Category Archives: FM

Update: Sangean DT-160CL v Sony SRF-39FP

Sangean_DT-160CL_21

It’s been thirty seven hours since I started the Sangean DT-160CL versus Sony SRF-39FP endurance test and both radio are still going strong.

Sangean-DT-160CL_and_Sony-SRF-39FP

So far, the DT-160CL’s battery indicator still shows full voltage. The SRF-39FP has no battery indicator, but through experience I know it’s nowhere close to quitting.

I’ve spent some time tuning both radios and comparing them on mediumwave/AM and FM.

The DT-160CL does an amazing job on the FM band and has a definite edge on the SRF-39FP.

On AM, however, the SRF-39FP seems to wipe the floor with the DT-160CL.

In truth, though, it’s tough to evaluate performance and audio while the endurance test is ongoing, so I should reserve judgement. During the battery endurance test, I’m using the supplied earbuds from both radios. The Sangean’s earbuds a fairly large and uncomfortable in the ear–they make the audio sound hollow and too focused on mid-range tones. In truth it’s pretty much the same thing for the 39FP’s buds.

I can’t wait to use some of my proper in-ear buds on the DT-160CL and evaluate its audio characteristics on AM and FM.

Follow this review thread by bookmarking the following tag: Sangean DT-160CL v Sony SRF-39FP

Spread the radio love

Paul’s review of the Kaito KA108

Many thanks to SWLing Post contributor, Paul Dobosz (K8PD) who shares his review of the Kaito KA108. Paul originally wrote this for the Michigan Area Radio Enthusiasts and has kindly allowed us to post it here:


Kaito KA-108 Review

Kaito-KA108-AM

by Paul Dobosz (K8PD)

Kaito just introduced a pocket sized DSP based MW/SW/FM receiver with some interesting features missing in other SW receivers its size. I just got my hands on one for the first time a couple of months ago and am getting familiar with its features, performance, and quirks. I first saw the KA-108 at the Consumer Electronics Show in early January when I visited the Kaito booth and spoke with Walter about their newest radios. There are no schematics included with the KA-108 and I haven’t cracked open the case but based on the functionality, size, and price point it appears that the KA-108 utilizes the now common DSP based receiver architecture found in most of the new portable radios.

First of all, a brief run down on the features and functions of this compact little radio.

  1. Compact Size –  5.5” x 3.25” x 1.1” Weight 9 oz
  2. Frequency Coverage – MW: 520 – 1710 KHz, FM: 64 – 108 Mhz, SW: 2300 – 23000 KHz
  3. Memories – 400 (100 MW, 100 FM, 200 SW)
  4. Power – BC-5 Rechargeable LiPo 3.7V battery
  5. Other Features
    • Timer/Clock radio dual alarm function
    • MP3 Timer record & playback to/from a Micro SD card
    • Standard USB port that accepts a thumb drive.
    • Exceptional Bass Response for travel sized radio
    • “Auto Store” feature will scan and store frequencies
    • Battery charging via micro USB (no wall wart to carry)
    • Audio “line In” can be used as computer or MP3 speaker

Most radios have their good and not so good points and the Kaito KA-108 is no exception. Here is a rundown on the LA-108’s “HITS & MISSES”

The HITS

This radio is small and lightweight which makes it an ideal travel radio.  The control layout features a full keyboard for frequency entry as well as up and down keys that will search for signals when held down.  The fit and finish are excellent and the keys have good positive tactile feel.  There are two rocker switches, one for volume up/down and the other for band/mode selection.  The radio comes with a decent user manual and quick start guide.  The manual’s English is a little awkward in places but is fully understandable.

The backlit LCD display is brightly lit with large white numbers on a blue background.  It is easy for older eyes to read, even without glasses.  The signal strength meter is actually fairly useful which is rare for radios at this price point.  

The standard frequency step is matched to channel spacing for the band in use with exception of the FM band which tunes in 100 KHz increments instead of the US standard 200KHz steps when the frequency range is set to the North American band.  The FM band can be set up to tune all the way down to 64 MHz if desired but since TV has migrated from analog to digital the usefulness of that coverage is minimal for North American users.  AM is 9 or 10 KHz step capable with a frequency range to match all parts of the world.  In addition to the standard frequency steps, the thumbwheel encoder can be used to fine adjust the frequency between the standard increments in 1 KHz steps.

