Category Archives: New Products

CommRadio CR-1 training videos

Don Moore, founder of CommRadio, has uploaded training videos for the CommRadio CR-1. These offer a pretty comprehensive overview of the CR-1, especially in terms of functions and menu structure.

Training Video 1 – Overview

Training Video 2 – Tuning

Training Video 3 – Menus and Functions

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A review of the Degen DE32 shortwave radio: compared with the DE321 and Tecsun PL-380

The Degen DE32 (Click to enlarge)

The Degen DE32 (Click to enlarge)

The Degen DE32 is one of the latest DSP-based analog radios to hit the market. In the past, I have reviewed two others: the Degen DE321 and the Kchibo KK-9803. Tecsun had announced a version of their own–the Tecsun R-2010–which I had eagerly anticipated, but I now believe it’s been dropped from their future offerings. [Update: Not true–the Tecsun has been released as the R-2010D, see review].

I purchased my Degen DE32 from this China-based seller on eBay. To my knowledge, eBay is the only place the DE32 can be purchased, at time of posting. As with the other radios mentioned above, my expectations were quite low for this little radio.  After all, at $27 US (shipped), you can’t expect top-notch performance characteristics.

IMG_5886

The DE32 un-boxed (Click to enlarge)

The DE32 comes with a carry strap, USB cable, a carry pouch, slim rechargeable battery, and operating instructions in Chinese. It does not come with a USB wall adapter (you’ll have to plug it into a USB port on your PC or other USB wall charger) and it does not come with a Micro SD card (for digital audio playback).

Audio

The DE32 has a small built-in speaker. The sound is a bit tinny, but is actually better than I expected from a speaker of this size. It makes for comfortable listening at close range–especially of spoken-word broadcasts. Happily, plugging in a good set of earphones helps audio fidelity tremendously.  This is the only way I would listen to music on the DE32 for an extended period of time. On FM, in fact, audio via earphones is surprisingly good (again, for a $27 radio–check out the audio sample below).

(Click to enlarge)

(Click to enlarge)

Performance

The DE32 covers three radio bands: medium wave (AM), FM and shortwave (5.6-22 MHz). Performance between bands varies greatly. The best band, by far, is FM. Again, no surprise here, as the DE321 and KK-9803 performed quite well on FM.

Here’s a 20+ minute audio sample of a local classic rock radio station I recorded, 95.7FM The Ride:

From my home, I can pick up my benchmark distant NPR station quite easily if I hold the radio in my hand. If I place the radio in a window sill, its performance degrades somewhat and contains more static as the extra grounding (from holding the radio) made a positive difference. The audio, though, is still perfectly intelligible. Local FM stations come in quite clear and fidelity (through headphones) is excellent.

The Degen DE321 (left) and DE32 (right)

The Degen DE321 (left) and DE32 (right)

I found that strong local medium wave (AM) stations sound quite good on the DE32–better than its cousin, the DE321, by a small margin.

While traveling over the holidays in December, I recorded extended samples of local station (630AM WAIZ) with both the DE32 and the DE321. You can listen to audio samples below, but first it’s important to note that I recorded these (and the FM sample above) with my Zoom H2N digital audio recorder, with radios at a comparable volume and via an audio patch cord.

Note that these recordings represent what each radio sounds like via headphones, not their internal speakers.

This is WAIZ on the Degen DE32:

Compared with WAIZ on the Degen DE321:

(Click to enlarge)

(Click to enlarge)

You’ll note that the DE32 sounds a little fuller than the DE321, but reception is nearly identical on this local strong medium wave (AM) station. I also found that the DE32 was quite effective at nulling out local RFI (electrical noises) on medium wave. At the beginning of the recordings, above, you’ll hear the static increase and fade as I null out the noise by turning the body of the radio. The DE321 couldn’t null out the local noise quite as effectively as the DE32.

