Monthly Archives: May 2014

Ken points out where Melson series derived design

Melson and Grundig Satellit 500

The knobs on the left side of the Melson M7 and S8 are fake.

SWLing Post reader, Ken, commented that the “faux” knobs on the Melson S8 were derived from the Grundig Satellit 500.

Ken has taken a photo of the two radios together (above).

Note that the knobs on the left side of the Melson S8 are fake (right).

Read the Melson S8 review, posted yesterday, by clicking here.

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A review of the Melson S8 shortwave radio

Melson-S8-v1The radio manufacturer, Melson, caught my attention a couple of years ago when it released the Melson M7–an AM/FM radio with a built-in MicroSD MP3 player. It wasn’t that an AM/FM/MP3 combo radio was that unique or novel, rather, what impressed me most was that the M7 delivered unexpectedly robust audio from its built-in speaker. I purchased an M7 last year and found that the little portable could easily fill the average-sized room with clear, rich audio, a truly superlative feature.

Other than its audio, however, the radio was fairly standard. My Melson M7 had good AM (medium wave) and FM sensitivity–well, at least on par with most other DSP portables in its price range. While the built-in MP3 player was basic, it was simple to use and functional. I loaded it with a MicroSD card filled with music and recordings, and put it to use as a mini-juke box of sorts. I didn’t expect more from that radio, or from its line.

Introducing the Melson S8

Melson-S8-1

The Melson S8 sports the same “faux knobs” of the Melson M7

But when I discovered that the newest portable in the Melson line, the Melson S8, could receive shortwave radio, I ordered one immediately. This time, I didn’t have the radio in mind for personal use; I hoped it might serve our non-profit, Ears To Our World. At ETOW, we take information-delivery devices into parts of the world that currently lack access to the Internet. Shortwave radio is our usual medium, and most recently, we’ve put into service pre-recorded content loaded onto MicroSD cards–a simple way to give school children months of educational and musical programming. I had hoped the S8 might just support this need.

Overview

The Melson S8 resembles its sibling, the Melson M7, in every respect–down to the quirky “faux knobs” on the left side of the radio. Overall, the chassis feels sturdy and the buttons have a tactile response, with enough resistance to keep them from becoming accidentally pressed when, for example, the radio is packed in a suitcase. For shortwave and FM listening, the built-in antenna is rather short but sturdy.

Fortunately, the S8 also sports that amazing speaker found in the M7–a speaker that uses an acoustic chamber to achieve excellent audio. Since the S8 also has an AUX-in jack, it can be plugged into a laptop’s headphone jack, reinventing the S8 as an amplified portable speaker.

Melson-S8-v4

The S8 has a small digital display with backlighting that turns on or off depending upon the lighting level. For example, if it’s outside in the sun, the photosensor will turn off the blue backlighting.

The controls are on the right side of the radio: the tuning knob, volume control, power button, MicroSD card slot, DC power input (mini USB), headphone jack, and AUX-in.

Both the tuning and volume knobs work smoothly, but don’t feel quite as sturdy as I would like. I’m not sure how well they would hold up to years of daily use. When turning the tuning knob, the action is not seamless; you’ll detect slight incremental “bumps” or pauses that coincide with the receiver’s tuning steps on any given band. The volume control, however, is smooth, much as one would expect of a traditional analog radio.

The S8 utilizes the new slim rechargeable battery pack found in some Degen and Grundig models. While I’m not a great fan of these battery packs, they do seem to perform reasonably well and allow for a thinner radio.

Performance

Melson-S8-v2When you first power up the Melson S8, if you have a MicroSD card inserted, it defaults to the MP3 playback mode and will begin playing the first MP3 on your card. You must press the light grey MODE button to cycle through the bands. The order is as follows: MP3 -> FM -> AM/MW -> SW1 -> SW2. I find this a bit annoying, since I’m primarily interested in the shortwave bands, thus must cycle through all the other modes before arriving at my selection. When powering up, I do wish Melson permitted the radio to default to the last mode used, a standard practice among portables.

Like the Melson M7, the Melson S8 has good AM (medium wave) and excellent FM sensitivity. If these are the two bands you listen to most, then you will be pleased with the excellent audio the S8 will deliver via its built-in speaker.

On shortwave, however, I’m disappointed by this radio. Most of the DSP radios I’ve tested have reasonable shortwave sensitivity and selectivity; I had hoped for the same from the S8. Unfortunately, the S8 generates internal noise that pollutes shortwave listening. While the noise is present on most bands, I find that it’s most pronounced on the popular 31 meter band.

