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!

Traveling light, SWLing right: the best shortwave radios for travel

This article originally appeared in the March 2014 issue of The Spectrum Monitor Magazine.


SWL Travel Gear - Grundig G6

With spring around the corner, my thoughts drift toward the outdoors…and especially, toward travel. Those who know me know that I love travelling, anywhere and everywhere–and that I prefer to travel light, with only one bag. In fact, I can easily live for two weeks out of a convertible shoulderbag/backpack (the Timbuk2 Wingman) that’s so compact, I can fit it under the the seat of even the smallest, most restrictive aircraft. I never have to check luggage unless the nature of my travel requires extra supplies (I run Ears To Our World, a non-profit that donates radios and other technologies to powerless regions in the developing world).

My Timbuk2 Small Wingman is very compact, yet holds everything I need--including radio gear--for two weeks (or more!) of travel.

My Timbuk2 Small Wingman is very compact, yet holds everything I need for two weeks (or more!) of travel.

So, why not pack everything you could possibly ever want on a journey?  While this remains an option, travelling light has many advantages over the take-it-all traveler’s method. First, it gives one incredible freedom, especially when travelling by air or train.  I never have to worry about being among the first to be seated in an aircraft, nor do I worry about my luggage not making a connection when I do.  Second, it’s kinder on the back and shoulders, and easier to maneuver wherever I go–no wheels required–whether in a busy first-world airport or bustling third-world street market.  Third, I always have my most important gear right there with me.  And finally (I must admit) I find light travel to be fun, an entertaining challenge; the looks on friends’ faces when they meet me at the airport to “help” with my luggage is, frankly, priceless.  Seeing me hop off a flight with my small shoulder bag, friends ask in bewilderment, “Where’s your stuff?” It’s music to my ears.

You would think that having such self-imposed restrictions on travel–carrying a small, light bag–would make it nearly impossible to travel with radio. On the contrary!  Radio is requisite, in my book–er, bag.  I carry a surprising amount of gear in my small bag:  once at an airport security checkpoint, an inspector commented, “It’s like you have the contents of a Radio Shack in here–!” But more significantly, each piece–and radio–is carefully selected to give me the best performance, durability, versatility, and reliability.

So what do I look for in a travel radio? Let’s take a closer look.

SWL Travel Gear - full selection

Travel Radio Features

While the CountyComm GP5DSP only has average performance for its price class, it has three different ways of auto tuning stations quickly, an alarm function and the display will even indicate the current temperature. Its unique vertical, thin body might be easier to pack at times, depending on your travel gear.

The CountyComm GP5DSP has three different ways of auto tuning stations quickly, an alarm function and the display will even indicate the current temperature. Its unique vertical, thin body might be easier to pack at times, depending on your travel gear.

In a travel shortwave radio, I search for features I wouldn’t necessarily pick for home use, where I’m mainly concerned with raw performance. I don’t want to carry an expensive receiver while traveling, either: $100.00 US is usually my maximum. This way, if I accidently break the radio (or my gear gets stolen), I won’t feel like I’m out very much money.  I also prioritize features that benefit a traveler, of course; here are some that I look for:

  • Small size: Naturally, it’s sensible to look for a travel radio that’s small for its receiver class for ease in packing.
  • Overall sturdy chassis: Any travel radio should have a sturdy body case that can withstand the rigors of travel.
  • Built-in Alarm/Sleep Timer functions: While my iPhone works as an alarm, I hate to miss an early flight or connection, so it’s extra security when I can set a back-up alarm.
  • Powered by AA batteries: While the newer lithium ion battery packs are fairly efficient, I still prefer the AA battery standard, which allows me to obtain batteries as needed in most settings; a fresh set of alkaline (or freshly-charged) batteries will power most portables for hours on end.
  • Standard USB charging cable: If I can charge batteries internally, a USB charging cable can simply plug into my smart phone’s USB power adapter or the USB port on my laptop; no extra “wall wart” equals less weight and less annoyance.
  • ETM: Many new digital portables have an ETM function which allow auto-scanning of a radio band (AM/FM/SW), saving what it finds in temporary memory locations–a great way to get a quick overview of stations.  (As this function typically takes several minutes to complete on shortwave, I usually set it before unpacking or taking a shower. When I return to my radio, it’s ready to browse.)
  • Single-Side Band: While I rarely listen to SSB broadcasts when traveling, I still like to pack an SSB-capable receiver when travelling for an extended time.
  • RDS: Though an RDS (Radio Data System) is FM-only, it’s a great feature for identifying station call signs and genre (i.e., public radio, rock, pop, country, jazz, classical, etc.)
  • External antenna jack: I like to carry a reel-type or clip-on wire external antenna if I plan to spend serious time SWLing. Having a built-in external jack means that the connection is easy, no need to bother with wire and an alligator clip to the telescoping whip.
  • Tuning wheel/knob: Since I spend a lot of time band-scanning while travelling, I prefer a tactile wheel or knob for tuning my travel radio.
  • Key lock: Most radios have a key lock to prevent accidentally turning a radio on in transit–but with a travel radio, it’s especially important to have a key lock that can’t be accidentally disengaged.
  • LED flashlight: Few radios have this, but it’s handy to have when travelling.
  • Temperature display: Many DSP-based radios have a built-in thermometer and temperature display; I like this when I travel anytime, but especially when I’m camping.