For medium wave DXing, though, you’re better off finding a different ultralight radio. The AGC simply can’t handle marginal signals. Indeed, the same AGC problems plague the shortwave bands as well. DXing would be very unpleasant as the AGC circuit simply can’t cope with weak signals or fading.  All in all, as with medium wave, shortwave radio reception is fine for most strong signals.

Tecsun PL-380: What a difference an extra $23 makes

On shortwave, I decided to also compare the DE32 ($27) to the Tecsun PL-380 ($50). I tuned to a Radio Australia broadcast on 11,945 kHz. The comparison between these three portables is interesting:

First, the Degen DE32:

Now, the DE321:

Both the DE32 and DE321 struggled to receive the Radio Australia signal. In fact, if you really wanted to hear those broadcasts and had to listen on either radio for 30+ minutes  it would be frustrating and fatiguing. Notice, however, the difference when listening to the same broadcast with the Tecsun PL-380:

The Tecsun PL-380 receives circles around the DE32 and DE321 on shortwave and medium wave

The Tecsun PL-380 receives circles around the DE32 and DE321 on shortwave and medium wave (Click to enlarge)

There’s no comparison, really. In other words, you can hear it. The PL-380 has a lower noise floor, a fuller sound and no AGC problems as with the DE32 and DE321.  Hence the reason I always take the PL-380 while travelling–and as a back-up if I plan to record a broadcast on-the-go.

On the shortwaves, as with medium wave, the DE32 is respectable when tuned to a strong signal. For comparison to the weaker signals above, here is a short recording of the DE32 tuned to Radio Havana Cuba:

Not too bad, really. Keep in mind, though, that in my part of North America, Radio Havana broadcasts are so strong that I can pick them up without even extending the whip antenna on most portables.

Conclusion:

The DE32 has a built-in LED flashlight (Click to enlarge)

The DE32 has a built-in LED flashlight (Click to enlarge)

I haven’t tested the digital audio playback on the DE32 yet, although I expect the audio to be pleasant enough.  Of course, it lacks a display to show any information about the audio you’re playing, but it would be great to load a few podcasts or audio books on.

In summary, I’ve tabulated the pros and cons below from the moment I took the DE32 out of the box, below. Note that these pros and cons take into account the $27 price level of this radio:

Pros:

  • Very portable and lightweight
  • With micro SD card, storage for hours of pre-recorded content (though not tested in this review)
  • Adequate shortwave coverage (5.6 to 22 MHz) (see con)
  • Good audio fidelity, via headphones, on strong stations, slightly better than the DE321
  • Above average FM reception
  • Great nulling ability on medium wave (AM)
  • Features a built-in LED light (see con)
  • Overall build quality seems to be acceptable
  • Standard analog volume control (not digitally incremented levels)
  • Red LED tune light (see con)

Cons:

  • Shortwave sensitivity and selectivity are poor
  • Shortwave coverage lacks the lower tropic bands
  • Bandwidth is not adjustable and too broad for crowded conditions
  • AGC (as with many DSP portables in this class) cannot deal with weaker DX stations
  • Medium wave (AM) imaging on the shortwave bands if strong local station present
  • Antenna slightly loose in antenna hole when fully extended
  • No battery level indicator
  • No back stand
  • Tinny sound from tiny built-in speaker
  • To operate LED flashlight, you must press a button continuously to keep illuminated and LED  bulb orientation does not help with reading display in dark (see pro)
  • No option for standard AA or AA batteries–only included li-ion rechargeable pack
  • LED tuning light only works with very strong stations (see pro)
Conclusion? Though slim, lightweight and inexpensive,  I wouldn't find the DE32 DSP radio/digital audio player a useful radio in my collection.

Conclusion? Though slim, lightweight and inexpensive, I wouldn’t find the DE32 DSP radio/digital audio player a useful radio in my collection.

If I were you, would I buy it?