The MP3 playback is very pleasant to listen to.  I tested it with several different genres of music with consistently good sound quality.  I haven’t tried the recording function yet but it is definitely a nice feature, especially in such a compact package.  The KA-108 has a standard USB input (not mini or micro) behind a sliding door on top of the radio for external memory devices like thumb drives.  MP3s can be played and audio recorded to/from this port as well as the Micro SD card slot aside of it.   I’m also hopeful that the USB port may be capable of upgrading the radio firmware in the field.   If not, that’s another feature that Kaito should definitely consider for future versions of the KA-108.  (More on that later)

One feature I really like is the rotary tuning thumbwheel encoder on the side of the radio.  It has a light detent feel that allows you to manually tune the radio in 1 KHz steps to easily allow you to move to one side of a signal.  Frequency entry via the numeric keyboard is straight forward and intuitive with exception of the non-standard location of the zero key to the right of the bottom row of the numeric keys.  

The FM reception is excellent with bass response that makes you wonder how such a mellow sound comes out of such a small box.  Despite the 1.5” speaker, the audio has lots of bass and lacks the “tinny “sound of most travel portables with small speakers.  It plays loudly without distortion.

MW reception was typical for a radio with limited space for a small ferrite antenna and I was able to hear the usual SWBC stations and time/frequency UTE’s on the HF bands.  SW reception using just the 20” whip was just OK with easily listenable strong signals found on most of the active SW bands 2MHz and above.  The KA-108 is AM only on the HF bands (no SSB or CW).  There are some quirks with the MW and AM reception that I’ll cover in the MISSES section of this review

The MISSES

I never thought I would complain about a portable receiver with a “too tight” a bandpass filter but the KA-108 is a first.  The bandpass filter for MW &SW are extremely narrow which when coupled with the KA108’s exceptionally strong bass response, reduces the intelligibility of the received audio on the MW and Shortwave bands.  I have been able to mitigate the situation a little bit acoustically by covering a portion of the speaker grille with my hand or placing a small tube in front of it which seems to attenuate the bass and improve the overall audio response but the audio is still lacking in the higher frequencies that make things like music and the human voice more intelligible.  

Tuning 1-2 KHz off of the carrier frequency with the thumbwheel helped improve things a little bit similar to the way you might use IF shift on a high end tabletop receiver.  I also noticed that stronger stations that have a signal that spills further down the filter’s skirts had better audio response than those that lacked sufficient strength to spill over the filter response curve. I am hopeful that Kaito will offer a firmware upgrade to open up the bandwidth.  If the USB port used to play thumb drives has hooks into the radio’s CPU then it might be possible to open up the bandwidth and improve the MW and SW audio without cracking open the radio case to re-flash the CPU or make a hardware change.  The bandwidth issue is the largest single miss for the KA-108 in my opinion

I found a few buzzes and whistles on the MW band and you can hear the CPU clock oscillator strongly at 12MHz.  I haven’t looked inside of the radio yet but I would imagine that some of the MW noise can be tamed with a bit of internal shielding.  

I also found the AGC setting to be a bit too abrupt, jumping up and down in almost a step function with a signal whose level was fluctuating quite a bit.  That’s another minor software adjustment to consider for the next edition.

Due to the KA-108’s small size, the whip antenna is rather short (only about 20”) which means the front end must have a lot of gain leaving it more vulnerable to overload.  I was able to receive a the stronger SWBC stations while sitting in the middle of my house but I also heard another faint signal under the SW stations.  The interfering signal turned out to be a local 1KW AM station on 145o KHz whose transmitter is about 4 miles from my home.  It was present in the background while listening to SWBC and was heard standalone on its 2nd and 3rd harmonics which were most likely generated internally due to the high gain front end.  The short SW antenna does create the need for higher front end gain but should be accompanied by a high pass filter behind the SW whip antenna or at least a 10dB attenuator.  Either or both of those features would reduce AM BCB intrusion while listening to SWBC.  

In the coming weeks I’d like to do some parametric measurements on the KA-108 and will also see how it behaves with a longer antenna and antenna tuner with low pass filter ahead of it.  That should be a good test to see if a simple filter can eliminate the AM intrusion.  Improvements to widen the AM/SW filter bandwidth and reduce the AM overload should be high priority improvements for the next version of the KA-108.  

Summing It Up

I found the KA-108 easy to operate as I’ve explored the AM/SW/FM and MP3 operating modes and it’s a nice sized radio for casual listening when I’m at home or to take with me as I travel for use as an alarm clock, music player, and radio in one compact package.  

