facing speaker delivers balanced audio. There has obviously been some attention given to the speaker enclosure because it produces a bit more bass than I would have anticipated. There are 12 EQ presets you can use to tailor the audio as well. The WR-3D is not an audio powerhouse–in fact, the audio level stops short of allowing the speaker to splatter–do don’t expect a “boom box” response.

For listening to music or voice in your office, bedroom, or living room? Yeah, it’ll work a charm!

Portability

What I love about these Ocean Digital units is that they have a built-in rechargeable battery.

In my household, this is huge.

I often carry my WiFi radios around the house, moving from the kitchen, to my office, to outdoors near the wood shed (it’s the time of year I start splitting firewood again!).

I’ve found that not only does the battery power the WR-23D for many hours at a time, but the WiFi receiver in the unit is also robust enough that the radio can communicate with our router outside the house. With that said, the WiFi reception is not as good as it is with the recently reviewed CC WiFi 3 which actually sports an external WiFi RX antenna. Then again, the CCWiFi 3 doesn’t have a rechargeable battery either.

Internet Radio

The Ocean Digital WR-23D uses the Skytune radio station aggregator to search for Internet radio station streams.

In short: I like Skytune. It’s easy to search, they’ll add streams if they’re missing any, and it’s well-organized. Instead of reviewing the aggregator again, I’ll point you to the Ocean Digital WR-26 review for more detail as the navigation is identical other than the WR-23D has a nice color screen to display information.

Of course, I’m sure a number of readers have been put off by the whole idea of a dedicated Internet appliance for listening to radio in the wake of Reciva’s announced closure. For more on this topic, I’d strongly encourage you to read my thoughts in the CC WiFi 3 review (note that the CC WiFi 3 also uses the Skytune aggregator).

On Internet appliances like the WR-23D, one does worry about WiFi radio functionality failing if the station aggregator disappears. We recently posted a way you can hack some Grace Digital and C.Crane radios that use Reciva.

In the case of the WR-23D, WR-26, and CC WiFi 3 (basically all of the Skytune receivers I’ve reviewed) you can actually program your favorite radio stations manually. In fact, it’s very easy. You simply find the radio’s IP address on your network (the manual describes how to find this in the Configuration menu selection). Then, enter the radio’s IP address in a browser on a computer or device that is connected to the same WiFi network. You’ll get a window that looks like this where you can add your own streams, organize memories, and even perform basic control of the radio:

But, again, if the whole idea of an aggregator-tied device like the WR-23D is unappealing, I get it. You might simply pair your smartphone or tablet with a Bluetooth speaker and use a system like Radio Garden or TuneIn to cruise the world of online radio stations.

Bluetooth

Speaking of Bluetooth speaker, yes, the WR-23D is one of those, too! Simply select “Bluetooth” from the home menu and pair it with your favorite device. Couldn’t be easier!

FM radio

The WR-23D has a very capable FM radio. I had it scan my local FM dial and it automatically picked up all of the stations I would have expected. The radio has both auto and manual tuning.

In addition, the WR-23D displays RDS information on the screen. This is a feature I love especially when travelling as it helps me ID the station I’m tuned to.

DAB/DAB+

Unfortunately, we have no DAB/DAB+ stations in the US, so I was unable to test this functionality.

Summary

As I mentioned, I really appreciate the matte finish ABS chassis. I like to know that my portables can survive a fall.

I’ve been using the WR-23D here at SWLing Post HQ for about one month and only have a few minor/personal complaints. For example, I wish the headphone jack was on the side of the radio instead of the back. Also, I wish the telescoping whip antenna fit into a recess on the chassis rather than being fully mounted on the outside. I would like to see a fold out tilt stand on the back of the unit (I’ve actually used the antenna to prop this radio at an angle, but that’s not ideal).

If you’re looking for a truly portable WiFi radio and Bluetooth speaker with a proper FM and DAB/DAB+ receiver the Ocean Digital WR-23D is a solid choice. Amazon’s current price is $79.99 US with shipping and free returns–I feel like this is a value for all this radio has to offer.

I can say this: the SWLing Post Patron who wins this WR-23D will really enjoy it! I have.

Click here to check out the Ocean Digital WR-23D at Amazon.com (SWLing Post affiliate link!)

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