The original version of the following article was published in the November 2013 issue of Monitoring Times Magazine. Since applications are constantly being developed, I plan to update this posting regularily. Indeed, I have already added many apps since this article was first published in print. If you would like to suggest an app that I have not considered, please comment!
Amateur and SWL Apps for iOS and Android
Advances in technology have always gone hand-in-hand with our radio hobby-–indeed, in many cases, those advances originated with our hobby. Because of this, it should comes as no surprise that in a world where we are rapidly replacing home computing with mobile computing, radio hobbies are “app-ly” supported in the the mobile realm.
Although it’s beyond the scope of this article to include a comprehensive list of all radio-hobbyist-themed apps for the iOS and Android, nor will it include proprietary apps (those which compliment a particular radio or accessory), I offer here an overview of select apps that I myself have used and reviewed––with, of course, a focus on those I’ve found especially useful as a radio hobbyist.
In the list below I have linked to both the iTunes and Google Play stores, when applicable. I’ve also noted pricing for each app, but please understand that application developers can change pricing without notice.
Ham Radio Apps
If you’re an amateur radio operator, you’re in luck when it comes to apps. There are a multitude out there, and most are either free or very inexpensive. Below, I’ve categorized these by major function, beginning with those apps that help you get your ham radio license in the first place.
Amateur Radio Exam Prep (iOS; $4.99) There are several ham radio exam apps out there, but I find this one to be the best. It’s simple, adaptive, and keeps track of the elements and questions you incorrectly answer. While it costs $4.99 per exam (Tech, General and Extra), you can try the free version first, which allows you to explore and learn two of the exam elements before buying. Still, a much better deal and far more portable than an exam book.
Ham Radio Exam (iOS; Free) A very simple exam study tool, Ham Radio Exam allows you to cruise exam question pools and note the correct answer. You can also take sample tests and focused quizzes. While not quite as versatile as paid apps (like Amateur Radio Exam Prep, above), it may be all you need to get your ticket!
- Amateur Radio Exams 1.0 Pro (Android; $2.99) Out of all of the Android offerings, Amateur Radio Exams 1.0 Pro is my favorite exam practice app. It is free to try, and only costs a modest $2.99 to buy.
EchoLink (iOS/Android; Free) Why not turn your smartphone into an HT? After all (as I often say), phones are actually radios…right? I only recently discovered the EchoLink app, but it has quickly become the most useful ham radio app I use. From this app you can talk to any repeater connected to the EchoLink network; all you need is a WiFi connection or cellular data service. I recently traveled to Belize City and used EchoLink to connect with hams in the US and Canada and even check in on a net. It worked flawlessly. I couldn’t recommend it more. Did I mention it’s absolutely free, with no ads?
Ham Square (iOS; Free) A very simple app to track and display your Maidenhead designation in a matter of seconds. For the Android OS check out HamGPS (Android; Free). All three of these apps use your smartphone’s GPS to quickly resolve your Maidenhead location.
Repeater Book (iOS/Android; Free) An absolutely revolutionary app, in my opinion. Using your phone’s GPS, you can quickly reference local repeaters––any band, any mode––with full details, as you travel. This free app has replaced my need for the annual repeater atlas (which I’ve always found to be a little unhandy to use). Live in, or traveling to, the UK, Australia, Europe, and/or New Zealand? Repeater Book has a global version as well.
QRZ Callsign Search (iOS/Android; Free) The companion app to the popular callsign database site, QRZ.com. Their app is very basic, but makes it easy and convenient to do callsign lookups…although I do wish you could log contacts to QRZ.com via the app (hint, hint, developers!). Also check out HamRadio Call (iOS/Android; Free) as it even shows a map pinpoint for the QTH address on record.
PSK31 (iOS; $2.99) Launch this app, place it in front of your radio which you’ve tuned to a PSK31 signal, and it decodes on the fly. Very simple to use, and quite effective as long as your microphone is near the radio speaker. Meanwhile, Droid PSK (Android; $5.49) will decode and even encode PSK31, if you want that feature.
Hellschreiber (iOS; $2.99) Decode and send Hellschreiber text without a PC: place your mobile device near the speaker of your transceiver and this app will decode Hellschreiber on the fly. Connect the audio output from the headphone jack of your mobile device to your transceiver and you can even send Hellschreiber.
- ISS Detector (Android; Free) Chis Cooper comments: “this is one of my most often used Amateur Radio apps on my Android. It not only tracks and alerts on ISS passes with specified criteria, but with the pro upgrade, it will also track amateur radio satellites.”
- PocketSat3 (Android; $24.99/iOS) PocketSat software allows you to predict when satellites will be visible in your location and where to look in the sky in order to see them. The price for this app is steep and the developers ask that you download and evaluate the free (PocketSat3 LE Android/iOS) version before committing to purchase.
- WSPR Watch (iOS; Free) According to SWLing Post reader, Peter Marks, who developed WSPR Watch, “the app shows reported WSPR beacon spots as a list, on a map, and draws some graphs.”