The KA-108 has potential with a few software and hardware tweaks. Fixing the MW/SW bandwidth is #1.  A simple high pass filter that rolls off just above the AM broadcast band behind  the SW whip antenna is #2.  I can live with a few buzzes and tones but why not fix them with a little inexpensive shielding while adding the other fixes.  

The KA-108 will never match the performance of tabletop or lunchbox sized portables, but if you’re looking for a nice little radio that will almost fit in your shirt pocket with nothing more than a micro USB cable to tote along for battery charging, and a radio that sounds twice its size, this radio fits the bill.  I hope that Kaito will address the issues I’ve noted with future software/hardware revisions to improve the performance of the KA-108 and maybe even offer a way for current owners to field upgrade their radios.  


That’s a thoughtful and fair assessment of the Kaito KA108, Paul. It’s a reminder that, with a few strategic tweaks, the KA108 could be a great little portable. Thank you for sharing your review with us! 

Spread the radio love

The Sangean HDR-16: Dan takes notice

HDR-16

Many thanks to SWLing Post contributor, Dan Hawkins, who comments in reply to our post about the Sangean HDR-18:

Darn. Just when you thought you read a review of the latest Sangean radio another one comes out. I have yet to find a review of the Sangean HDR-16.

[The] HDR-16 is a portable AM-FM HD radio with stereo speakers. Runs on household AC power or four C cells. At 10? long this is not exactly pocket sized but small enough for beach or nightstand duty. I wonder how fast it eats up the C batteries?

I don’t think HDR-16 will hit the shelves until mid-September.

Dan then followed up with pre-order prices:

That Adorama price is correct! I just noticed that Universal Radio also has a pre-order price of $99.99.

$100 US is not a terrible price for a quality portable AM/FM stereo analog/digital radio. Indeed, that may be the best price I’ve seen for that particular feature set. I bet four C cells will power it for quite a long time, too.

At second glance, the HDR-16 has an impressive feature list (via Sangean):

  • HD Radio digital and analog AM / FM-Stereo reception
  • 10 Memory Presets (5 FM, 5 AM)
  • PAD (Program Associated Data) Service
  • Support for Emergency Alerts Function
  • Automatic Multicast Re-Configuration
  • Automatic Simulcast Re-Configuration
  • Auto Ensemble Seek
  • Real Time Clock and Date with Alarm and Sleep Function
  • 2 Alarm Timer by Radio, Buzzer
  • HWS (Humane Wake System) Buzzer and Radio
  • Snooze Function
  • Tone & Bass Control
  • Information Display for Channel Frequency, Call Sign, Radio Text, Audio Mode, Service
  • Mode, Signal Quality and Clock Time
  • Easy to Read LCD Display with Backlight
  • Battery Low LED Indication
  • Auxiliary Input for Additional Audio Sources
  • Record Output for Connecting to Hi-Fi System or Recording from Audio Program
  • I/O Jacks: DC In, Line-Out (Rec-Out), Aux-In, Headphone and HD / FM Rod Antenna

The feature set sounds like something that would appeal to my buddy Jeff McMahon. He’s been looking for a bedside radio for quite a while. This one has a “Human Wake System”–perhaps meaning the alarm gradually increases the volume? Of course, I question if the HDR-16 will perform well on the AM broadcast band–I suppose it depends on how well the receiver is shielded from CPU noises, etc.

I might be tempted to grab one of these and test it. I like the price tag much better than that of the HDR-18, though I’m not sure its audio fidelity will be comparable. While I doubt I can receive an HD broadcast from my home, it might be fun trying.

Have any SWLing Post readers pre-ordered the HDR-16? Care to do a review?

Spread the radio love

Unboxing the Sangean DT-160CL and setting up an endurance test

Sangean_DT-160CL_1

Yesterday, I received my Sangean DT-160CL–the correctional version of the DT-160–from AmazonSangean_DT-160CL_2

Even though the Amazon product page showed 5 units in stock on July 29, and though I get free two day shipping via Amazon Prime, my  DT-160CL took four business days to arrive. Out of curiosity more than anything else, I asked Amazon why the delivery would take four business days instead of two my Prime membership promises.

Amazon replied that stock levels weren’t correctly displayed on the product page at time of ordering since the DT-160CL was selling so quickly.
Sangean_DT-160CL_3

Amazon apologized for the confusion and–though I wasn’t seeking one at all–they issued a $10 credit!  Wow–thanks, Amazon!