While I don’t have a portable that meets 100% of the above travel radio wish-list, I do have several that score very highly.  I also rank my travel radios by size, as sometimes limited space will force me to select a smaller radio.

Here are a few of the radios I’ve used and/or evaluated for travel–I’ll break them down by size. Note that all portable radios have alarm/timer functions, unless noted otherwise.

My Tecsun PL-380 and the small Eagle Creek pack that also holds my Zoom H1 recorder, earphones, audio cables, external antenna, spare batteries and Kindle.

I often grab the Tecsun PL-380 for travel. It’s an ultra-portable that truly performs and even has a selection of six AM bandwidths.

Ultra-portable:

Tecsun-PL880-SWLing-Post-0528

Full-Featured Portable:

I have also been known to travel with an SDR (software defined radio), especially if travelling to an RF-quiet location where I could make spectrum recordings. While SDRs all require a computer (laptop) to operate, those best suited for travel derive their power from the same USB cable plugged into the PC. Neither of the SDR models below require a power source other than what’s provided by their USB cable.

A screen capture from my Toshiba Satellite Windows 7 laptop (click on image to enlarge)

The RadioJet is an excellent travel radio: it’s an excellent performer, über-rugged and is powered by one USB cable.

“Black box” radios (SDRs & PC-controlled radios):

  • RFSpace SDR-IQ • Pros: Small size, works on multiple operating systems (Windows, Mac, Linux) • Cons: front end can overload if close to strong signals
  • Bonito RadioJet • Pros: Great performance, low noise floor, good audio, flexible graphic interface; • Cons: Windows only, limited bandwidth on IF recordings, no third-party applications (note that the RadioJet is technically an IF receiver). Check out our full review.
The CommRadio CR-1

The CommRadio CR-1

Tabletop:

Seriously? A travel-ready, full-featured tabletop–? Until last year, I would have argued that it was impossible to travel lightly with a full-featured desktop radio in tow.

My view changed when I got my hands on the CommRadio CR-1 tabletop SDR. Indeed, other than it being pricey ($600, as compared with $100 portables) this rig is ideally suited to travel!

The CR-1 has an array of features–most everything you’d expect from a tabletop radio–and even covers some VHF/UHF frequencies. Its built-in rechargeable battery not only powers it for hours at a time, but meets the strict airline standards for battery safety. The CR-1 can also be powered and charged via a common USB cable. It’s also engineered to be tough and is almost identical in size to the Tecsun PL-880.

CommRadioCR-1PowerKnobThough I’ve never needed to do so, you can even remove its resin feet to save still more space. Its only less than travel-friendly feature is the fact that it’s quite possible to accidently power up the CR-1 by bumping the volume button during travel–a problem easily remedied, however, by simply twisting an insulated wire around the stem of the volume knob (see photo).

The importance of a Go-Bag

The SpecOps PackRat

The Spec-Ops Pack-Rat

I keep a dedicated “go-bag” with radio and supplies–specifically, the Spec-Ops Brand Pack-Rat–packed and ready to travel, at the drop of a hat. Why? First of all, I know exactly what I’ll be taking, no need to ponder if I have everything.

Inside the bag, everything has its place: my portable SW radio, my Android tablet, my D-Star Icon ID-51a HT, DVAP (DV Access Point Dongle), my Zoom H2n Handy Recorder, earphones, charging cables, batteries, small notebook, clip-on wire antenna, etc.

If something’s missing, there’s an obvious blank spot in my bag. I also know exactly where and how it fits into my carry-on bag, so if it’s missing, it’s conspicuously missing. Since I’ve been using this go-bag, I’ve never left anything from my pack behind. Incidentally, this is how I pack the rest of my bag, as well: everything has its place, and any gap will draw my attention to exactly what’s missing.

SWL Travel Gear - Spec-Ops Pack-Rat Open

There’s another benefit to having a dedicated go-bag: when flying, before I place my carry-on under the seat in front of me or in an overhead compartment, I can pull the go-bag out of my carry-on and have my Android tablet close at hand with other electronics.  As an added bonus, when going through airport security, all of my electronics can be easily removed from my flight bag by taking out just this kit.

