AmateurRadio.com

The Oseberg viking ship, 820 AD

Not so many nationalities are included in the exclusive group of countries with their own Q-code. I mean of course the QOD-code. I have never heard it used by radio amateurs, but it must have played a role some time ago in shipping.

The Q-codes date back to 1912 and were meant to be a short-hand for use in telegraphy. According to the list of Q-codes which Ralf D. Kloth (DL4TA) has on his web page, the meaning of QOD with a number added is: “Can you communicate with me in … 0 Dutch, 1 English, 2 French, 3 German, 4 Greek, 5 Italian, 6 Japanese, 7 Norwegian, 8 Russian, 9 Spanish?” As a response to the question the meaning was “I can communicate with you in …“

The reason for a separate code for Norwegian must be the historically large shipping fleet in Norway. This is still the case as graphically depicted in this overview of the Top 20 Ship Owning Countries, where we seem to rank as number seven – so QOD7 is appropriate!

But today all of them will QOD1.

Image from Wikipedia, user Karamell

Today started off with me continuing to compare the two morse decoders MRP40 and CW Skimmer in view of PC4T Paul’s insistence that the latter was the better morse decoder. When I heard someone calling CQ with no takers I took pity on them and returned their call. JY4NE and C6AKQ went into the log very quickly, in fact so quickly I was left wondering if I had actually worked them. Some people moan that all digital mode operators do is exchange macro files, but in a lot of CW QSOs you barely exchange anything!

Next I replied to a Russian station who was a bit more chatty. Unfortunately my logging program KComm locked up in mid-QSO. It was embarrassing because I was sending from the keyboard and didn’t even have a key plugged into the transceiver so I couldn’t continue. I’m sure there will be people who would add me to a blacklist for this, but these days I tend to treat CW as just another digital mode. Hence my interest in good decoder programs. 🙂

KComm has a feature where you can insert the answer to a multiple choice question into the outgoing text. It is expressed like this: %?question|answer 1|answer 2|answer3? which would cause a box to pop up saying “Question” and you click on the answer you want inserted. It was this feature that was causing the program to lock up.

After a couple of hours tracing code in the debugger I could not see what the error was, unless it was a bug in the Lazarus library software. The feature had been in KComm since many versions ago, but this current version was compiled with a new version of Lazarus, so that was a possible explanation. Eventually I managed to modify my program code to avoid the error, with the result that this afternoon there is now a version 2.02 of KComm.

I tested the update by having a QSO with Mik EW8O in Belarus. Then I decided it was time for a rest – I find debugging code these days is mentally exhausting!

For several years now  I have been of the opinion that the best Morse decoder for Windows PCs is MRP40 by Norbert Pieper. A few days ago Paul PC4T commented to one of my posts that he thought CW Skimmer was better so I thought I would give it a try in case I was missing out.

MRP40 decoding some Morse

I ran both programs simultaneously decoding the same signal. After listening to many QSOs I am still of the opinion that MRP40 is the best decoder. It decoded text more accurately and the spacing between words was better – CW Skimmer would often run words together then insert a space in the middle of a word. Skimmer also seemed on occasion to insert an spurious E at the beginning of some words or calls when I didn’t hear an extra dit.

MRP40’s decoder is less laggy than CW Skimmer’s – text appeared sooner after it was sent. I also found MRP40’s AFC useful in locking on to signals. It could track drifting stations and would adjust itself precisely to the signal if you didn’t click exactly on the trace. CW Skimmer seemed more fussy and didn’t decode a signal unless you got it spot-on. This is perhaps understandable given that Skimmer is intended to be able to distinguish between multiple signals in a pile-up.

CW Skimmer is the better program if you want to decode all the calls in a swathe of spectrum and if you want to link to your logging program so as to highlight new countries or prefixes and mark stations you’ve previously worked. That is, after all, what it has been designed to do. But as a morse decoder pure and simple MRP40 is still the winner in my book.

Those who are familiar with me will know that I wasn't even born when this LA3ZA QSL-card was issued in 1949. This is because I am second generation LA3ZA after my father. When the callsign was reissued to me in 2001 it had been inactive for 40 years or so.

I still have the Hallicrafters S40A receiver which my father used with a 2 W input homemade tube transmitter. The S40A (image below) was what introduced me to shortwave listening during the good conditions of the solar peak in the late sixties, despite its mediocre performance I would say.
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Introduction:

• Hacker Public Radio celebrates their 1000th episode!

Announcements:

• The Black Sparrow Media Mobile App for iPhone/iPad and Android has been updated. You can now listen to all of the old episodes, as well as new ones, via the app. wAVEgUIDES episodes are now included, as well. All streaming content is now available for iPad/iPhone. Please download and enjoy. It’s at the Google Play marketplace, as well as via the Black Sparrow Media website, and it’s still free!
• The LHS Hamvention fund drive was a success! LHS will be at Dayton Hamvention 2012, May 18-20, in the North Hall of the Hara Arena in booth 131, the same place as last year.
• Russ fixed a website bug that may have been causing some visitors to see the Black Sparrow Media site when surfing to LHS. Thanks to John, EI7IG, for pointing it out.
• Please sign up for the LHS mailing list at http://lists.blacksparrowmedia.net/mailman/listinfo.
• Please join the LHS subreddit and contribute show topic ideas, news of interest to our listeners, or just about anything else.
• Please tell your friends about the show.