There is the possibility that this noise might be specific to my particular unit. I spoke with a friend who didn’t notice the noise on his S8, but he lives in an area with a lot of RFI, which may have obscured the unit noise. So while I recognize that this might be a defect in my radio, I’m not interested enough in the S8 to order another for comparison. However, I would be curious if any SWLing Post readers have noticed this, and welcome your observations.

So that you’ll understand what I’m talking about with regards to the noise floor of the S8 (or at least my unit), below I include two audio clips of my Melson S8 and Tecsun PL-380, respectively, tuned to Radio Australia:

The Tecsun PL-380 on 9,580 kHz:

The Melson S8 on 9,580 kHz:

Note that the static crashes you hear in the recording are not due to performance shortcomings of either radio, but due to regional storms on the date of my recordings.

Summary

I took the following review notes of the Melson S8 from the moment I first turned it on…

Pros

  • To prevent the unit from accidently being turned on, the S8 has a traditional key lock and one must press and hold the power button to power up or shut down
  • ATS Auto tuning
  • AUX in
  • Good AM/FM performance
  • Standard mini USB port for charging

Cons

  • Noise (chirp) every ten seconds in MP3 mode via headphones
  • Telescoping antenna swivel a little too loose
  • MP3 fast-forward imprecise–upon stopping, it jumps ahead ?3 minutes on long recordings
  • Pronounced muting between frequencies while tuning
  • Tuning speed slow, cumbersome, not adaptive; 5 kHz steps only on shortwave
  • Internally-generated noise throughout the shortwave bands, noticeable on all but blowtorch signals
  • Non-standard MHz display on shortwave bands
  • Controls often have sloppy responses; e.g., one fast-forward button press in MP3 mode can yield two skips forward. Tuning knob can have a similar response
  • Back stand is a separate piece of plastic that can be easily lost
  • Even with light use, one of the rubber feet on my S8 has begun separating from the body (may be repairable with adhesive?)

I’m sure you’ll note the number of cons in this list. As a result, I could not recommend purchasing the Melson S8, especially if you’re seeking a good shortwave receiver. There are many other radios in the same price range which offer excellent shortwave reception. I would suggest the Tecsun PL-380 or Tecsun PL-310ET, instead.

The tilt stand is removable (and I appear to have lost mine)

The tilt stand is removable (and I appear to have lost mine)

If, however, you’re looking for a portable AM/FM radio with a built-in MP3 player, you may be pleased with the S8. And as I suggested, I’ve also found the S8 useful in a pinch as a laptop speaker.

But if you already have a Melson M7, do keep it. It’s a good radio, and functions well for what it does. I feel like the Melson S8 is an “upgrade” that its engineers never actually tested. If they had, they would certainly hear the high noise floor on the S8 and realize that this radio can only detect the strongest of stations.

I purchased my Melson S8 on Amazon, where the Melson M7 is also sold.

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Latest version of DXtreme Reception Log now available for download

last_log_entries_window_and_reception_log_windowI just received the following note from SWLing Post sponsor, Bob Raymond (NE1I), at DXtreme software:

“I am pleased to announce that the latest version of our logging software for radio and TV monitoring enthusiasts is now available: DXtreme Reception Log — Advanced Edition, Version 9.0.”

For details, check out the DXtreme Reception Log — Advanced Edition, Version 9.0. full press release (PDF).

schedule_checker_and_reception_log_wndow

And many thanks to DXtreme for supporting the SWLing Post!

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Looking forward to the 2014 Dayton Hamvention and FDIM

Each year, I attend the Dayton Hamvention and much of the QRP conference, Four Days in May.  This year, I’ll be working our Ears To Our World table again, along with other volunteers, at booth 411 in the Ball Arena (BA411). Please stop by and introduce yourself!

What I love about the Hamvention (besides the massive outdoor flea market) is that it is a one-stop-shop for innovations appearing in our radio world.

Here are a few of the companies I’ll be following at the Hamvention this year:

Ten-Tec

Ten-Tec-AlphaTen-Tec announced yesterday that it will merge with Alpha Amplifiers under the flag of RF Concepts. I plan to stop by Ten-Tec’s booth Friday and learn more about the merger. Personally, I believe the merger with Alpha Amplifiers is a good move. Both of these companies are known for great customer service and quality US-based design and manufacturing.

