Category Archives: New Products

Grace Digital Mondo+ Kickstarter

Many thanks to SWLing Post contributor, Tom Ally, who writes:

I remember that article you wrote about Wi-fi radios and just saw this Kickstarter on Facebook that may interest you:

https://www.kickstarter.com/projects/1209003580/mondo

[T]hey are saying it is supposed to ship out sometime next month. [S]ome of the things it has –over the old Mondo–is Bluetooth 4.1 and Chromecast built in.

Thank you, Tom! Here’s the product description from Kickstarter:

The home audio market is evolving, and Grace Digital is leading the way. We combined the latest Wi-Fi audio streaming technologies from Google, added Bluetooth audio streaming, and over 30,000 AM/FM/HD radio stations from around the corner to across the globe. The Grace Mondo+ can even be controlled by the Google Assistant on devices like Google Home, the front panel controls, free smartphone apps, or the included remote control. We wrapped the technology in a beautifully crafted cabinet, and drive the audio with custom made speaker drivers and high performance class D digital amplification, ensuring the best possible listening experience in a perfectly compact design. We hope you love the Mondo+ as much as we do!

This is an “all or nothing” campaign, meaning it’ll have to be fully funded for the production run to become reality.

As a Kickstarter supporter, the pricing is in line with the Grace Digital Mondo (we reviewed last year).

I am still quite happy with my Como Audio Solo, so will not plan to back the Mondo+ at this time. If I was interested, I would splurge for the $174 Early Bird package which includes a Lithium Ion battery pack. Shipping could be as early as April 2017.

Check out full details and a video on Kickstarter.

Thanks, Tom, for the tip! I would certainly welcome a review of the Mondo+ from any Kickstarter backers!

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The W6LVP magnetic loop antenna

Many thanks to SWLing Post contributor, Troy Riedel, who asks:

Just curious if you or anyone you know have any experience with Magnetic Loops from W6LVP? […]Here’s his eBay page – 458 feedbacks and 100%.

Thank, Troy! I’ve never used the W6LVP loop, but the price–in comparison with other wideband mag loop receive antennas–is very attractive.

W6LVP currently offers two models of loop antennas:

Here’s the product description of the Mag Loop with Power Inserter from the W6LVP website (where orders can also be made–pricing identical to eBay):

The Wellbrook Model ALA1530LN-2 and DX Engineering (Pixel/Inlogis) Model RF PRO-1B magnetic loops are both good amplified receive antennas.  However, they are both expensive.  Shipping the Wellbrook antenna from the UK to the US adds another $100.

Extensive side-by-side testing of the Wellbrook, DX Engineering, and W6LVP receive loops was compiled using simultaneous WSPR signal-to-noise reception reports on all LF, MF, and HF amateur bands.  In addition, extensive laboratory bench tests measuring gain, signal-to-noise ratio, and IMD were also performed.  Signal-to-noise ratio is important to pull weak signals out of the noise and IMD is important to reject distortion caused by nearby strong transmitters such as AM broadcast stations.  In both test regimens, all three antennas performed very well and without significant difference.

The antenna version listed here includes a power inserter for use with receivers or with transceivers that have a separate receive antenna input.  If your rig doesn’t have a receive antenna input, check out my antenna with a transmit/receive switch.

If you live in the shadow of one or more high-power AM broadcast transmitters, contact me about a special version just for you.  Please contact me at [email protected].

W6LVP amplified receive-only magnetic loop antenna (boy is that mouthful):

  • The W6LVP mag loop is a complete receive antenna system delivering top-of-the-line performance to amateur radio operators and SWLs – particularly for those with space and/or budget limitations.  It is a great complement to vertical or wire transmit antennas.   You have a knob to turn up the power but don’t have one to turn up the received S/N.
  • Ten foot circumference (approximately 1 meter diameter) loop.  Small size yields a natural stealth for HOA challenges.  The loop is rigid enough to maintain its shape but flexible for portable transport or attic installation.
  • Includes a low-noise, broadband amplifier covering 2200 (135 kHz)  through 10 meters (30 MHz) with no tuning or adjustment.  Perfect match for continuous tuning SDR receivers.  Great for contesters to quickly check all bands.  Greater coverage is possible at reduced performance.
  • Light-weight antenna structure fabricated from furniture-grade PVC yields a strong but very light antenna weighing only 2 pounds (not including power inserter or power adapter).  Great for both portable/camping as well as fixed installations.  Light weight and small size make for lower shipping cost – particularly compared to shipping from the UK.
  • Directly compatible with a low-cost speaker tripod stand (not included) for portable operation.
  • Compatible with light-duty rotator (recommended) for fixed operation.  Loop can be rotated to null interference by up to 30 dB or enhance desired signals.
  • Includes low-noise linear AC power adapter to generate clean 12 volts for the loop amplifier.  Unlike the DX Engineering antenna which requires 24 VAC, power can be easily supplied by 12 volt batteries during portable operation.  Reverse polarity and short circuit protection provided by automatically resettable fuse.