- APRSdroid (Android; $4.95) APRSdroid is an APRS application that allows you to report your position as well as sending and receiving messages. It also conveniently displays nearby stations as a list or on a map. Be sure to check out the developer’s website.
- Pocket HAM bands Transceiver (Android; Free) This application remotely control several ham radio sources via an Android smart phone or tablet. It can link to Ham Radio Deluxe, control any Yaesu FT8x7 transceiver via Bluetooth or USB cable (bi-directional CAT only, no sound) and multiple WebSDR servers around the globe. Not exactly plug-and-play as some connection methods require configuration and audio via an IP source. Read their notes and watch videos of Pocket HAM Bands Transceiver on the developer’s website.
Ham Radio Reference (iOS; Free) This is a simple app that puts a few vital pieces of information in front of you. I wish I had this in my early days on the air, as it has a simple list with all of the Q codes, US & Canadian Amateur Band Limits, Country Codes, Band Plans, Radiogram Numbered Messages, Grid Square and Location, Q Codes, Local and UTC Time, RST, The Phonetic Alphabet, Unit Abbreviations, Metric Prefixes and more. Also check out HamIAm (iOS; Free).
Ham Radio Tools (Android; Free) A very simple reference guide that includes logging (even the ability to export and import logs). It also has short Q code reference sheet, common formulas, and an antenna calculator. It has a very intuitive interface and no ads.
HamLog Mobile Logging (iOS; $0.99) An all-in-one app for the mobile operator. This app will export your logs to most any logging program, including Logbook of the World. The newest version even includes a rig control interface. This app also includes many ham reference guides.
HamAntCal (iOS; Free) Need to calculate the length of a resonant dipole for the field? HamAntCal is a very simple application to help you do just that. Simply choose a configuration (Half Wavelength, Quarter Wavelength or Inverted Vee) and it will do the math for you.
Morse It (iOS; $0.99) This app not only reads but teaches CW. This is a 99¢ app, which, like many, offers several premium add-ons at additional cost. I like the interface and simplicity of this morse trainer. It also serves as a morse code reader. Simply place your iOS device in front of your radio’s speaker and watch it decode Morse code in real time. I’ve noticed that it decodes CW fairly well around 13-20 WPM; any slower or faster sometimes leads to more error. Still, it’s a great app for those who want to learn code, or who want to translate what they hear on the radio.
Morse Code Trainer (Android; Free) This is another excellent CW trainer, and will work on even the oldest Android OS versions.
MUF Predictor (Android; Free) Enter your transmitter and receiver location, and this simple calculator will help you determine maximum usable frequency.
iCluster DX DB (iOS; Free) This app allows you to create alarms for needed DX countries, call signs, modes and more with a nice, simple layout. You can also filter spot results with the same criteria. Use multiple cluster servers, including your own, via telnet or the web. The app is free, but if you pay a $1.99 sponsorship fee, it enables a map mode which shows DX on a map. DX Hunter (iOS; $9.99) is more advanced and even sends push notifications from spot servers.
DX Cluster (Android; $2.49) Much like DX Hunter, the primary purpose of this Android app is to operate in the background and send notifications when needed DX stations are spotted.
- DXFunCluster (Android; $1.13) Though reviews are mediocre on DXFunCluster’s Google Play page, SWLing Post reader, John, recommends this app as a DX cluster interface.
SOTA Goat (iOS; $4.99) If you like to activate summits (via Summits On The Air) or log them, this is a fantastic app. It’s one of the best designed apps for this purpose I’ve seen. SOTA Goat has a clear, intuitive interface, and is true to the iOS look and feel. Hands down, it has the best user interface of any ham radio application. With SOTA Goat in hand, you can plot and activate a summit while notifying the SOTA community automatically. Best yet, most of the app’s functions (including their summit database and map) are available offline! Yes, it’s $4.99, but if you’re into SOTA, it’s worth every penny.
CommCat Mobile (iOS; Free) With CommCat, you can watch DX spots, control your radio, and log contacts from anywhere an Internet connection is available. SWLing Post reader, Michael, comments: “With CommCat Mobile you can not only control your rig remotely, but you can log contacts and even sync that log with your home log! Not many programs allow that. Also, there’s a complete DX spotting list available, so with a single finger click, you can tune your remote rig right to the DX and then key the mic and talk into the iPhone / iPad to work the DX! With another single click the entire thing has been logged and sent to your home station!”
Shortwave Broadcast Schedules (iOS; $1.99/Android; $0.99) In my opinion, this is the best app for mobile SWLing. I used this app on my iPhone while travelling in Central America this summer, and could immediately pull up shortwave schedules even without an Internet connection. It has a very easy function for updating schedules, and can even be set to check for updates each time you open the app. Best yet, you can sort listings by what’s on the air now, by station, by time, by frequency, and more. Also, you can quickly pull up frequencies for a particular meter band at the touch of a button.