 SWL Travel Gear - Spec-Ops Pack-Rat Contents

I’ve had many versions of the Go-Bag over the years, and they’ve all done a great job. What I love about the Spec-Ops Brand Pack-Rat, though, is the fact that it’s military grade–very durable–opens with all of the main storage pockets on the inside, has a bright yellow interior which makes it easy to see the contents (even in the dimness of a night flight), and it’s just the right size to hold my usual travel gear. The Spec-Ops Brand Pack-Rat also carries a lifetime, no-matter-what, guarantee.

There are thousands of similar packs on the market, and you may already have one, but you should look for something with multiple storage pockets. Small packs I’ve used in the past that only had one or two main compartments made it easy to leave something out when packing.

Radio travels

The travel radios I reach for most often. Top Row (L to R, Top to Bottom)  Tecsun PL-380, Sony 7600GR, CommRadio GP-5DSP, Grundig G6, Tecsun PL-660, and the CommRadio CR-1

The travel radios I reach for most often. Top Row (L to R, Top to Bottom) Tecsun PL-380, Sony 7600GR, CommRadio GP-5DSP, Grundig G6, Tecsun PL-660, and the CommRadio CR-1 (Click to enlarge)

When I spent a year in France during my undergraduate studies in the early 1990s, shortwave radio was my link with home. I would listen to the VOA–the only source of English I permitted myself to hear–like clockwork, each week. Today, although I travel with a smartphone which can tune in thousands of stations, I always choose to listen to radio. Besides, if the Internet goes down or if–heaven forbid!–your trip takes you into a natural disaster, it’s radio that you will turn to to stay safe and informed.

If you take anything away from this reading, I hope it’s that even when you’re presented with travel restrictions, you won’t hesitate to take your hobby, in the form of a portable radio and a few accessories along. It contributes measurably to the fun of travel, as I’ve discovered when I’m able to tune in local and international stations so different from those I hear at home.  Or sometimes, it’s just the opposite–it’s the chance to pick up a favorite broadcaster or program while you’re on the road.

After all, for me and other travelers like me, the world’s familiar voice is radio.

SWL Travel Gear - Full View

SWLing.com’s 2012 Holiday Shortwave and Radio Gift Guide

One of the most popular posts on the SWLing Post each year is the annual Holiday Radio Gift Guide. I started this annual post in 2010 when I realized that it would be easier than answering an in-box full of individual emails from people seeking the perfect shortwave radio for their friend or loved one.

In the following, you’ll find a handful of select radios I recommend for this gift-giving season. I’ve arranged this selection by price, starting with the most affordable. I’ve included a few promising new radios that have recently been introduced to the market, along with models that have proven their reliability and are on their way to becoming classics.

For the benefit of those with less radio experience, this quick guide is basic, non-technical, and to the point. For more comprehensive reviews, please consult our Radio Reviews page.

Updated for the 2012-13 holiday season on 22 November 2012.

Simple, affordable and portable

The Kaito WRX911 is a classic, no-frills analog radio. Turn it on and tune. That’s its game.

Kaito WRX911 or Tecsun R-911 ($33)

I’ve owned this little radio for years. It has been on the market a long time and I know exactly why: it’s affordable and very simple to operate. While it has no tone control, bandwidth control or digital display, the WRX911 performs better than other radios in its stocking-stuffer price range. I find its medium wave (AM band) reception above par–especially its ability to null out interfering broadcasts by simply turning the radio body. The WRX911 is also a great radio to keep in the glove compartment of your car. (Another similarly-priced radio to consider is the DE321, which we recommended last year–also check out our review.)

You can purchase the Kaito WRX911 from Universal Radio.

Don’t live at home without it

No matter where you live,you should have a self-powered radio in your home. The Eton FR160 is like a Swiss Army Knife when power fails.

Eton FR160 ($34 US)

A good friend recently sent me a message: she had been without power in the wake of Hurricane Sandy for two full weeks. She also added that her little FR160 kept her family informed and provided comfort in the dark days following the hurricane.

The Eton FR160 is a sturdy and useful little radio.  This radio features AM/FM and the NOAA weather radio bands (at least, the North American versions do; international versions may have shortwave instead of weather frequencies). The FR160 also features a very bright white LED flashlight and even sports a small solar panel that can effectively charge the internal battery pack. The FR160 also features a USB port that you can plug your mobile phone, iPod or other USB device into for charging. (Note that it takes a lot of cranking to charge a typical cell phone, but I can confirm that it does work in a pinch.)