Eham reviews are very positive–so far, 5 stars on all six reviews.

I also discovered this short video of W9OY comparing the W6LVP loop to a full size 80 meter vertical (verticals are much more susceptible to noise than loops):

Click here to view on YouTube.

I am very curious if any SWLing Post readers have ever compared the W6LVP loop to the Wellbrook or Pixel Loop antennas.

I actually own the Pixel Loop and might very well purchase, review and compare the W6LVP loop later this year (if time allows).

If you own the W6LVP loop and/or have compared it with the Pixel or Wellbrook, please comment!

Click here to view W6LVP antennas on eBay.

Click here to view the W6LVP website.

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New RX7300 adds receive-only antenna port to Icom IC-7300

(Source: Southgate ARC)

New receive antenna socket for IC 7300

IHSG and Vibroplex/INRAD announce the release of a new accessory product for the Icom IC-7300 which provides a receive antenna socket on the rear of the radio.

The INRAD model RX7300 allows the user to add a receive-only antenna jack to the Icom IC-7300. This easy to install plug-in modification requires no soldering and is simple to install and easily reversible. The RX7300 can also be used for the insertion of accessory items into the receiver chain on the IC-7300 like receive-only bandpass filters, low noise preamps, etc.

When installed, the transceiver will use the SO-239 antenna connector on transmit, and one RCA phono jack on the RX7300 for receive. To use the transceiver in normal operation via the SO239, leave the RG-174 coax loop installed between the 2 phono sockets.

The RX7300 retails for £49.95 or £99.95 fitted and is only available through HIS group affiliated stores. Customers who purchased their IC-7300s via an IHSG store will receive a £5.00 discount from the supply only price and £15.00 discount from the installed price.

For more information contact [email protected]

www.nevadaradio.co.uk
www.hamradiostore.co.uk
www.inrad.net

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The new Elad FDM-S3 SDR: screenshot of the entire FM broadcast band

Click to enlarge.

Many thanks to SWLing Post contributor, Rafman, who shares this tip via the Elad Yahoo Group where Elad engineer Franco writes:

Today I can show new hardware capabilities of FDM-S3:

24.576 MHz I/Q stream and you can see the whole 88-108MHz FM Band sampled.

The FDM-S3 is equipped of USB-3 controller…

Here a screenshot:
https://www.dropbox.com/s/uxlfi…/FDM-S3_FM_BAND_24MHZ_1.png
new info will come in next weeks.

73, Franco IU3ADL

Wow–the entire FM broadcast band! I bet recording that would burn through a 1 TB hard drive in no time! Can’t wait to try it!

As SWLing Post readers know, I love the FDM-S2. Very happy to hear the FDM-S3 is in the works.

We’ll post updates from Elad as they’re released. Follow the tag: FDM-S3

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Tecsun S-8800 update

UPDATE: Click here to read our full review of the re-engineered Tecsun S-8800. Note that the post below refers to the first production run units only.

If you’re considering purchasing the Tecsun S-8800, this is an important post.

I’ve had the S-8800 for about two weeks and had planned to have audio clip comparisons prepared and posted by now. My exceptionally busy schedule has made this difficult–and there a few other complicating factors.

First off, the good news: in terms of sensitivity, selectivity and audio fidelity, I’m very happy with the S-8800. I’ve compared it a number of times with the Tecsun PL-880 and the Sony ICF-SW7600GR and it either holds its own or even has a leg-up on both radios in terms of overall performance. I find that the S-8800’s AGC is more stable than my 1st generation PL-880.

Of course, what will be most telling is what you, dear reader, think of the performance when compared in a blind audio test.

As I mentioned, though, there are complicating factors–It’s not just my schedule which has made the S-8800 review come to a halt.

Birdies…

Yes, birdies. Lots of them.