Sangean_DT-160CL_4

The DT-160CL is supplied with a set of clear earbuds, an owner’s manual and a warranty card.

Sangean_DT-160CL_6

Sangean_DT-160CL_8

The Sangean DT-160CL is very close in size to the venerable Sony SRF-39FP–the SRF-39FP has slightly more depth and a little less height.

Sangean_DT-160CL_16

The DT-160CL’s clear case, while sturdy, feels marginally more supple than that of the Sony SRF-39FP.  Though I haven’t been able to confirm, the DT-160CL chassis feels like a polypropylene product while the SRD-39FP feels like polycarbonate. From the photos above, one can see that the DT-160CL’s case is a touch more opaque/cloudy than that of the SRF-39FP.Sangean_DT-160CL_10

Endurance test

Other than overall receiver performance, I’m very interested in battery performance since Sangean touts a 100 hour run time on two AA batteries (for the DT-160 series).

Having used the Sony SRF-39FP for a few years, I can attest to an incredibly long battery life as well. No doubt, those purchasing the DT-160CL for use in a correctional facility place a lot of value on battery performance.

Sangean_DT-160CL_13

I stopped by our local CVS pharmacy to purchase fresh alkaline batteries for both radios. CVS had a sale on their own (generic) version of the Duracell Quantum alkaline batteries.  I purchased a set and popped them in both radios.

Sangean_DT-160CL_14

The DT-160CL has a hinged battery cover and holds two AA cells.

Sangean_DT-160CL_15 Sangean_DT-160CL_16

The SRF-39FP only needs one AA battery.

Sangean_DT-160CL_17

After plugging in the supplied clear ear buds, I turned both radios on and adjusted the volume to a comfortable, moderate listening level.

I matched the audio levels for both units and tuned to my favorite classic rock FM station: WXRC 95.7 MHz.

WXRC is a fantastic benchmark FM station as it’s about 130 miles away (as the crow flies), but has an exceptional propagation footprint. My best FM receivers, when ideally-placed in my home, and telescoping antenna fully-extended, can receive WXRC in stereo lock with no interference.

Sangean_DT-160CL_21

I’m happy to report that both the DT-160CL and the SRF-39FP can receive WXRC quite easily when I’m holding the unit in my hand and standing in a part of my house where the signal is strongest.

In truth, I didn’t have time to evaluate receiver performance last night–I was more eager to begin the endurance test which, by the way, officially started yesterday (August 3, 2016) at 22:30 UTC.

I can’t wait to discover which radio will win!

Follow this review thread by bookmarking the following tag: Sangean DT-160CL v Sony SRF-39FP

Spread the radio love

Jeff reviews the Sangean DT-160

SAngean-DT-160-Jeff-McMahon

My buddy, Jeff McMahon, has just published a review of the Sangean DT-160 on his blog, the Herculodge. It’s well-worth reading if you’re considering a DT-160.

Overall, Jeff believes the DT-160 is a keeper and he’s very pleased with FM performance. He notes one major annoyance:

“The toggle tuning wheel on the radio’s right side. You hold it to set the time. You wait for the hour number to flash, then set with preset 1. You do the same for the minute. You have to click downwards to scroll through the numbers. The toggle feel is awkward.

You use the same toggle for tuning, and here I really dislike the tune/set jog wheel because it’s impossible to scroll through the stations without prompting the set button to flash. It’s like my wife doesn’t like me brushing my teeth in the shower. Don’t mix the tuning with the time set. They belong in separate chambers, so to speak.”

Wow–what a poor design decision on the part of Sangean. I suppose they did this to eliminate the need for extra clock set buttons?  Still.

But as Jeff says, once presets are assigned, no more tuning woes.

Click here to read Jeff’s DT-160 review.

On a side note, I’m looking forward to receiving my DT-160CL later this week. Since I think the “CL” version lack a clock, I’m curious if tuning will be more pleasant.

Spread the radio love

Wi-Fi Radio Primer Part 1: Radio station aggregators and alternatives

I originally wrote this three-part WiFi radio primer and review series for the April, May and June issues of The Spectrum Monitor magazine.  Each part of this series will be posted with the tag: WiFi Radio Primer. I hope you enjoy Part 1 below:


The Grace Digital Mondo

I’ve always been a hard-core shortwave radio listener.  I like the tactile experience of turning the knobs of the shortwave, tuning in stations across the globe. So when online listening became popular, it never occurred to me to engage in this new, seemingly lesser sport; I put trying it on the back burner, and continued to enjoy my shortwave. After all, I rationalized, why listen to anything other than an actual radio?

