Amateur Radio: D-STAR assists recovery

For a couple of days now, I have been following, remotely, the recovery of an amateur radio operator who, in his thirties, is recovering from a serious stroke, which came in the wake of tumor surgery. The stroke left him paralyzed and with a serious speech impairement, at least temporarily.

In rehabilitation, his family set up for him a local access point to the amateur radio D-STAR digital voice communication network, which he now can access with a small handheld transceiver. Now that his speech is returning, he is supposed to practice as much as possible – and his ham radio transceiver allows him to do just that. A few days ago, he told how difficult and tiring it was, but he kept on going. His speech gets better everyday, and due to the connected network of digital radio repeaters, his radio friends all over Germany share in his delight.

My new toy – Elecraft K3 shortwave transceiver

Early may blesses us with summer-like temperatures. Time for a backyard fieldday with my brandnew Elecraft K3 tranceiver, and the Buddipole configured as a quasi-vertical dipole.

Germany’s best cities – Ulm is No. 3

The reputed German weekly Wirtschaftswoche, which focuses on economics and business administration, published an exclusive ranking of Germany’s 100 largest cities. It looked at diverse criteria – wealth, security, employment, perspectives for the future. A surprising result – the medium sized cities fare frequently better than quite a few  big and better known metropolis. Ulm is a striking example: it was ranked as No. 3.

Ulm scored big with its efficient administration, its low unemployment, and its low number of people dependent on welfare. The study saw improvement opportunities in the area of employment among older citizens, and the number of places in day care centers. However, as the article said, you have to use a magnifying glass to find real weaknesses in Ulm.

So who’s ahead of Ulm? Ingolstadt, home of the Audi cars, and Erlangen. And Munich, everyone’s favorite city? No. 4, just behind Ulm. Stuttgart, our state capital, didn’t even make it into the top 20.

EEEfCOM Innovation Awards: two out of four

EEEfCOM Innovation Award is a well-known German prize for innovative ideas in communications close to practical applications. It is offered by Gerotron Communication GmbH, with the help of other corporate sponsors, and attracts many submissions from German speaking countries. This year, two out of four awards went to groups from Ulm University.

A team from the Institute of Microwave Techniques, led by Peter Feil, was rewarded for their work on Millimeter-Wave Synthetic Aperture Radar for Surveillance and Security Applications. The fourth place was awarded to Bernd Schleicher of the Institute of Electron Devices and Circuits for his work on FM-IR-UWB – a simple Communications Concept, which describes how legacy FM short-range communication links can be easily converted to use the new impulse radio ultra-wideband frequency allocations in the GHz range, which can be used license free, yet are largely unused at present.

Read more: Gerotron Press Release “Ausgezeichnete Ideen” (in German)

Asbestos: Germany’s “Library of the Year” closed indefinitely

Two week ago, the University of Konstanz’s library was celebrated as Germany’s Library of the Year. This last week, it had to be closed until further notice when Asbestos fibers were found in several parts of the building.

Interestingly, and luckily, the fibers were absent in air samples, but found on top of shelves and on books. The facility needs to be cleaned (by specialists), but more importantly, the source of contamination will have to be identified and eliminated before the library can re-open.

Before Facebook, there was Ham Radio

Much is written about Social Media and how they are revolutionizing the way we make friends, maintain relationships, independently of geographic location. And in the typical hubris of our times, we forget that mediated relationships are anything but new.  For many youngsters from rural communities (like myself), the ticket to personal contacts on a truly global scale was ham radio, ever since the beginning of the twentieth century.

Ham radio was not free for all. You had, and still have, to pass an exam to obtain your government license. Yet, the licensing requirements creates an instant esprit de corps, the feeling of belonging to a select group – something that is thoroughly lost in the free-for-all social networks of today.

But once you got your ticket, you accessed a virtual network in the true sense of the word: without boundaries, without infrastructure, owned by nobody, governed by laws, yes, but more importantly by a general consensus called the ham spirit.

Early years of wireless telephony – of inventors and rigged demos

Frederick Collins operating his radio telephone, 1904

A recent visit to the excellent American Museum of Electricity and Radio in Bellingham, WA, drew my attention to the somewhat tragic inventor and writer Archie Frederick Collins.  Collins was born in South Bend, Indiana, in 1869, and died in Nyack, NY, in 1952. Please refer to the Wikipedia article for further biographical information. Collins had the idea of connecting a carbon microphone between an arc radio frequency generator and the antenna, modulating the antenna current with sound picked up by the microphone. The radio frequency current from the arc generator was passed through resonant circuits using large inductive coils – we would call this today a bandpass filter with high quality factor. From Collins’ own accounts (in 1905), he first tested his ideas in an experiment, over a distance of 200 feet, in 1899.

After obtaining a patent on his modulation technique, he set up his own company and began efforts to commercially exploit wireless telephony, claiming to have spanned a distance of 81 miles, between Newark, NJ and Philadelphia, PA in 1908. The same year, Marconi examined Collins’ setup and gave him credit as the inventor of wireless telephony.

But in his quest for commercial success, Collins was badly side-tracked, or as sparkmuseum.com aptly puts it,

“this technical visionary formed partnerships with businessmen of questionable character – men more interested in making a killing in wireless stock speculation than in building a successful company.”

Gruorn revisited

Today, we went to a splendid breakfast in the old schoolhouse in Gruorn (“The little village that was” in my earlier blog article).

I stand corrected on what I wrote about the recent history of the place. The houses were not razed in the 1930′s, after the villagers were forced out to make room for the expansion of the military training grounds. The houses were merely left to decay.

An American Tragedy (with reference to Theodore Dreiser)

He had the looks of a scruffy Santa Claus, so let’s call him C. The long white beard, a head of full white hair, a weathered face in between. When I first met C. he lived in a low rent appartment in small town New Jersey. His alcoholism made him a frequent customer of our volunteer rescue squad.

There was something odd about C. When sober, he spoke a very elaborate English, completely out of line with his social status of the day. He would show up at church potluck dinners and engage the pastor in lengthy theological discourse. Occasionally, he would relate to the life he had had, graduating from Brown University, and working for a TV advertising agency in Manhattan. We did not take that seriously at the time, we heard too many similar stories from the homeless, even though his demeanor provided some credibility.

Some of us called him the Reverend.

Skiing Perversions

German news broadcaster B5 aktuell reported today about advances in snow making, which the Alpine tourist industry hopes will counter the effects of climate change.