Topics:

• Stan Horzepa, WA1LOU, in his recent Surfin’ column on the ARRL website, recommends open source Apache OpenOffice and the desktop publishing software Scribus. Note, LibreOffice is a fork of OpenOffice and is also quite functional. Both offer word processing, spreadsheets, database and presentations. Scribus may have a steep learning curve, but it’s a very powerful program. Easy tasks are easy to accomplish. Complex projects may take more effort to learn. Also note that many open source programs, like OpenOffice, Libre Office and Scribus, are available for Windows, OS X, as well as Linux.
• Take a look at the ham radio section at Linux Journal which also has links to their Ham Shack forum.
• Richard discovered several open source ham radio applications at Sourceforge: ircDDB_gateway, CQiNET, phppredict, contest loggers, fldigi, paclink-unix, OpenMOR, software for SDR radios, Ham Radio Net Logger, and more. So, don’t just look in your distributions repositories for applications. You may have to compile the programs from SourceForge yourself, but it may be worth the trouble.
• Finally, a reminder to visit KE2YK’s Random Oscillations website.
• An overview of ham radio apps for Android phones, available at the Android market, aka Google Play:
  • Morse Code apps:
    • Morse Decoder ($4.99)
    • Morse Code Reader (Free)
    • Morse Trainer Lite (Free)
    • Morse Trainer ($2.99)
    • Morse Code Trainer (Free)
    • Morse Code Keyboard (Free)
    • Morse Code Teacher ($3.99)
  • QSO Logging:
    • Amateur Radio Call Log (Free)
    • HamLog ($0.99)
    • Hamroid Free (Free)
    • Hamroid ($6.53)
  • Miscellaneous:
    • QSY (Free)
    • DroidPSK ($4.99)
    • DXCluster ($2.49)
    • DTMF ($2.49)
    • Echolink (Free)
  • A few more from Bill:
    • APRS Viewer (Free)
    • Ham Radio Tools (Free)
    • Who Is Calling Me? (Free)

Feedback:

• Ronny, K4RJJ, regrets that he won’t be able to act as the LHS ambassador at the Knoxville hamfest. If you’d like to be our representative at the Knoxville, or any other event, please contact us via the Ambassador link on the website.
• Roy, KK4ATD, reiterates how much fun it is to be an LHS ambassador.
• Chris, K4FH, says he offers a presentation at club meetings he calls Linux in the Ham Shack. He’s hoping Richard or Russ has some material they can share.

Contact Info:

• Contact Richard at [email protected], Russ at [email protected], or both at the same time at [email protected].
• Listen to the live stream every other Tuesday at 8:00pm Central time. Check the LHS web site for dates.
• Leave us a voice mail at 1-909-LHS-SHOW (1-909-547-7469), or record an introduction to the podcast.
• Sign up for the LHS mailing list.
• Sign up for the MAGNetcon mailing list.
• LHS merchandise is available at the Merch link on Web site. Check out the Badgerwear or buy one of the other LHS-branded items at PrintFection.com/lhs or Cafe Press. Thanks!
• Thanks to Dave from Gamma Leonis for the theme music.

Music:

• “Gunpowder Chant” by Diablo Swing Orchestra from the album “The Butcher’s Ballroom,” courtesy of Jamendo.
• “L.E.O.” by Oleg Serkov from the album “Epoch Symbol,” courtesy of Jamendo.

In a world first, or maybe just podcast first, the guys throw caution to the wind and actually product an episode with some real Linux and ham radio content. We know it’s shocking, but sometimes–just sometimes–a miracle happens and you get the belly laughs along with something to stimulate your gray matter. We can’t promise this will happen in the future, but this time you’re safe.

On the Linux side, Richard found an article on the ARRL Web site which leads to a discussion of OpenOffice (Libre Office) and Scribus, two excellent document preparation suites. On the ham radio side, Russ discusses some useful Android applications which might be helpful to those operators who want to use their devices for logging, CW training, PSK31 digital mode communications and more.

Thank you for all the donations to the Hamvention fund. Russ hopes to see as many folks as possible during his time at the show. LHS will be in the North Hall, booth 131.

73 de The LHS Guys

At last, I finally got the QRP keyer using KD1JV’s Simple Keyer Chip boxed and working.

The completed keyer

As usual, nothing went according to plan. There must be some relative to Murphy’s Law that states for any homebrew project the case will be just too small for comfort. A related rule is the one which guarantees that after you have drilled the case, the position of one of the switches or sockets will be in just the place where it fouls one of the components.

After my first attempt at getting it into the box the keyer was dead as a dodo. This turned out to be because I had forgotten to break one of the tracks on the Veroboard.

After the second attempt the keyer responded to the function button but there was no keying. That turned out to be because one of the connecting wires had broken at just the point where it was soldered. With my eyes as they currently are that took a while to spot.

When I had resoldered the connection and put the board into the case for a third time I noticed that another connecting wire was hanging on by one strand of copper. Lesson: don’t use hookup wire from China, it is made from inferior grade copper.

View from the front

View from the back

This had taken me a day, so I decided to put the project aside until I felt calmer. The next day I re-made all the connections using new wire, put the board into the case one last time and it actually worked! But Murphy had one last laugh: Now I couldn’t find the four screws for the Hammond case I was using. We searched everywhere. Fortunately my parts box had another Hammond case which sacrificed its screws for the benefit of the keyer. Later, Olga and I managed to find suitable replacements in the local DIY emporium so the other case won’t be wasted.

This Simple Keyer is just what I need for the simple QRP rigs that only work with a straight key. The code speed is easily adjustable and there are two memories, one of which can be repeated as a beacon. I don’t need more sophistication than that for QRP work.