If you’re looking for a very inexpensive MP3/Digital Audio player with AM/FM and shortwave, and your expectations are fairly low, the Degen DE32 is a reasonable $27 piece of kit. Especially if you only plan to use the FM band.

If the digital audio playback abilities are not important to you, I would go with the cheaper ($18 US) Degen DE321.

But if you really want performance on medium wave and shortwave, and you could care less about digital audio playback, spend the extra $23 ($50 total) and buy the Tecsun PL-380, instead.  As you can hear above, it’s a much, much better receiver.

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CommRadio CR1 is now available for purchase

The CommRadio CR-1

The CommRadio CR-1

You can now purchase the CommRadio CR1 (we recently mentioned) for $500 plus $12 shipping on CommRadio’s website.

Don Moore (N0HDX), founder of CommRadio, placed the following statement on the CR-1 order page:

As the lead designer of the CR-1, I am pleased to offer this new radio to you. It draws on my experience as a kid building Knight Kits, from my paper route earnings through currently owning a classic Drake 2B and a Zenith Transoceanic; my benchmarks for enjoyable, high quality short wave listening. I added a smooth machined aluminum tuning knob and minimized the number of buttons to provide you (and me), an intuitively obvious and enjoyable radio to operate. This radio is solid as a brick, looks cool and sounds great. The tall feet have a purpose besides good-looks: rest your hand on the tabletop to spin the knob and for the bottom- speaker to bounce the sound to you instead of going straight up into up in space. The military ‘black box’ people who visit us see it sitting on the shelf with the bright OLED display and they all say: “I want one!” Well, here it is. Let the CR-1 draw you into the wonderful hobby I’ve enjoyed throughout my life.

I do love the look of this little radio–its simplicity reminds me of the Palstar line of shortwave radios.

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SDR Touch: An Android-based software defined radio

SDRtouchThough not available for the shortwave bands, Google Play reviews are mostly positive for the new software defined radio application that will run on your Android phone or tablet: SDR Touch.

According to the Google Play page, SDR Touch covers 50 MHz to 2.2 GHz and demodulates WFM, AM, NFM, USB, LSB, DSB, CWU and CLW signals. It requires an inexpensive USB rtl-sdr compatible USB DVB-T tuner. Click here to search eBay for RTL-SDR receivers. You then connect to your Android device via a USB OTG cable and SDR Touch should control the receiver.

SDR Touch’s Google Play website has a list of supported receivers–make sure to check the model number from eBay against this list before purchasing. Additionally, you should install their free demo SDR app to make sure your Android device is compatible.

This video shows SDR Touch in action on the FM broadcast band:

SDR touch claims that crashes should be expected as this app is still considered somewhat experimental.

Would be great if SDR Touch could support the HF bands some day.

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CommRadio is introducing the CR-1, a new tabletop shortwave receiver

The CommRadio CR-1

The CommRadio CR-1

US-based CommRadio is introducing a new tabletop, SDR-based, shortwave receiver this year: the CR-1. Their website has a few specifications and the video I’ve embedded below.

The CR-1 receives the full medium wave and shortwave spectrum (.5-30 MHz), plus some portions of VHF and UHF (FM broadcast band, Aircraft, Marine, NOAA weather radio, GMRS and FRS services).

The receiver architecture is a dual conversion super-heterodyne design with low-IF , I-Q digital sampling, 16 bit DSP with digital audio CODEC.  Their website also mentions DSP algorithms for all demodulation: DSB-AM, SSB, CW, WBFM, NBFM and channel filtering.

Other impressive features:

  • Can be powered from USB or a 6-18 VDC power source (from a separate 2.1mm jack).  The CR-1 possibly has the most flexible power source I’ve ever seen in a shortwave receiver!
  • The knobs are black anodized machined aluminium and front panel is powder coated machined aluminium; case is 20 gauge powder coated steel
  • Three antenna inputs
    • BNC for HF/MW
    • 3.5 mm audio jack (rated at 1000 Ohm, for roll-up antennas or telescoping whip),
    • BNC for VHF and UHF
  • Very portable size!

