Ubuntu and Amateur Radio for Ubuntu Open Week

Please join us on Tuesday, May 3rd at 16:00 UTC for:

Ubuntu and Amateur (Ham) Radio for Ubuntu Open Week

Steve Conklin AI4QR, and Kamal Mostafa KA6MAL

Curious about what you can do with Amateur Radio and Ubuntu?
Curious about Amateur Radio in general?

Steve and Kamal will take questions and do their best to answer them.

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Amateur Radio is a hobby and a public service enjoyed by at least a million people around the world. Whether you are interested in transmitting and receiving radio signals around the world to meet new people, in being of service after disasters, or in the technical aspects, there is probably something for you.

Amateur Radio covers a huge number of interests, including local and long distance communications, emergency communications, satellite communications, digital networks, competitions, and electronics design.

Ubuntu offers many software applications related to Amateur Radio. We’ll discuss some of our favorite apps for use in the “ham shack”, and show how you can receive and decode digital conversations and telemetry with Ubuntu and any shortwave radio receiver (no Amateur Radio license required!).

We will be holding an open Question and Answer session:

When: Tuesday May 3rd at 16:00 UTC

Where: In the #ubuntu-classroom and #ubuntu-classroom-chat channels on freenode IRC.

For more information about IRC:

Here’s a web client for IRC:

You don’t have to wait until the session to learn more about Ubuntu and Amateur Radio and meet other interested people. Check out our team information page or drop into #ubuntu-hams on freenode IRC.

73, DE AI4QR

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Back in business

I changed domain registrars, and this resulted in a hiccup that I’ve now solved. The site was inaccessible for the last few days, but as soon as the DNS records propagate, everyone should be able to get here again.

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Transatlantic balloon attempt coming up!

White Star plans to launch a transatlantic balloon flight attempt at 0000 UTC (Thursday evening for most of the US). If you’re a ham operator set up for digital modes, you can monitor the telemetry transmissions on the 40m band and automatically report them. The flights predictions call for a three day flight.

Here’s the White star site

Here’s a link to their HF radio info page

Telemetry data is received and reported using the dl-fldigi application. The project page for that is here, but if you’re running Ubuntu Linux, just grab it from this ppa.

During the flight, you’re likely to find other people who are following the action in the #highaltitude chat on freenode IRC.

Also if you’re a ham using Ubuntu, check out the Ubuntu-hams team, or drop into the #ubuntu-hams chat on freenode IRC.

It can be a lot of fun to help track the balloon flights. Here’s a previous post I made about a tracking adventure.

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How to really help in a disaster

A few words about disasters . . .

The best way to help the people in Japan is with cash.

Blankets, shoes, books, and other physical goods are counter-productive. Cash travels to the most effective place for the acquisition of the most needed materials, to be transported to the place of need.

I recommend donations to the Red Cross. They have a good track record, don’t have a high administration overhead, and are neutral in politics and religion.

Now, about local disasters . . . How can you help?

By volunteering and being trained now, before the disaster. There’s not much use for untrained “spontaneous” volunteers after a disaster. But there’s a great need for trained volunteers. The training isn’t hard. No matter what your everyday skills are, they can use you in a disaster. I’m a Red Cross volunteer, ready to use my skills in amateur radio to provide communications either locally or in any place where I’m needed. Working in a disaster zone requires all sorts of help – administration, logistics, driving, damage assessment, feeding, shelter operations, and IT operations. So even geeks have a place.

When it all goes wrong, you can be another mouth that needs feeding or sheltering, or you can have the skills it takes to help.

Call your local Red Cross chapter and ask about how to become a trained volunteer.

 

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The Second Cooler, a documentary film

The Second Cooler is an amazing film. I’ve been following the production sort of third hand, as I know someone working on the project.

Martin Sheen and Microwave Dave? Good projects pull great people.

If you are so moved, they could use some cash to wrap it up.

 

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A great QRP (low power) ham radio story

A nice story with a big finish . . .

Today I saw a tweet pointing to a post on my friend Alan’s blog – announcing a local launch of a high altitude balloon by Bill, WB8ELK. With a couple of hours before the launch, I found and downloaded dl-fldigi, which is used to receive telemetry and report it to a central site for realtime display. dl-fldigi is a modified version of the digital mode application fldigi.

I caught my friend Kamal KA6MAL on IRC (Internet Chat), and he fired up his copy of fldigi to see what he could copy from his location in California. With the unmodified version of fldigi, he would be able to read along, but the telemetry wouldn’t be reported to the tracker.

The actual launch was a little late, but shortly after the balloon gained some altitude, I was able to receive the signal using both Domino and RTTY modes. As the balloon got well over Georgia heading East, I first lost the ability to copy Domino without errors, and then lost RTTY.  Even after this I was able to read a couple of transmissions of altitude in Hellschreiber mode. The telemetry transmissions were a sequence of CW, Domino, Hellschreiber, and RTTY every minute.

Reception was very difficult because there was an active RTTY contest, with signals all around and on top of the 14.102 MHz center frequency.  I’m also on the wrong side of a hill near my house for good reception from the east. I found out later that the balloon transmitter was only putting out 1/2 watt of power, so I’m pretty happy with what I did hear.

People listening for the balloon were able to receive the telemetry through the ascent phase and most of the descent, but the last signal reported was at an altitude of 8358 meters, just East of Raoul, Georgia. Here’s a look at the tracker map:

Balloon launched from Huntsville, to Georgia

After a while, it was certain that the balloon was on the ground, but the landing position wasn’t known with certainty. Then, Kamal said on chat that he was seeing the signal, and even managed to capture one perfect frame. Kamal lives in southern northern California. Now that’s QRP – over 2000 miles on half a watt! The actual landing location is about twenty miles further East than the last position on the tracker map shown above.

What a great way to spend an afternoon, and I know that Kamal is happy!

Bill said in email that the reported altitude after landing is about 60 feet above ground level, which sounds reasonable, considering that google maps shows a reforested pine timber grove at the landing site.

Bill does a lot of balloon flights, and they’re fun, even if all you’re doing is receiving telemetry. If you’re interested, keep an eye on this project – White Star Balloons – They’re about to attempt a transatlantic balloon flight, and will be transmitting telemetry on the 40m band.

UPDATE: Corrected the fact that Kamal lives in Northern CA. Also, here’s a screenshot he sent me of some of the Hellschreiber he received. He said the same thing in his email that I was marveling at while I was receiving Hell mode – the human mind has an astounding ability to pull meaning out of the noise when presented with the visual image. I could read the Hell images when there was no chance at all of receiving the other modes.

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This isn’t the first time I’ve seen pricing like this

ebook version twice the cost of hardcover?

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