AmateurRadio.com

For my friends celebrating Passover, here are the four questions in CW. First the “intro” question:

And the other four questions, a bit faster (so you can get on with the seder):

Text to Morse translation courtesy of Learn CW Online. The first part is at 20 wpm, the main four questions are at 50 wpm. (And no, I can’t decode that by ear either.)

Happy Passover!

The player embedded here requires HTML 5, which means you’ll need a pretty recent browser. If you don’t have one, you can right-click and save the intro and the questions.

I’m pleased to announce my Arduino CW keyer code is ready for prime time and available for download here.  At first this started out as merely porting my PIC keyer code to the Arduino, but the advanced features and ease (and joy) of coding for this platform encouraged me to venture further.  Beyond my original PIC keyer features, this creation also has a speed potentiometer, a serial port command line interface, more and bigger memories, QRSS, HSCW, and memory macros.  It also has a callsign receive practice mode, CW keyboard, and Hellscreiber sending capability.  I’m trying to figure out a way to interface with Ham Radio Deluxe and N1MM, and I have in the works a frequency counter option for use within homebew rigs, like my original PIC keyer.

The code is stable at this point, and I’m not aware of any bugs.  If anyone tries this code out and has bug reports, feedback, or feature requests, please drop me a comment.  Next I’m going to finish the Yaesu rotator computer interface.

I have a lot of ideas for an Arduino controlled antenna tuner swimming around in my mind.  After having two commercial automatic antenna tuners that were disappointing, I think I can build a better mousetrap.  The tuner will be a balanced L design capable of 150 watts or more, but still capable and accurate at QRP power levels.

Fun stuff!

When Work Gets in the Way of Ham Radio

Every now and then we hit one of those seasons of life where our work gets in the way of our hobby. For the past month, seems like work has overtaken the time and my radios have sat idle for WAY TOO LONG.

Thankfully, this weekend brings some relief and our Central Florida QRP group will take to the outdoors for our monthly outing. No one will be able to complain about the weather being too hot either, as the northland has sent us a reminder of why we moved to Florida. When it gets below 55F we get cranky and it looks like it will barely go above that temperature this weekend.

So look out for us this Saturday, 11 December 2010 about 1500-2000 UTC on the QRP watering holes on 40m, 30m, 20m and who knows where else. We’ll be out there with rusty fists on the keys once again. YAHOO!

72,

Kelly K4UPG PB #173

Two exciting new possibilities for portable HF have become available.

Steve Weber KD1JV's ATS-4

A few hours ago Steve Weber KD1JV announced that the ATS-4 kit was available again. These apparently sell out very quickly – so if you’re interested, act now!

Many people hanging around the AT_Sprint Yahoo group have been waiting patiently for many weeks for this morning’s announcement.

The ATS-4 is a “miniature 5 band CW rig with digital mode capabilities” designed for 80, 40, 30, 20 and 17 or 15 meter operation in the field. The AT stands for Appalachian Trail. It’s tiny – according to the KD1JV site, about 1/3 larger than an Altoids tin – the universal QRP standard of enclosure measurement – at 4.9″ wide, 2.7″ deep and 1″ tall.

ATS-4 features include a built-in Iambic A or B mode keyer with three message memories. The rig can convert Morse input via paddle to transmit as PSK31. And PSK31 and RTTY are possible using Pocketdigi software on a PC, laptop, netbook or PDA.

The other exciting portable possibility – which was designed to be independent of this kind of hardware – is the SDR Cube. George Heron, N2APB and Juha Niinikoski, OH2NLT developed this self-contained and portable SDR Transceiver using a Softrock front end and embedded Digital Signal Processing. One of the features of this design is that no PC is required. This follows naturally from George N2APB’s work developing the NUE-PSK modem which liberates portable PSK31 & RTTY ops from lugging along a laptop.

The SDR Cube

The SDR Cube is still available for ‘early-bird’ special prices, so again, not one to put off considering for too long. It’s also available in a range of different forms, from bare PC boards through to kits and assembled and tested. The design is deliberately open and flexible to accommodate experimentation. As the comprehensive SDR Cube site explains

The SDR Cube is a totally self-contained, embedded SDR transceiver for CW & SSB using a Softrock for the RF front end and a pc board implementation of an HF modem.  A PC is not needed for using the SDR Cube, as all DSP processing is accomplished by an embedded DSP processor on the three internal pc boards.  The Cube is designed to fit into an optional 4” x 4” x 4” pre-cut black powder-coated aluminum enclosure containing all controls, a blue graphic display showing the transceiver settings and an exciting 8 kHz-wide band scope of spectrum signals, and the popular Softrock RXTX v6.3 board.

Full ordering details for the SDR Cube can be found here.

Recently I began a project for a wire vertical antenna and it called for a 20 ft fiberglass or non-conducting pole/mast of some sort. Not to worry as I have a trusty 20 ft Jackite pole in a nice green color. I put the antenna together but the vertical wire was too long and so there was considerable slack wire swinging in the breeze. After some head scratching, I measured my 20 ft Jackite and found it was only 18 ft long!!! YIKES! Did it shrink?

Did it shrink? Nope, it is all good to go!

Thanks to the internet, I was able to send an email to Jackite products and ask if that was normal. In a short time, I received a very nice response from the Jackite vp and an offer that was over the top and way more than I was expecting. It was more than I could accept as I’ve been quite happy with the product otherwise. Turns out that it was a small quality control issue that I can tweak and correct personally.

I get no monetary or other gain out of this, but did want to give credit where credit is due. This level of customer support is often lacking in today’s busy world. I am glad to give a shout out to this company and its products! They do the job and the company stands behind them with good service. Outstanding job Jackite!

72,

Kelly K4UPG PB #173

Nice weather and an open schedule allowed for some radio time this weekend. The QRP ARCI Fall QSO Party made some buzz so I loaded up the gear and headed out by the lake.  I put up an 88ft doublet in an inverted vee. I shoot a line over a tree limb at about 40ft and use that for the center and have two 17ft Crappie Poles that I use for end supports. That allows me to reorient the antenna to suit the conditions.

Ground Mount Closeup

One of the things I threw together is a simple mount for the crappie poles. I use a 2ft piece of PVC with a couple bolts inserted at right angles to one another at the base to keep the pole from going all the way through to the ground. The PVC is attached to a 3ft piece of aluminum angle iron that with 3 stainless steel hose clamps.

Crappie Pole End Supports

The poles are pretty limber and take a bit of a bend but do a good job of handling the 24 gauge teflon wire I use.  As you can see in the pictures, the mounts do the job and don’t cost as much as commercial counterparts.

So it was a good day and I made a few contacts, enjoyed the outdoors and had a nice picnic lunch with my XYL down by the lake between QSO’s.  The bands were pretty decent and I gave points to 20 of the more serious contestants out there.

72,

Kelly K4UPG PB #173

p.s. The Polar Bears will be out and on the air next weekend. Give a listen, hear?

Remember when we used to think computers would save us time?

Why did we think the computer would save us time?

I spent the last 6 hours running updates, fixing the problems the updates created and figuring out how to install the updates that would not install automagically. Grrrrrrr!

Think I need some time to play radio, but I won’t be taking a SDR radio with me for a bit. Grrrrr…. need to recover from the 26 reboots and all the time wasted surfing and reading the small print.

Good thing there is a QRP ARCI event this weekend and the following weekend is our Polar Bear Moonlight Madness Event. Grrrr! I’m ready for some CW. CU on the bands!

72,

Kelly K4UPG PB #173