Full specs are available on their website: commradio.com

We will also keep you posted with any future updates.

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The new Degen DE1129A sports RDS, but is there really a version with keypad?

Thanks to a tip from the Herculodge, I discovered the DE1129A: a version of the recently reviewed Degen DE1129 with RDS. RDS is a very useful feature–especially for instant FM station ID on the go.

The DE1129A is available from Anon, a trusted Degen distributor from Hong Kong, on eBay. I have purchased from them before and have been very pleased with their service. Click here to view their listings.

If you’ve been sitting on the fence about purchasing the DE1129, perhaps RDS will sway you toward purchasing this portable radio with integrated digital recording and playback.

Frankly, I was unimpressed by the DE1129. Though the radio has very good FM reception and an impressive little speaker with bass response,  I believe the majority of shortwave and medium wave radio listeners would be upset with its overall performance.  I can’t imagine that Degen’s updates would bring dramatically improved performance on the shortwave and mediumwave bands. If nothing else, the lack of a number pad to directly input frequencies, would put me off. Cruising through the shortwave bands at slow 5kHz steps with noted muting between frequencies make band-scanning a chore on the DE1129.

According to TecsunRadio.com, this image was altered by Degen to show what the DE1129 would look like with a number pad. It’s obvious that the image has been altered by Photoshop or another graphics application.

DE1129 Number Keypad?

Speaking of a number pad…earlier this year, TecsunRadio.com told me that there would soon be a version of the DE1129 with a number keypad.  They published a prototype image (see right). When I first saw this image, I could instantly see that it had been Photoshopped; obvious use of cloning tools and the fact that the number pad characters are not in alignment with the buttons really stand out. Still, for a prototype image, it gives you a good sense of what the final product will look like.

Within weeks, I started noticing the keypad version of the DE1129 appearing in search results on eBay and had assumed it was in production.

This eBay seller shows a version of the DE1129 with number pad, but the image is the Photoshopped image (see above) released from Degen earlier this year.

This morning, I opened an eBay listing of the DE1129 keypad version (see image on right) from pbuying.usa. Their listing clearly shows the same Photoshopped image from above. I then noticed that neither the product description nor any other image they feature indicates a number pad on the DE1129. I wrote a message to them this morning asking for clarification and will update this post with their response.

UPDATEpbuying.usa confirmed that his radio does not have a number pad and was apologetic and thankful that it was pointed out. The image has been removed.

I mention this as a note of caution: On eBay, you should always confirm any discrepencies before purchasing.  Though you could rightfully return the radio and get a refund, return shipping to Hong Kong/China (which you would pay for) could be in excess of $20-25 US.

By the way, though the addition of a number keypad on the DE1129 would make this radio at least 50% more usable, it would not sway me to recommend it because receiver performance is so mediocre. Check out my other review notes here.

I’m very curious if any SWLing Post readers have actually received a keypad version of the DE1129–please comment!

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The Degen DE32 combines analog styling with MP3 features

The Degen DE32

I just ordered the Degen DE32–a new addition to the Degen shortwave product line. The DE32 is unique in that it has a (nearly retro) analog radio dial for tuning across the FM/AM/Shortwave bands, yet features MP3 playback.

Details are a bit scarce, but I have to assume that this is an analog radio as I see no mention of DSP in the description. (Though building on the DE321’s DSP chip could make sense.) It appears that MP3 recordings can be played back from an SD card and/or potentially from internal memory. Since there’s no digital display, sorting through recordings will be similar to using the iPod shuffle.

At $27 US shipped from Hong Kong, it’s certainly affordable, and my expectations will be adjusted accordingly. Still, I’m eager to see what this little radio has to offer. Check back as I will publish a review soon–simply follow the tag: DE32.

Thanks, Michael, for bringing this little radio to my attention!

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