At first, I thought the noises were due to the fact my mobile phone and Zoom H2N digital recorder were too close to the S-8800.  I dismissed this interference as it didn’t sound like the typical steady tone/carrier birdies I’ve come to loath over the years.

As my testing continued, though, I quickly realized these variable heterodyne and digital hash noises must be internally-generated.

Quite literally, as I was outdoors testing the S-8800 and making this discovery last week, I received a message from SWLing Post contributor, Bertrand Stehle (F6GYY). You might recall, Bertrand provided us with an initial review of his S-8800e (the European version of the S-8800). He also started noticing the birdies and, like me, initially assumed they were due to an external source of RFI.

Bertrand kindly mapped out the extensive list of birdies he found on his S-8800e–he noted a total of 81 birdie/carrier locations:

  • 14 birdies on longwave
  • 4 birdies on mediumwave
  • 63 birdies between 1859 – 29095 kHz

Comparing notes, there are some differences between Bertrand’s S-8800e and my S-8800:

  • Only 50-60% of the birdies on my S-8800 are in the same frequency locations as those mapped by Bertrand on his S-8800e
  • The total number of birdies, however, are likely identical–I find birdies where Bertrand hadn’t noted them

The appearance and intensity of the birdies can vary depending on listening location and the strength of any nearby broadcast signals. I’ve noticed four distinct birdie sounds: a variable carrier, a steady carrier, digital hash, and something I might describe as digital variable noises.

I’ve even noticed some change slightly as you move the radio around.

Here are a couple of examples:

Example on 610 kHz:

Click here to view/listen via YouTube.

Example on 2009.15 kHz:

Click here to view/listen on YouTube.

Moving forward

Obviously, this is a major issue for an enthusiast-grade portable.

I’m sharing all of this information with Anna at Anon-Co. No doubt, she’ll share this information with Tecsun engineering. The last I heard, projected availability of the S-8800 from Anon-Co is late March 2017. Perhaps there will be time for Tecsun to eliminate these birdies by improving internal grounding and/or shielding?

Until the birdie issue is sorted out, I’m not proceeding with audio comparisons or a full review. It goes without saying that, at present, I couldn’t recommend purchasing the S-8800. Sad, because this is otherwise a great radio.

I hope Tecsun can sort this out, though.

I will share any/all updates here on the SWLing Post.

Follow the tags S-8800 Birdies or S-8800.

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The Tecsun S-8800 tuned to Radio Guinea

Yesterday, while comparing the new Tecsun S-8800 with the PL-880 and ICF-SW7600GR (on the tail gate of my truck) I tuned to Radio Guinea and was instantly reminded why I love music over shortwave.

Here’s a clip I kept rather short for fear that YouTube might note the off-air music and pull the video for copyright infringement (happens all the time). I shot this with my mobile phone, so you can’t hear the bass notes:

Click here to view on YouTube.

Some of my favorite stations for music over the shortwaves are the Voice of Greece, Radio Guinea, Radio Havana Cuba, All India Radio, Radio Romania International, Medi 1 and Zanzibar Broadcasting Corp. Not to mention all of the private broadcasters like WRMI, The Mighty KBC and Bill Tilford’s productions!

Of course, there are so many more stations that play wonderful music! I keep a copy of Alan Roe’s music guide handy!

Though it’s still early days with the S-8800, I can say that it does a fine job reproducing music in full fidelity. Receiver-wise, it mops the floor with my S350DL.

UPDATE: Click here to read our full Tecsun S-8800 review.

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Tecsun S-8800: Unboxing, photos, and initial impressions

UPDATE: Click here to read our full Tecsun S-8800 review.

Yesterday, I received a Tecsun S-8800 from Anon-Co in Hong Kong.

I like opening radio boxes to find a cardboard insert like this one. It protects the radio and has so much less waste and individual cardboard bits inside.

As I always do when a new radio comes on the scene, I requested to purchase an early release of the Tecsun S-8800 radio for review months ago.  But this time, my contact at the Chinese distributor Anon-Co, Anna, insisted on sending us one “as a gift for the Chinese New Year of the Rooster.”