I know Ten-Tec is introducing a new open-source product to their line, the Patriot, because I’ve been beta testing one (check QRPer.com for details later this week).

Icom

Icom-ID-5100Icom will showcase their new ID-5100 D-star, dual band, mobile with built-in GPS. While I’m more of an HF guy, this radio does intrigue me. You see, for almost one year now, I’ve been very pleased with my Icom ID-51A, dual-band, D-Star handie talkie (HT).

I find D-Star to be a very flexible digital mode and I’m amazed with how many interesting mom-and-pop companies have produced products for the D-Star mode. I’m surprised neither Yaesu nor Kenwood has adopted the D-Star standard (it’s not proprietary to Icom–indeed, read about the CS7000 below).

The new ID-5100 is a mobile version of my ID-51a. What I love about this radio is that it can store repeater frequencies and dynamically load them based on your geographic location. Perhaps my largest gripe with mobile VHF/UHF rigs is their inability to adapt to the repeater “landscape” when you travel. The ID-5100 may change this and push other manufacturers in the same direction.

Connect Systems

CS700_WEBIn less than a year, Connect Systems has become a household name among ham radio enthusiasts who love VHF/UHF and digital modes.

This Connect Systems is developing an HT–the CS7000–which will be the first non-Icom radio to have the D-Star digital mode. Whatsmore, in addition to D-Star, the CS7000 will also pack DMR.

I don’t think Connect Systems will have a working prototype at the Hamvention (I could be wrong), but there is a possibility that they will be taking early orders.

Elad

FDM-DUO-openingI’ve been intrigued by the Elad line of Software Defined Recievers. This year, they will attend the Dayton Hamvention. I look forward to checking out the new FDM-DUO tabletop SDR. I plan to review some of the Elad product line in the near future.

Palstar

Last year, Palstar showcased a prototype QRP transceiver with touch screen interface. To my knowledge, this would be Palstar’s first transceiver (though they’re well known for antenna tuners and their shortwave radio receiver, the R30A).

Last year, I was told that the new Palstar transceiver would be available this year and would retail between $1,600 – 2,000 US (a rather steep price for a transceiver with 20 watts output). One of the transceiver’s designers assured me that the receiver would “be worth the price.”

Bonito

antennajet_front_hamradio2013I’ll stop by Bonito’s booth to check out their new AntennaJet ASM300.  I’m curious how it works and what the Hamvention price will be.

Though pricing is a little steep, I might bring one home as I often would like to share one antenna with two receivers simultaneously.

Elecraft

PX3The only new product I know of from Elecraft is the PX3 Panadapter for their Kx3 transceiver. Reviews of the larger P3 Panadapter for the Elecraft K3 are excellent, so I imagine this will be a great product. I hope to check out the PX3 at the Elecraft booth–I believe they’ll have a prototype on display.

SDRs

For the past three years, the market for software defined radios has been growing rapidly. I’ll be on the lookout for anything new–especially improvements on current 3rd generation SDRs.

Did I miss something?

Please comment if there’s something you’d like me to check out at the Hamvention–I’ll try to include it!

Again, if you’re attending the Hamvention, please stop by and introduce yourself at our booth: 411 in the Ball Arena (BA411).

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Eric remembers SWLing while deployed in Abu Dhabi

In an email last week, my good friend Eric McFadden (WD8RIF), mentioned the shortwave radio set-up he used while deployed in Abu Dhabi, United Arab Emirates back in the early 1990’s. I asked Eric for permission to post his email notes–not only did he agree, but he also found photos he took at the time.

Eric notes:

Desert_Storm_SW_Abu_Dhabi_UAE_01[F]or the Desert Shield/Storm, aka the First Gulf War, I took my Sangean ATS-803A with a doublet fashioned from two Radio Shack audio cables. The doublet was an audio cable with an RCA on one end and lugs on the other; I split the conductors all the way down to the RCA connector and it was almost the right length for a proper 31m dipole.

Desert_Storm_SW_Abu_Dhabi_UAE_02

The feedline was an audio extension (+/- 25′) with a male RCA on one end and a female on the other end. The ‘803A had a proper RCA antenna connector instead of a silly phone connector. I hung the doublet between the peaks of two of our 10-man tents, the front of our tent and the back of our neighbors’. When the UAE winds ultimately broke the doublet at the RCA connector, I stripped the ends and made a random-length end-fed wire out of it.