Over the past few years, these radios have become ubiquitous. I’ve seen them in sporting goods stores, RadioShack (Tandy in some countries), BestBuy, Target, Bed Bath and Beyond–indeed, they’re in practically every North American big-box store and in many mail order catalogs besides. Of course, Universal Radio sells them, too.

The CC Solar Observer has everything you need to weather a power outage

CC Solar Observer ($50 US)

Like the FR160, the CC Solar Observer is a wind-up/solar emergency radio with AM/FM and Weather Band, and an LED flashlight built into the side of the radio. It’s perhaps a nicer option for those who want bigger audio out of their emergency radio. The Solar Observer is rugged and well-designed, like many C.Crane products.

The CC Solar Observer is available at C.Crane.

Eton and C.Crane sell many other self-powered radio models.  If interested in exploring more models, check out our self-powered/emergency radio reviews.

A shortwave radio with Bluetooth

When coupled with another Bluetooth device, this radio doubles as wireless remote speakers

The Tecsun PL-398BT ($100)

The Tecsun PL-398BT is a very unique shortwave radio.  In fact, it may be the perfect gift for a radio enthusiast who is also very tied to their computer or smart phone. Besides being a very capable shortwave/AM/FM receiver in its own right, when put into Bluetooth mode and connected to a smart phone, PC, or other device, the PL-398BT’s speakers act as its wireless stereo speakers. I believe this may be an ideal way to listen to internet radio from your iPhone, for example. Of course, the PL-398BT comes from a legacy of great receivers, so the AM/FM and shortwave performance will not disappoint. It’s a little on the pricey side for a shortwave radio that lacks the SSB mode (for listening to utility and ham radio transmissions), but the Bluetooth function more than makes up for it, in my opinion.  Some people may definitely prefer this function.

You can purchase the PL-398BT from Universal Radio or you can click here to search eBay.

Best performance for price

The Grundig G3 has a solid reputation and at $100, great value for the performance.

The Grundig G3 ($100 US)

Simply put, the Grundig G3 offers the best bang for your buck in 2012. I have a lot of portable radios, but the one I probably reach for the most–for recreational shortwave radio listening–is the Grundig G3. I wrote this review three years ago and even recently posted this update. Read them and you’ll see why I like the G3.  At $100, the G3 will please both the shortwave radio newbie and the seasoned listener.

The Grundig G3 can be purchased from Universal Radio or Grove. Some local RadioShack stores also keep the G3 in stock (though unfortunately, less often than they used to).

Of course, two other excellent (though pricier) options are the Tecsun PL-660 and the Sony ICF-SW7600GR.

Small black box + PC = rich performance

The RFSpace IQ is small, but packs a big punch

The RFSpace SDR-IQ  ($500 US)

If $500 is within your budget, and you’re buying for someone who would love combining their radio hobby with computer technology, a software defined receiver (SDR), like the RFSpace SDR-IQ, will certainly exceed their expectations. There are many SDRs on the market, but the SDR-IQ offers the most bang-for-the-buck in the SDR line (though the WinRadio Excalibur ($900 US)–which we recently reviewed–and the Microtelecom Perseus ($1,000 US) are certainly pricier benchmarks worth considering).

The RFSpace SDR-IQ is available from Universal Radio and is manufactured in the USA.

The Bonito RadioJet

The Bonito RadioJet ($700 US)

The Bonito RadioJet is new to the North American market in 2012.  I reviewed the RadioJet this summer and even traveled with it extensively. I was thoroughly impressed with its portability, performance, and it did not task my PC as much as SDRs do.  Like the SDR-IQ, it’s a small black metal box that hooks up to your PC to unlock its impressive features. The RadioJet, though, represents cutting-edge IF receiver design, and comes with an amazingly versatile software package. If you’re buying for someone who likes versatility and raw performance–and likes being an early adopter–the Bonito RadioJet may well be the perfect fit.

The Bonito RadioJet can be purchased from Universal Radio and is manufactured in Germany.

Tabletop Performance

The Alinco DX-R8T

The Alinco DX-R8T ($450 US)

We featured the Alinco DX-R8T in last year’s holiday gift guide. We also gave it a full review–in short, this radio thoroughly impressed us. It’s full-featured, performs well, and comes at a very affordable price. If you’re buying this for a ham radio operator, they’ll understand the reason why the Alinco DX-R8T needs a 12 volt power supply and an external antenna. It’s a receiver version of a ham radio transceiver, and as such, does a fine job on SSB modes.

Want more gift options?  Try our 2011 or 2010 gift guides, take a look through our shortwave radio reviews guide and/or our simplified reviews page.
Happy Holidays!