Because I’ve worked with Anna at Anon-Co for at least a decade, having purchased numerous radios for review and as gifts for family and friends, this was difficult to refuse.  I decided there was no need to do so. Each time I do an in-depth review and note shortcomings or deficiencies in the radios I’ve purchased from Anon-Co, Anna immediately passes my feedback and criticisms directly to the manufacturer’s engineers. I believe this feedback loop between customers, reviewers and manufacturers leads to improved product iterations. Of course, sometimes the negatives can be so problematic, manufacturers simply drop the product line and move on (remember the Tecsun R-2010D?  Case in point). So, while there are a number of other eBay retailers in China that distribute Tecsun radios, I prefer Anon-Co for these reasons.

Thank you, Anna!

The S-8800 is packed face-down to protect the front panel.

Manufacturers and retailers who send me products for review know that we radio geeks have fairly high expectations of our gear, and will therefore hold them to exacting standards. I’m not the least among these.  While I endeavor to be realistic, understanding producers’ limitations and the need for product growth, I also try to keep my reviews as objective as I can, and accommodate my own and others’ particular requirements and preferences.

So In the spirit of full disclosure, I must note that I’m not as avid a user of large portables like the S-8800 (or the Grundig GS350DL, S450DLX, or the C.Crane CCRadio-SW).

Personally I prefer smaller, full-featured travel-friendly portables, or else larger tabletop models.  Radios with a form factor like the Tecsun S-8800 are an “in-between” product in my world, thus I rarely use them.

That said, every month I receive questions from readers looking for this very “large portable” form factor. Some hobbyists enjoy a radio that’s easy to operate, featuring simple controls, robust audio, and dedicated external antenna connections.  For these listeners, a large tuning knob and generous display are more important than things like SSB and synchronous detection.In other words, they want a broadcast receiver. Some have literally asked for a modern version of the venerable Panasonic RF-2200 (which I admittedly love, an exception to the rule of my avoidance of large portables). In terms of aesthetics, it’s impossible to live up the legendary solid-state RF-2200, in my opinion…kind of like comparing a modern muscle car with the 1960s original from which it copies its design.

The S-8800, and its many predecessors, were certainly influenced by the RF-2200’s popular design & form factor: large speaker on the left, large tuning knob, wide-spaced knobs, and a generous display. Like the RF-2200, it has a durable, adjustable woven carry strap.  

The S-8800 ships with the accessories in the photo below: an IR remote control, two rechargeable cells, an RF adapter, and a USB charging cable.

Note the charging cable is only a cable; the S-8800 doesn’t ship with a wall-wart type charger. If you’re like me, you probably have a handful of USB chargers scattered around your home that you could use for the purpose of charging this radio.  And if you don’t, you can also use any free USB port on your PC to charge it.

USB chargers are cheap and well-known to spew RFI. I doubt you’ll enjoy listening to shortwave or mediumwave/AM while charging the S-8800’s internal cells. It doesn’t appear the S-8800 was designed for listening while plugged in; Tecsun clearly wants you to charge it and then listen, off battery power. The latter is my preference for listening anyway, but it may put off some potential S-8800 owners.

The display is easy to read from any angle, and it’s also easy to view in bright sunlight. In low light, you’ll be pleased with the backlight function.

On the right side of the S-8800, you’ll find an internal/external antenna switch, a DX/local switch, RCA type stereo line-out ports (covered in the photo above) and a stereo headphone jack.

On the back, you’ll find a mini USB port for charging, an antenna port for a radiator and ground wire, as well as an FM antenna port. 

The battery cover is predictably located at the bottom of the back panel and––a first for any shortwave radio I’ve reviewed––accommodates two (supplied) 3.7V Li-Ion (internally) rechargeable cells.

The right side panel has no connections or controls.

I must admit…the Tecsun S-8800 has some front panel controls I really appreciate. Most notably, it has a dedicated AM bandwidth selector and fine tuning control. I also like the dedicated treble and bass controls which can also be found on its predecessors’ front panels.

Over the next week, I’ll be evaluating the performance of the S-8800. I plan to post blind audio samples as I’ve done in the past, comparing the S-8800 to other portables: likely the PL-880 and the ICF-7600GR, PL-660 or PL-680.  Please be patient, however, as making these recordings takes time as I like to make sure each radio has a true representative sample and fair shot at showcasing performance.

What about those initial impressions? Yes, I must say I do like the package of the S-8800 better than its predecessors. I like the dedicated IR remote control, the many antenna connections, and, so far, the audio fidelity from the built-in speaker. Makes for a nice package.

But, ultimately, the proof is in the pudding:  let’s put the S-8800 on the air and compare it with some benchmarks!

Follow Tecsun S-8800 posts by bookmarking the tag: S-8800

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