Desert_Storm_SW_Abu_Dhabi_UAE_03

Our tents had AC-power (and A/C cooling and heat-pump heat) and I’m pretty sure I powered the ‘803A from the “mains” instead of stuffing D-cells into the radio. D-cells were available in the little BX on the base, of course.

The three photos [above] are of my installation in our tent-city at Al Dhafra Airbase near Abu Dhabi, United Arab Emirates. I did deploy my 31m dipole here. These photos were from before the dipole broke and was replaced by an end-fed wire build from the pieces of the broken dipole.

[This photo] was from inside our "hooch" on the Lockheed Compound near Jeddah, Saudi Arabia.

[This photo] was from inside our “hooch” on the Lockheed Compound near Jeddah, Saudi Arabia. (Click to enlarge)

That ATS-803A was a great receiver. It’s only real flaw was its size and weight. The size, of course, allowed for a really fine speaker. I traded the ‘803A in at UAR when I bought the ‘7600G and the little active [AN-LP1 loop] antenna when we thought we were to be deployed to Kosovo[.]

Here’s text from my journal I wrote shortly after returning stateside:

“I found many interesting and exotic stations on my shortwave radio, a Sangean ATS-803A and a simple dipole antenna, but as the war progressed,
I settled on the BBC for their award-winning news coverage.”


Many thanks, Eric! I’m happy to hear such a good report of the Sangean ATS-803A–there are still many 803A’s on the used market (click here to search eBay).

Indeed, I just realized that while you were deployed in the UAE, I used the Radio Shack branded version of the ATS-803A: the Radio Shack DX-440 while studying French and living in Grenoble, France. The DX-440 delivered my daily dose of the Voice of America (the only English language news I allowed myself to listen to at the time). Since the VOA broadcast often coincided with meal time at the Université Stendhal cafeteria, I left my voice-activated Micro Cassette recorder in front of the DX-440 which was, in turn, set to turn on one minute prior to the VOA broadcast. It was an amazingly reliable arrangement. (Hard to believe that was over 20 years ago!)

Come to think of it, I’ll have to dig up those micro cassettes and see if I still happen to have one with a recorded broadcast.

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Mehmet Burk reviews the Degen DE660 and DE1126

Degen-DE660SWLing Post reader, Mehmet Burk, has apprised me of reviews he has published of the Degen DE660 and DE1126.

Until reading Mehmet’s review, I was not aware of the Degen DE660 (FM/Blutooth/MP3 player). He states the DE660, will fill a room or vehicle with outstanding sound quality.”

The DE660 could be an inexpensive alternative to the ubiquitous Bluetooth speaker–one that also sports FM.

Mehmet also gives the DE1126 good marks.

Click here to read the DE660/DE1126 reviews on Mehmet’s website, ReliefAnalysis.com.

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Sean crunches the language numbers

Sean Gilbert, International Editor at WRTH, writes:

I have completed my season-on-season analysis of the top 18 languages used by SW broadcasters. I chose 18 because it is the number we use in our bargraph file (odd number I know, but 18 just fits nicely and it is difficult to find many more colours that are sufficiently different from one another to be easily distinguishable in print).

SeanGilbert-Analysis

If you study the image [click to enlarge], you can see the how the output of various popular languages is declining with each passing season. There are a few surprises, like the 15% increase in German output this season over B13 (but the bigger picture is that it has reduced by nearly one half since B10 -when I first started this analysis). English output has been cut by over 1/3, Spanish, Russian, Farsi, Indonesian, Portuguese and German have all reduced by about 50% from B10.

A couple of languages, however, stand out as being fairly static – Chinese and Tibetan. Chinese (that is mainly Mandarin and Cantonese dialects) has reduced by a mere 5.7% since B10, and Tibetan output by less than 1%.

There can be no doubt that International Shortwave Broadcasting is in its ‘twilight years’ now, but there is still a goodly amount of different programming to listen to, from a large number of stations.

To emphasise that point, for the A14 season, we have the full schedules of 196 international and clan/target broadcasters in our A14 schedules pdf file (which can be downloaded for free from the WRTH website).[…]

I may, at some point in the future, delve in to my archives and see if I have any usable data that will allow me to go further back with this study.

Many thanks to Sean Gilbert and the WRTH for making this analysis available!

You can pick up your copy of WRTH at Universal Radio or Amazon.com.

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