- Shortwave Radio Schedules (Android; Free) This app provides schedules and frequencies for shortwave radio broadcasts throughout the world. Information is also included on some utility stations, Firedrake, jammers etc. Broadcast frequencies and schedules are pulled from the Eibi schedule and AOKI Schedules. This app also features a unique map representation of broadcast footprints.
Global Tuners (Android/Free) This is a unique app that allows you to actively control remotely-linked receivers scattered across the globe. Whether you want to tune a receiver in France during your morning commute on the train, or if you’re a ham and want to check if your signal can be heard in Asia, Global Tuners can help. Click here for a recent post about Global Tuners.
- glSDR (Android; Free) SWLing Post reader, Paul N6EV writes: “glSDR is an excellent Android app which allows you to connect to a handful of SDR receiver servers around the world. For each server, the first connection becomes the “master”, able to control the frequency, mode, filter, AGC, dsp, etc. Subsequent connections are “slave” and have no control but get to listen. When the master drops off, the next slave in line (oldest connection) becomes the new master.” Click here for a map of available servers.
SSTV (iOS; $2.99) As with HF Weather Fax, simply launch the app, and place it in front of your radio. You can even leave it unattended and it will decode and save the images automatically. Supports all major SSTV protocols. This is also the best app I’ve seen for decoding pirate radio eQSLs on the go! Though I have not personally tested it, Android users might wish to consider DroidSSTV (Android/$6.99) which allows you to receive and send SSTV images.
Action Scanner Lite (iOS; Free) Easy to use, and loaded with scanner feeds. Although I prefer the search functionality in Scanner Radio (above), Action Scanner is a great app for iOS with many accolades. The developer has also published Action Scanner (iOS/$2.59) which has more Police, Fire, EMS and Amateur Radio feeds and Action Scanner Pro (iOS/$2.99-$4.19) which has the most comprehensive list of feeds and features.
- DroidNavtex (Android; $9.99) DroidNavtex decodes NAVTEX messages from your receiver through your phone/tablet’s microphone or through a connected interface. Special audio filters decode very weak signals through your Android device’s microphone. W4ASZ comments, “Droid Navtex has worked well for me using a Grundig YB400 PE operating off the internal ferrite antenna.”
Radio-Related Apps and Tools
Following are a couple of handy apps that, while not necessarily intended for ham radio, SWLing, or scanning, are nonetheless indispensable to me as a radio hobbyist; you may find them just as useful as I do:
TuneIn (iOS/Android; Free) This remarkable app turns your Android or iOS device into a web radio—it makes your local station a global one. I use TuneIn to listen to AM stations in Australia, music from Paris, The International Radio Report on CKUT, and even some international broadcasters that are no longer on shortwave radio. Indeed, only recently, TuneIn radio began streaming our own Shortwave Radio Audio Archive. I now have TuneIn on all of my mobile devices. TuneIn Radio Pro (iOS/Android; $0.99) gives you the ability to record streaming live radio directly on your phone. Note that (sadly) the Pro version does not eliminate ads.
As I mentioned before, this list is, by no means, comprehensive–these are simply some of the apps I feel are well supported and have had enough time on the market to shake out some of the bugs.
Do I really need a smartphone to experiment with apps?
I know many people who do not care for a smartphone and prefer the standard-featured flip phone. I, too, would be in this camp if I didn’t travel so often. The good thing is, there’s no need to buy a smartphone and then pay for 3G or 4G services to use the apps listed above. There are many devices that run iOS and Android that are not phones at all, and simply use WiFi connections for Internet access.
If you like Apple’s iOS platform, then you will want to consider an iPod touch, iPad or iPad Mini. If you prefer the Android operating system, then look at a no-contract Android phone or one of the many tablets on the market, like the Nexus 7. While the Kindle Fire is also based on the Android operating system, I’ve noticed that many of these apps are simply not available through Amazon. You’ll note that I did not cover the Windows mobile operating system; this is because there simply aren’t a lot of apps out there to choose from for this system.
In short, if you wish to use mobile apps for your radio activities, I would encourage you to consider only iOS or Android-based devices. A smartphone? That’s entirely optional.
What’s on my app wish list?
I would love to see a comprehensive app come along that has the functionality and utility of PC programs like FLdigi. This would make a mobile device perfect for decoding digital text programs like VOA Radiograms; it would also make them available to people who can’t afford or don’t have the infrastructure for a standard computer (as in many developing countries or even DXing locales). This may take more innovation on the processing front and more global adoption, but it is happening at a very rapid pace.
I would also like to see the ARRL develop an app for the popular Logbook of the World; for the serious DXer who needs mobile verification, this would be quite handy.
Ironically, mobile technologies have drawn many who might otherwise have become ham radio or shortwave radio enthusiasts––after all, these technologies make global communications seem effortless. Still, I find that nearly any technology ultimately compliments these hobbies: I turn to my smartphone for shortwave schedules, to conveniently decode Pirate Radio SSTV QSL cards, to listen to scanner feeds, and even connect to local repeaters and check in on nets. Indeed, the rapid pace of innovation on the app front is both encouraging and energizing, but also makes it challenging to keep up!