AmateurRadio.com

Yes, I did it again. Needed a 25 cent Molex connector and while browsing the electronics supply store I bumped into a rack with Arduino stuff. Maybe it was the Buddhist music playing in the background (the owner of the store is a devout Buddhist and only meditative music is played in the background), but I suddenly felt the urge to buy one. Now remember, I have a love-hate relationship with computers. I prefer having nothing to do with them, but since I cannot avoid them I just go with the flow. Apart from that, I never really got the coding bug.

But for some reason the urge was too strong this time. And so I spent 15 bucks on a Arduino Duemilanove and 3 bucks on two add on boards: a 3 color LED and an analogue temperature sensor. Not much money to try it out and if I don’t like it then no big loss. Because of the name alone you should buy one, too. Can you name me an electronics product with a sexier name than Duemilanove??? And it just means 2009!!! Sometimes I wish I married an Italian girl, then I would be living in Italy now and be immersed in that wonderful language every day.

Back home I found out that installing the IDE was a simple “sudo apt-get install arduino” and I was connected. It took me all of 15 minutes to get the 3 color LED blinking and I was hooked. This is not difficult at all and a lot of FUN! Now it’s not that I have all the time in the world to start learning to write sketches now. Far from it, I’m as busy as ever. But after introducing the Arduino to my 11 year old son he started playing with it and it took him an hour to make the LEDs blink his name in Morse code (because that’s the only Morse code he knows). This might turn into a nice father-son play-thing and who knows, maybe I finally start to get the coding bug.

http://youtu.be/yIOpwHVJVb8

Hans "Fong" van den Boogert, BX2ABT, is a regular contributor to AmateurRadio.com and writes from Taiwan. Contact him at [email protected].

 

 

• Ham radio responds as a pair of tropical cyclones hit Australia
• The FCC and the FDA look the future of medical remote electronics
• Printed FCC issued ham licenses come to an end
• Stunning images received from the latest ISS slow-scan television experiment
• And the nominating period opens for the 2015 Amateur Radio Newsline Young Ham of the Year Award

 

THIS WEEK'S NEWSCAST

       Script

      Audio

 

This afternoon, I have been trying out the President Lincoln Mk2 (V3) which arrived early today. I have only tried on SSB but it seems to work, with the first SSB QSO being with N8II in West Virginia at about 1430z. He was using 800W and a 5 element beam! It was hearing plenty from Asia, Europe and North/South America. Maximum claimed power from the Lincoln, controlled by a rotary control on the front panel, is 31W  PEP on SSB.

Lincoln Mk2 with the other rigs

I have still to fully get to grips with the menu but it seems pretty intuitive.  There is a choice of display backlight colours, but I find green easiest on the eyes. The other choices are blue and orange. You can alter display brightness and lots of other features – I shall have plenty of time to play.  Blue is not good for my eyes on either the Lincoln Mk2  or the FT817. To my eyes, blue is hard to see, whereas the green is very clear.

My biggest issue was getting the power leads attached to the PSU.  Before my stroke this would have been trivial.  Now it tires me out! I wanted several rigs attached to the PSU at the same time so soldering the plugs on was non-trivial. As you know, speaking too long exhausts me,so I am taking a break.

I am waiting for my 12V battery to charge to test the 40m Pixie. Visually the Pixie build looks fine.

At the moment I am not on WSPR on any band.

Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

I have come to the conclusion that it is better to be disabled in a visible way than  have a disability that cannot be seen easily. On a walk this afternoon at Anglesey Abbey there were quite a few people who were clearly disabled.

My wife says when I walk you cannot tell I have a disability. Inside, I still feel like I am drunk, I tire easily and I still feel wobbly when walking.  My voice is still poor and swallow of thin liquids is poor.

Most people think I am fine now. I am still a long way from that although I still feel I am making slow improvements.  My current disability is invisible to many.

The ongoing after-effects of my cerebellum brain bleed are the reason I try to avoid too much speaking on the air. WSPR is my favourite mode as no talking is needed. JT65 and JT9-1 are my favourite 2-way digital modes. Although I have used PSK31 I don’t much like it as too many use macros.

Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

This morning I completed the wiring of the test-bed MOPA's Hartley oscillator circuit. I was using the 80m tank at the time, wound with 3/16" copper tubing. Oscillator keying is about what I expected ... stable but with some ripple on the note. Even with DC on the filaments, many of these open-breadboard oscillators suffer from RF-modulated notes. Sometime wrapping the power supply or keying leads in a ferrite toroid help or eliminate the slight rasp. On the other hand, some builders prefer to have a note that sounds more '29-like, as in all likelihood, not many notes sounded like pure DC back in the day.
I'm really having second thoughts about my construction method and may just jump to the next (final) construction phase rather than slog through completion of the test-bed model. I've already learned much about the layout by getting to this stage and the extra work involved in completing the test-bed model may not tell me anything new.



I'm using a VT-25 version of the somewhat pricey and hard-to-find type '10' tube. The final version will be built in a similar fashion to my Tri-Tet-Ten, on an aluminum sheet atop the breadboard. Hopefully having the groundplane and shorter leads, will lead to a cleaner note in the final version.

I'm rather dreading this next final phase as there is little room for error. The aluminum sheet must be precisely pre-drilled, as well as the breadboard, and protected at all times (especially when making soldered connections) to prevent any finger marks or scratching on the aluminum sheet. There are still several drilling details to be worked out before I can move forward.


Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

As a young boy I recall listening to long distant A.M. radio stations in the evening on my transistor radio. As a young boy I had two hobbies that thrilled me, that was rock collecting and electronics. At a very early age my parents would buy me Radio Shack perfboard kits, 101 in 1 project kits and then an AM radio kit to build and then I was fortunate enough to get a Radio Shack Globe Patrol SWR to put together and listen to the world.

But what I recall most of all was having a tie to many of the local AM stations as I had an Uncle who was a DJ on many of them and then he eventually became Chief News Editor in Thunder Bay for CBC (CBQ). In the day we had 3 A.M. stations that ran full time, 580 CKPR , 800 CBQ and then 1230 (CJLX, CFPA), and then not being too far from Duluth MN where we are located I could usually hear at least 2 stations from there both day and night, one in particular was around 560.

I best recall listening to many programs at night, everything from Grand Old Opry, CBS Mystery Theater, The Great Gildersleeve and The Life of Riley, Dragnet and others. Of course WLS 890 was always loud here in Thunder Bay, ON (Formerly The Twin Cities of Fort William and Port Arthur)

There are no more A.M. stations in Thunder Bay, all have migrated to F.M., however as you drive along the North Shore of Lake Superior you will find many low power A.M. stations that rebroadcast some of the larger stations.

Here is a look at a few of the reminders of those once powerful and notable stations that once took on the air waves.

Fred Lesnick, VE3FAL, is a regular contributor to AmateurRadio.com and writes from Thunder Bay Ontario, Canada. Contact him at [email protected].

Ham College episode 2 is now available for download.

Ham College, the new show for those new to the hobby and those wishing to get into Amateur Radio.

In episode 2 we’ve got early Radio Receiver History, a Crystal Radio Demonstration, 12 more questions and answers from the Technical class question pool, and more.

1:00:37

Download
YouTube

George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at [email protected].