Yearly Archives: 2014

Grundig G5 via Blinq: Might want to pass…

G5While many SWLing Post readers have reported positively about their experience with the online discount retailer Blinq.com, several buyers have not been happy with the used/open box Grundig G5 units Blinq is selling for $45 US each.

Mike (K8RAT) noted that his G5’s “audio distorts when volume greater than 10 on the numerical read-out […] higher level sends the audio into oscillation.” Another buyer noted his G5 was nearly deaf on AM.

If you order a G5 from the Blinq, check out the radio thoroughly before tucking it away on a shelf somewhere. Or, better yet, just pass on this particular deal.

Fortunately, I’ve only received excellent reports of Blinq’s customer service. They’ve happily refunded consumers money for defective products in a timely fashion.

On a side note, I can only report negatively about the retailer 1Sale.com.  I’ve been trying for six weeks to receive a refund on a defective (non radio) item I purchased. I’ve still haven’t received a response from customer service. I’m sending my 6th request today;  I’ll never purchase from 1Sale.com again.

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Best application for the SDR-IQ on a MacBook Air?

RFSpace-SDR-IQ-2

I’m plotting travels soon and plan to take my RF Space SDR-IQ along for the ride.

I’ve noted a number of excellent open source applications that work with the SDR-IQ, but many of them don’t work on the Mac OS X operating system. Those that do work on Mac OS X seem to lack the ability to make spectrum and audio (AF) recordings.

I had considered installing Windows 7 on my MacBook Air (as a dual boot) and running an app like SDR#, but I simply don’t have the storage space to effectively house two operating systems on the Air’s solid state drive.

I’m curious if anyone has an SDR application recommendation. Please comment if you do!

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AOR to announce two new products

Is this the TRX-305? We might not know until the Tokyo Ham Radio Fair.

Is this the TRX-305? We might not know until the Tokyo Ham Radio Fair.

According to Dave Zantow (N9EWO), AOR plans to announce two new products this year at the Tokyo Ham Radio Fair: the AR-DV1 receiver and the TRX-305 transceiver.

For more information, check out the news section onDave’s website.

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Field Recording with the Tecsun PL-380 and Transcend MP330

PL-380SWLing Post reader, London Shortwave, shared photos of his portable recording kit on Twitter yesterday. It consists of a Tecsun PL-380, Transcend MP330, in ear headphones, and a simple clip-on antenna (supplied with the PL-380). He recorded Radio New Zealand International with this gear.

Transcend-MP330

I love the compact form factor of the Transcend MP330–ideal for field recording. I’m curious if there are other high-capacity USB memory/recording sticks on the market.

MacBook

The PL-380 is a superb ultralight radio; my favorite small travel radio, in fact. The PL-380 can be found for about $42 US shipped via Amazon; an impressive value.

Many thanks to London Shortwave for sharing images of his ultralight DXing & recording kit!

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Dave’s late night listening session

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My good buddy, Dave Richards (AA7EE), recently shared this message with his friends, many of whom do not know a lot about shortwave radio (yet):

“I’m waking up very slowly this morning – was up until 4:30am listening to the 49 meter shortwave band on a new receiver I’m building, dubbed “The Sproutie Regen” after my cat Sprout. “Regen” is short for regenerative, which refers to the type of circuit used in this receiver – it was developed by Howard Armstrong in 1915 and is 100 year-old old technology. Most of the parts are fairly new, with the exception of the tuning dial, which was made by a company from Massachusetts, called “National” – it’s probably around 50 – 70 years old, and the tuning capacitor, which is around 50 years old but had never been used. It was “new” in it’s box.

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It’s not finished yet – will look a bit more spiffy when it’s done, but these are what its bones look like. 49M was fascinating last night. I heard an American propaganda station broadcasting to North Korea (The Voice Of Hope), and being jammed by the DPRK, an American propaganda station broadcasting to Cuba (Radio Marti), a very low power broadcaster from Canada, as well as Radio Habana Cuba, Radio Australia broadcast in Pidgin, Radio China International, as well as the Chinese domestic radio service (which Mao Tse Tung wanted all citizens to listen to), and a host of other broadcasters from all over. It was a fascinating cornucopia of signals from our very diverse world – and all on a receiver I built myself using 100 year-old technology.

I had trouble sitting in front of the desk because Jingles the blind kitty had curled up on the circular cushion on the chair and was happily sleeping. I somehow managed to squeeze myself in next to her and she is still napping here on the cushion next to me.

JinglesThe BlindKittie

Dave’s cat, Jingles, in his shack.

I love these late night sessions. It’s just me, a cup of coffee, a shortwave receiver to listen to far-off lands, and a lovely little furry creature slumbering next to me. Perfect. As some people in this part of the San Francisco Bay Area might say, ‘my natural vibrations are perfectly aligned with the planets and receiving much abundance.’

As for me, I’m just having a good time, thank you.”

Like it, too?  Follow Dave, Jingles, Sprout, and all of his homebrew adventures via his excellent radio blog.

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Shortwave Radio Recordings: Alcaravan Radio

casa trans. antena AM

Alcaravan Radio’s antenna site and transmitter house.

Yesterday, August 8, I was able to record Alcaravan Radio out of Puerto Lleras, Columbia. Alcaravan Radio broadcasts domestically on medium wave and also on 5.91 MHZ shortwave, from 23:30-12:00 UTC.

Though typical summer conditions meant for a higher noise levels, Alcaravan’s 1 kW signal still punched through the static and made for pleasant listening. In this recording, I was using the WinRadio Excalibur, but I listened for a couple of hours on the Elad FDM-S2 as well–both did an equally good job while connected to my large sky loop antenna.

To be clear, 1 kW is low output power by international broadcasting standards. Alcaravan Radio was not audible on the Tecsun PL-660 nor the Sony ICF-SW7600GR, though I have heard them on portables in the past during the late fall and winter months. Still, you might be able to snag them on a portable when summer conditions are favorable!

Click here to download the recording as an MP3, or simply listen via the embedded player below:

Click here to view an Alcaravan Radio QSL and transmitter site images.

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goTenna: Turn your smartphone into a text transceiver

goTenna

Many thanks to SWLing Post reader, Richard Cuff who has apprised me of the goTenna: a small device that allows you to use your smartphone to send and receive messages and share your GPS location with others without the need of mobile phone service.

goTenna describes their device:

“goTenna is a small, rugged device designed to make “No Service” no problem. Just pair your smartphone with a goTenna and communicate off-grid with those near you who also have goTenna, anywhere on the planet, regardless of access to cell reception or wi-fi. goTenna allows you to send and receive texts and share GPS locations on beautiful offline maps, without ever relying on central connectivity. Depend on it in all kinds of situations: when hiking in remote areas, traveling, attending music or sporting events or during an emergency. Plus, because goTenna is end-to-end encrypted, it’s not just for when you’re off-grid, but when you want to be.”

Some sources claim the goTenna is based on “short-wave” radio frequencies;  I discovered that it operates between 150-154 MHz, so this is not the case.  Still, it would be fascinating the see the potential in a device that could use the HF spectrum to create a smart phone mesh network. Though the antenna would need to be longer, communication distances in rural areas could surpass that of VHF frequencies. In the end, text messages would be an ideal format for such a system.

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