Then, at the 2012 Winter SWL Fest, an excellent presentation on the merits and technologies behind Wi-Fi radio intrigued me. I found myself downloading and installing the Pro version of the TuneIn radio app. On the twelve-hour drive back home from the Fest, I tuned to local radio stations across the world via the TuneIn app. I had to admit, it was a pretty powerful listening experience…one I could easily get used to.

And get used to it, I did.  That’s when I realized that streaming radio stations over the Internet is, essentially, content DXing. For while there isn’t any particular skill required to listen to Internet radio, it offers convenient listening opportunities I wouldn’t otherwise have, and without the rigors of travel.  For example, from my home in the southeastern US, I can listen to a station in Perth, Australia––one local to that area and one that has never been, nor is likely to be, on shortwave. I found it frankly addictive.

uneIn's iPad app has a beautiful, simple user interface. If you purchase the TuneIn Pro version ($9.99 for the iPad) banner ads disappear.

TuneIn’s iPad app has a beautiful, simple user interface. If you purchase the TuneIn Pro version ($9.99 for the iPad) banner ads disappear.

Since 2012, I’ve relied on my TuneIn app and either a tablet or smartphone to listen to stations. I found I could hook up my tablet to a portable powered speaker, an SStran AM transmitter, or even a whole-house stereo, and enjoy music from all over the world.

There was only one problem, however: while they enjoyed the music, my busy family didn’t appreciate the complexity of my radio set-up. The truth is, it did require warming up a lot of equipment––most of which is in my shack––not to mention making sure connections were in place, logging in, launching apps, and then searching for stations.  One day, referencing the cobbler’s children (who, in the old adage, go without shoes), my wife asked in exasperation, “Isn’t there some way to make listening to music around here just a little more accessible to all of us?  Maybe something we could just turn on––?”

The Quest

Thus began my quest to purchase a dedicated Wi-Fi Radio, an Internet appliance with a singular purpose:  to play online radio stations from across the globe.  Simply. 

Fortunately, I reasoned, the process of choosing such a radio was likely to be just as simple.  I mean, how hard could it be?  I was already familiar enough with the wider radio landscape to know that these radios range from about $110 to $250 in price, and that they’re widely available from a number of radio and online retailers. Moreover, I’m lucky enough to count among my friends some of the most knowledgeable experts on the topic of Wi-Fi radio––Rob De Santos, Richard Cuff, and last but not least, John Figliozzi, author of the recently updated Worldwide Listening Guide––all of whom had jointly presented at that 2012 Fest that ignited my interest in WiFi radio. No doubt, I thought, a group-email to these experts would rapidly solve our dilemma.

Boy, was I ever wrong.

My expert friends all had excellent advice, but made me aware that there’s much more involved to choosing a WiFi radio than simply selecting the best-priced or the latest model. Firstly, they advised, it’s very important to identify a good station aggregator, and then select a good radio that relies upon it.

Radio Station Aggregators

WiFi radios are Internet appliances with the ability to stream Internet content, but they’re not endowed with the ability to seek out stations in the wild and import their audio streams. WiFi radios, I soon learned, rely on “aggregators,” or online databases of curated links to radio stations.

In the early days of WiFi radio, there were several models of radios on the market that linked to proprietary aggregators, many of which eventually closed down. When a WiFi radio loses its ability to link to an aggregator, it becomes no more than a pricey paperweight, especially if the WiFi radio doesn’t have traditional AM/FM reception as a backup.

The CC WiFi uses the popular Reciva aggregator.

The CC WiFi radio uses the popular Reciva aggregator.

So not only does an aggregator need to have some longevity, it also needs to be actively curated. This means having to staff actual human beings to help manage additions, deletions, and changes to the large database of broadcasters. This is necessary because radio stations and radio networks often change their streaming server address or format with very little notice. Good aggregators have methods that allow for broadcasters and listeners to submit such changes for approval so that streaming can be fully reestablished across the network of subscribing WiFi radios.

It should be noted as well that some aggregators may not support the protocol broadcasters choose to use for their streams. So, prior to purchasing a radio, buyers should attempt an Internet search to make sure their favorite broadcasters are listed among those offered by the radio’s aggregator. This being said, buyers must be aware that a number of aggregators require a username and password to search through their listings, thus limiting any pre-purchase search.

