AmateurRadio.com

Enigma (Photo: R. Holm)

Bletchley Park, northwest of London (between Oxford and Cambridge), is one of the best known British sites from WW2. Its fame goes back to the breaking of the legendary Enigma cipher machine and its successor, the Lorenz cipher machine.

In order to perform this work a large effort in the development of early computers took place here. They include the mechanical Bombe for breaking the Enigma, and the valve-based Colossus for breaking the Lorenz.

The Bombe was reconstructed through a 13 year effort that resulted in an Engineering Heritage Award in 2009.

The Bombe machine (Photo: R. Holm)

Colossus was the world’s first electronic digital computer that was at all programmable. It was also finally reconstructed in 2007 despite most of the hardware and blueprints being destroyed after WW2.

I visited it with my oldest son who lives in Cambridge, and it was a fascinating place that made me want to learn more about the work done at Bletchley Park and in particular one of the founders of computation, the brilliant Alan Turing, who was treated so badly after the war.

From left: Henry Ehm (M0ZAE), Peter Davies (M0PJD), and Alan Goold (2E0GLD) on duty 5. April 2014

I was also impressed by the National Radio Centre run by the RSGB, callsign GB3RS, with its informative and well laid out exhibition and demonstrations.

They are able to keep it staffed for four days a week based on volunteers, and I really appreciated the hospitality and friendliness of the radio amateurs I met there.

If you ever come to London you should really try to visit this place. It is only a 36 minute train ride from London Euston station.

Sverre Holm, LA3ZA, is a regular contributor to AmateurRadio.com and writes from Norway. Contact him at [email protected].

Mellish Reef in the Coral Sea

This week I was happy to add to my logbook three contacts with VK9MT.  The well-planned and excellently managed dxpedition was operating from a tiny sliver of coral and sand about 500 miles northeast of the Australian coast, a barely-there island called Mellish Reef.  It was a new one for me (number 306!), and when they had to suddenly cut their time out there short because of threatening weather, I was especially happy I had been able to log them.  Now, as I write this, the exhausted team faces several days of rough sailing, trying to steer clear of the tropical storm that chased them off the reef in the first place.  We wish them godspeed and offer our thanks for their time, effort, and considerable personal investment in placing Mellish on the air for us.

There’s another reason I was so pleased to get a few brief contacts with this particular group and QTH, though.  Mellish Reef is located in the Coral Sea.  In May, 1942, a key naval battle was fought in the immediate vicinity.  The Battle of the Coral Sea actually changed the course of warfare since throughout the battle neither fleet ever laid eyes on the other.  All fighting occurred between airplanes flying off the decks of carriers, something that had never happened before.  The battle also was a tactical victory for the Allies.  It not only stopped the Japanese march to the south toward Australia but it also left the Imperial Navy two carriers short.  They were damaged at the Coral Sea conflict and unavailable for the historic Battle of Midway, a key factor in the first clear-cut Allied victory of WWII.

 

The Allied tanker USS Neosho ablaze after coming under attack in May 1942 in the Coral Sea, near Mellish Reef

I am now writing a book about a little known side story to the Coral Sea battle.  It is the tale of the sinking of two ships, a destroyer and a tanker, which were mistaken by the Japanese as an aircraft carrier and escort, an error that helped the Allies prevail in the battle the next day.  Just over 100 men were left clinging to the listing deck of the hulk of the tanker, awaiting rescue that would not come for four days.  Another nearly 200 men abandoned the ships and ended up adrift on life rafts without food, water or shelter.  By the time the rafts were found nine days later, only four of the men were still alive and two of them soon died.  It is an amazing story of human perseverance and bravery, but also one about how what happens in war is so often determined by error, coincidence, and sheer luck.  How many of those men might have survived if they had somehow found their way to Mellish Reef?

As an author, I look for human stories everywhere.  For certain, when I work a fellow ham anywhere–around the corner or on the other side of the globe, engaging in a rag chew or in a quick “59 TU” contact–I am always interested in what Paul Harvey called “the rest of the story.”  What is it like there?  What else happened there?  What does the OM do for a living?  What stories is he willing to share?

Remember when brave and resourceful ops put South Sudan on the air before most in the USA even knew a country with that name had been hatched?  I was recently thrilled to work the dxpedition FT5ZM on Amsterdam Island.  Now that part of the world is at the top of the headlines with the Malaysian passenger jet search.

Tonight, as the guys who worked so hard to give us a QSO from remote Mellish Reef continue their rough ride to what we all hope will be a safe return home, I can’t help but think of the other stories that have played out down there in that roiling, dun-colored sea.

73,

Don Keith N4KC

www.n4kc.com

www.donkeith.com

Don Keith, N4KC, is a regular contributor to AmateurRadio.com and writes from Alabama, USA. Contact him at [email protected].

Much to my surprise, I made my most distant contact ever with the Island of Guam (KH2L) yesterday. I’ve often compared chasing DX, or even regular contacts, with fishing because you never know what you’re going to catch when you throw the line in the water. Obviously, ten meters was very long. I was hearing very few contacts, but after a few brief attempts I was able to predict his listening frequency. This was a fine fish to catch at 7,775 miles.

I was barely 20 years old when I first set foot on this Island in 1968. My “sailing ship” was the USS Corry (DD-817) and we had begun that journey from Norfolk Virginia. We sailed South past Puerto Rico, transited the Panama Canal, stopped at Mazatlan Mexico, and then North to the port of San Diego California where we spent several days.

I was only a “kid” then and very prone to “peer pressure”.