Types of Aggregators

Aggregators fall into two categories: those that are radio-dependent, and those that are not.

Radio-dependent aggregators are those that you can use only if you own a compatible device. For example, to stream from the Reciva system, you must first own a Reciva-connected WiFi radio. With your radio model/serial number in hand, you’ll be able to create a login on the Reciva system. From there, you can create lists of favorite stations and manage them.  If you don’t own a Reciva radio, however, you can’t log into the Reciva database. The same applies to Frontier Silicon (Sangean), as well as Pure.

The dominant open (or, non radio-dependent) aggregator on the market as of this publication is TuneIn Radio. TuneIn does not require a compliant device; you can create an account with TuneIn and stream from it via your computer, tablet, or smartphone. And of course, there are now radios that link to TuneIn as their aggregator.

VTuner is another open aggregator that can be explored prior to purchasing a compatible WiFi radio. Note that in this WiFi primer we will not explore the VTuner aggregator, however it will be covered in the upcoming review of the Como Audio Solo.

Following is a list of the most popular aggregators with a brief description of each.

Radio-dependent Aggregators

Reciva (https://radios.reciva.com/)

Reciva's station search function is more functional than that of Frontier Silicon. I can typically find a station by searching by call sign. When that doesn't work--as in this case when I searched for CKUT--I simply searched by city.

Reciva’s station search function is more functional than that of Frontier Silicon. I can typically find a station by searching by call sign. When that doesn’t work–as in this case when I searched for CKUT–I simply searched by city.

[Important Update: Reciva has announced that they are closing for business on April 30, 2021. Do not buy a new or used WiFi radio that relies on the Reciva aggregator as it will not function properly without the service.]

The Reciva aggregator has been around for many years. At one point, it was the most user-friendly and most actively curated aggregator on the market. Today, Reciva is still the most popular choice in a WiFi radio aggregator.

I find the Reciva website easy to use, even if its design and user-interface are slightly outdated. Reciva also seems to be relatively quick to respond to stream-server changes. When my favorite Internet radio station changed streaming servers last year, Reciva was quick to update the link. Reciva also allows you to build folders of favorite stations that make it easy for you to navigate with your radio. Moreover, Reciva has an advanced search function that also makes finding particular stations relatively easy.

Frontier Silicon (http://www.wifiradiofrontier.com/)

Frontier Silicon's website is clean, simple and responsive. Their "My Favourites" page makes organizing your many station memories an intuitive process.

Frontier Silicon’s website is clean, simple and responsive. Their “My Favourites” page makes organizing your many station memories an intuitive process.

As far as I can tell, Sangean is the only WiFi radio manufacturer using the Frontier Silicon aggregator. The Frontier Silicon interface is very basic, but gets the job done. Adding stations to a playlist also seems to be very straightforward.

With that said, however, if you chose the option of browsing stations by category––say, by language or genre––Frontier Silicon doesn’t allow you to search within the category’s results for specificity. For example, I recently wanted to search for new French language stations in a certain town in France. Once I had chosen the French language, then the country, I was presented with a list of over 1700 stations arranged alphabetically with twenty results per page, and with no way to search among them. It was frustratingly imprecise. Not only could I not find the town, but the station list was simply too broad, too unwieldy, to navigate.

Frontier Silicon’s database of information can be incomplete––and inconsistent.  Nonetheless, there are some tricks to help you find stations; for example, an online search by call sign and name may lead you to the desired result (then searching Frontier Silicon for other station keywords). A quick Internet search can also help you find regional broadcasters.

Frontier Silicon provides an easy means by which to submit new stations and provide updated information, should your station change server locations, but one must be patient. For example, I submitted a station’s updated URL to Frontier Silicon; it took them almost a week to update the stream, whereas Reciva took only a day or so to do the same.

All in all, the Frontier Silicon platform, though more bare-bones than its competitors, does the trick and seems to work quite well.

Pure (http://www.pure.com/) (Untested)

purelogoThe manufacturer, Pure, also has their own aggregator for their radio product line. Since I didn’t test a Pure WiFi radio for this review, I haven’t tried their system. I do have two friends that tout the virtues of Pure’s radios as well as Pure’s aggregator, claiming superb customer service and overall product quality.

As Pure is a “closed” ecosystem, I suppose there could be concerns about their products should the company ever close its doors.  But the company’s strong consumer following makes this relatively unlikely. One pleased user of my acquaintance claimed that Pure is to WiFi radio what Apple is to computers––in other words, it’s a company that provides a quality product, excellent design, as well as a user-friendly interface. I can’t speak to this comparison.  But I do know that, also like Apple, Pure’s products top the market in terms of price:  their Pure Evoke F4 (without extra speaker or battery) retails for $225 – 250 US. To put this in perspective, the priciest radio I reviewed was purchased for $170.  So, clearly, Pure’s products can double the cost of their competitor’s.

Open Aggregators

TuneIn (http://tunein.com)

You don't have to own a WiFi radio to begin organizing your favorite streaming broadcasters. Simply create a free account at TuneIn Radio (http://TuneIn.com), search for and organize your favorites and changes will propagate to all of your TuneIn connected devices and apps.

Create a free account at TuneIn Radio (http://TuneIn.com), search for/organize your favorites and changes will propagate to all of your TuneIn connected devices and apps.

I have been using the TuneIn system for at least four years. It is, without doubt, the most user-friendly database of radio stations I’ve tested. TuneIn’s search functionality is exceptionally powerful; I’ve found that I can almost always locate a station in a matter of seconds. And of course, you can hone in on a favorite station by region and genre.

The TuneIn search screen.

The TuneIn search screen.

The great thing about Tunein is that you don’t have to own an Internet device to use it. You can use a free account to organize your favorite stations, which will then propagate to the TuneIn app on your phone or tablet––as well as to your web browser, should you decide to listen on your computer.

Overall, the TuneIn user interface is pleasant and responsive; in short, it’s my favorite among the aggregators I tested.

Live365_logoLive365

Live 365––an aggregator with some history, which may very well have been in existence longer than any other––specializes in Internet stations rather than radio broadcasters who also happen to stream on the Internet.

[Update] Sadly, on February 1 st , 2016, Live365 closed for business. It is unlikely another company will pick up the reigns.

Why did Live365 close shop? Here’s what Forbes.com suggests:

“It is rumored that the service is being forced into early retirement because of new royalty rates that digital radio producers now need to adhere to. Late in 2015, the Copyright Royalty Board handed down its decision about what internet radio services will need to pay per stream, and it apparently hurt Live365 so much that it can no longer afford for the rights to play music.”

Among WiFi radios, Live 365 functions as an “add on” rather than sole default aggregator. If your radio has Live 365 functionality, the loss of service will have no effect on other radio functions.

Network-Specific Aggregators and services

iHeart-Radio-LogoiHeart Radio: iHeartRadio is an Internet radio platform owned by iHeartMedia, Inc. The iHeart radio app functions as both a radio network for the 800+ iHeart radio stations around the world and also as a music recommendation system. There are no WiFi radios that use iHeart as a default aggregator, but there are several that include iHeart as a featured app.

SiriusXM (paid): SiriusXM is a satellite radio subscription service; subscribers at a certain subscription level can also stream 130 channels over the Internet.

Music and other internet radio services

Spotify-LogoThere are a number of Internet radio services that are not curated.  Many of these services are adaptive platforms that create impromptu radio “stations” based on your preferences. These services may be included with a WiFi radio, but most are used in conjunction with smartphone apps, among them, Pandora, Slacker, LastFM, Spotify, and Aupeo. Note these services are outside the scope of this review for the simple reason that, as a content DXer, my interest is on actual radio stations rather than music services.

A final note about aggregators

There are likely other aggregators and services in existence that I’ve omitted from this review. Again, I focused on the better-known aggregators and services, most of which are considered relatively stable and well-supported by both manufacturers and WiFi radio enthusiasts.

In conclusion, I’ll say once more:  it’s important to check whether a particular aggregator supports your favorite radio station(s) and broadcast network(s) prior to purchasing the adjunct radio. And if it doesn’t, you need not necessarily rule out the system altogether; often an aggregator will have the capability to add the preferred station(s), so this is also worth investigating. The obvious exceptions are stations using streaming formats not supported by your radio or your aggregator (or both). In short, do check before you buy.

I’ve been testing WiFi radios supported by Reciva, Frontier Silicon, and TuneIn, and can say that I haven’t been displeased with any of them. All seem to support my favorite stations and networks.

Alternatives to WiFi radios

The Roku 3

The Roku 3

Before we look at the WiFi radios on the market in Part 2 and 3 of this feature––coming up in the coming weeks––I should note that there are certainly cheaper alternatives to a dedicated WiFi Radio, especially if you already own a device that can play Internet radio content. By and large, smartphones, tablets, as well as PCs offer the most convenient access to online broadcast streaming, though even some TVs and video streaming devices (Roku, AppleTV, Amazon’s Fire TV Stick, Google’s Chromecast, and so forth) contain basic audio streaming apps.