No serious sailor, worth his salt, could be “tattoo free” after leaving San Diego. I was no exception and had my right shoulder etched with a colorful “US Navy Anchor” just before we left for Hawaii. We then set sail for Midway Island, where we re-fueled, and then westward again to Guam.

Guam was a very important strategic Island during the second world war. Only hours, after the bombing of Pearl Harbor, this island was invaded by the Japanese. The islanders were brutally beaten into submission and remained under their control for several years before American forces re-took the island.

Not to “harp” much about war, but in my reading about this island, I found an article about a Japanese soldier who lived in an underground cave there  for 28 years after the war. He was finally discovered by a couple of fishermen, captured, and returned to civilization on January 24th, 1972.

It is also with much embarrassment, the Navy “tattoo” on my right shoulder still glares at me every day. One thing I’ve learned over the years is “there’s NO glory, and NO romance in war”. Perhaps one day, we can all learn to just “get along” and accept our differences with each other. Adolescence is a horrible time of life for everyone. I’m extremely grateful for my maturity these days.

John Smithson, Jr., N8ZYA, is a regular contributor to AmateurRadio.com and writes from West Virginia, USA. Contact him at [email protected].

ARRL published an article, ARRL Calls for Timely, Visible, FCC Amateur Radio Enforcement , on April Fool’s Day.  Initially I was expecting it to be an April Fool’s joke, but it’s not.  I think ARRL is spot on.  Despite two recent cases that I can recall where amateurs relinquished their licenses or had significant fines imposed, FCC enforcement has been rather quiet since Riley Hollingsworth retired in 2009.  Remember who took his place?  I had to Google it to remember.  That’s not good.

Anthony, K3NG, is a regular contributor to AmateurRadio.com.

After I mentioned running a PSK program on my iPhone the other day, my friend Simon asked which one it was and whether it was PSKer. That was a program that I hadn’t heard of, so when I had a moment yesterday, I decided to investigate.

PSKer looks a very nice program and I decided to give it a go. When I got back to the car yesterday evening, I ran it up and set the receiver running on 28.120. There was plenty happening.

PSKer seems to decode a little easier than the Multimode program I was using the other day. I haven’t yet tried it on transmit. However, I did discover that it can be set to send tones through the speaker, rather than the earphone socket, which is what you want when you are too lazy to make up a lead!

Tim Kirby, G4VXE, is a regular contributor to AmateurRadio.com and writes from Oxfordshire, England. Contact him at [email protected].

The QRP-ARCI Spring QSO Party is today and tomorrow. I’ve been on for a bit today and so far band conditions seem to be downright horrible.  It seems I have an S5 noise level on just about every band except for 10 Meters, and there’s not much in the way of activity.  I’ve worked three stations so far, including EA2LU on 10 Meters. Jorge is very active in just about all the QRP-ARCI contests.

Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

The SOTA Management Team recently authorized a group of qualifying summits in South Texas. These summits are located generally west of San Antonio in the Texas Hill Country. The elevation of these summits range from ~1700 - 2200 feet ASL. All of these new summits are only 1 point summits, however, they are new and have never been activated which begs for someone to do them for the first time. So today, I was the first to activate a South Texas Summit.

I have only done limited research and actually stopped looking when I found the first accessible summit. The summit, named "2002" for it's elevation because it is otherwise unnamed. The summit is an escarpment, which is defined as, "a long precipitous, cliff-like ridge of land, rock, or the like, commonly formed by faulting or fracturing of the earths crust".  Peak 2002 is just that with a summit ridge that runs for nearly a mile. Accordingly it has a large activation zone. (In SOTA, the operator doesn't necessarily need to transmit from the actual summit, in Texas the activation zone is anywhere within 150 vertical feet of the summit). The majority of the summit ridge is on private land, however the eastern third of the summit lies within the boundries of the Texas Hill Country State Natural Area. So an easy, state park hike, should be easy.


Looking at the layout of the park, the ranger told me which trail would get me to the summit ridge, trail 4B. I downloaded the map and the trail was in the middle of the park, but I would be able to drive to the trail head right, wrong. The Ranger informed me that because this is a Natural Area I would have to walk. What I thought was, at most, a 2 mile round-trip was now a 6 mile round-trip. Wait a minute this is just a 1 point summit. But I was there, but I knew I didn't have enough water for 6 miles, so I bought a bottle of water at the Park Office, got directions and took off.

So what was a 2 mile round-trip which had now become a 6 mile round-trip, turned out to be nearly 8 miles. I missed a trail due to a poorly marked trail sign and was almost a mile down that trail when I realized my error. So I had to back track and get on the right trail. Finally 1 hour and 40 minutes after leaving the trail-head I reached the summit ridge.

From that point, it was a fairly normal activation. I used my MTR and a 20/40m EFHW and my Pico Paddle. I managed 22 QSO's with the first being AE4FZ and the last being KD5KC, Mike who did the bulk of the work to get the additional Texas Summits approved. Thanks Mike. I was also able to work a little DX with OK1CZ calling in on 20m.

So this was another SOTA first and I'm glad I was able to be the first to activate a South Texas Summit. I will have to say though, this was the toughest SOTA point I ever earned. Eight miles of hiking for 1 point, the miles per point is pretty high. If you extrapolated that ratio to a 10 point summit a person would have to walk 80 miles. Well as they say, everything is bigger in Texas.

Thanks to all the chasers and thanks again to Mike KD5KC who was a catalyst in getting these summits approved.
Mike Crownover, AD5A, is a regular contributor to AmateurRadio.com and writes from Texas, USA. Contact him at [email protected].