Smartphones

Since the majority of us have a smartphone or tablet, you’ll find this provides a convenient and readily accessible means by which to enjoy the functionality of a portable WiFi radio.  If you haven’t already done so, the process couldn’t be easier:  simply download the TuneIn app (Android: http://bit.ly/1gB1DAh and iOS: http://apple.co/1O9aZxI).

Though TuneIn offers a monthly premium plan (primarily for those who want coverage of sporting events), even the free plan unlocks the full database of radio stations across the globe.

With the app installed, you can plug in headphones and tune in thousands of stations. If you want improved audio, simply plug in an external amplified speaker, or connect a speaker via BlueTooth.

iPodTouch-TuneIn

The app is lightweight and doesn’t rob you of much of your device’s resources. And of course, it can play in the background as you do other things.  As a bonus, TuneIn can stream thousands of podcasts––including those from the Shortwave Radio Audio Archive. There’s a curious pleasure in riding a train or subway while listening to an archived off-air recording of Radio Moscow from the 1970s!

While we’re talking about apps, there’s also an excellent one written by shortwave listener, Steven Clift, called the 1 Radio News app. At the moment, it’s only available for Android devices. There’s also a free version with some banner ads and a Pro version ($.99) with no ads and more stations.

WiFi radio?  We’re hooked

For many––myself included––this was my WiFI set-up for many years:  a smartphone and headphones, plus a tablet hooked up to a powered portable speaker. I never felt the need to have a dedicated Internet appliance for tuning radios stations…until, that is, my family needed something more, launching this investigation into the world of WiFi radio.

Now, having experienced the benefits of dedicated WiFi radio, I don’t think I’d choose to be without one. It’s just incredibly convenient to tune in a station on a simple device which has as its sole purpose streaming audio. All of the units I reviewed have excellent audio via the internal speaker, too.

Best yet, I’ve now found a radio that my entire family––yes, even my wife––enjoys. With the touch of a button or a voice command, they now tune to favorite stations in Brazil, Africa, Europe, or Canada.  And our house is now full of their music choices, too.

Coming up in the next two issues: Parts 2 and 3 which include reviews of four popular WiFi radios.

I will post each part of this three part series with the tag: WiFi Radio Primer.

Spread the radio love

Sangean DT-160CL: The correctional version of the DT-160

Sangean-DT-160CL

After publishing a post referencing the new Sangean DT-160 AM/FM radio, a number of readers noticed that Sangean has also produced a clear-cased version of the DT-160: model number DT-160CL.

This version, no doubt, was designed for sale in prison commissaries and is probably seen as a replacement for the venerable Sony SRF-39FP (which has been discontinued). The SRF-39FP is widely regarded as a superb mediumwave (AM) DXing ultralight.

In reference to the Sangean DT-160CL, SWLing Post contributor, Dan Hawkins recently commented:

Which begs the question: is this prison-quality radio really that good? I ask the question only because a good AM-FM prison radio must perform exceptionally well behind formidable prison walls. After all, nearly one percent of the US population is currently behind bars (down slightly from 2008) which is a substantial pocket radio market. Prison radios are typical sold in prison commissaries and prisons are big business nowadays. How does this radio compare to the famous Sony SRF-39FP? Inquiring minds want to know. Sangean is legendary for build quality. Does it beat the Sony?

After reading Dan’s comment, I couldn’t help but order the DT-160CL from Amazon.

The Sony SRF-39FP

The Sony SRF-39FP

I, too, am very curious how it will compare with the SRF-39FP in terms of battery longevity, audio fidelity, and overall performance.

I suspect the SRF-39FP will remain dominant on the AM broadcast band and possibly have better battery life (keep in mind, the SRF-39FP only uses one AA battery–the DT-160CL requires two).

As soon as I receive the DT-160CL (Amazon notes delivery will be Wednesday, August 3), I’ll pop fresh batteries in the DT-160CL and the Sony SRF-39FP, set them to the same volume level and frequency, then allow them to run continuously until the batteries are depleted. Of course, I’ll use the opportunity to compare performance on both AM and FM.

I’ll post comparison updates with the tag: Sangean DT-160CL v Sony SRF-39FP.

Spread the radio love