Archive for month: April, 2012

K3MGY, the Titanic Special Event Station

April 18, 2012 | Amateur Radio | By: Mark VandeWettering

On this past Saturday, April 14th, I was tuning around to see if I could pick up one of the stations which was activated to celebrate (is that the right word) the 100th anniversary of the Titanic disaster. I quickly found K3MGY in Baltimore, and recorded an hour of their operation on twenty meters. Not […]

A cool JT65 QSO…

April 15, 2012 | Amateur Radio | By: Mark VandeWettering

Last night I got home from a day spent with new-baby-relatives, and decided to power up the ham radio setup and see if I could snag any good QSOs via JT65. The bands weren’t really all that good for me, but heck: it’s JT65, and it always seems to present something. A few minutes later, […]

fldigi now includes WEFAX reception…

April 10, 2012 | Amateur Radio | By: Mark VandeWettering

Okay, nothing really more to say: fldigi now has WEFAX reception. I decided to try it out on transmissions from Norfolk, VA tonight. Not bad (although I think my own receiver works a bit better). Still, it’s nice to have them in one place. Now, all that fldigi needs is JT65A, and life would be […]

Russ Cox muses about Fields and Reed-Solomon codes

April 10, 2012 | Computer Science, Math | By: Mark VandeWettering

I’ve been pretty interested in codes of all sort, both the cryptographic codes and the codes that are used to provide error detection and correction. While I’ve played around quite a bit with convolutional codes, I haven’t really every bothered to develop more than a cursory understanding of the Reed-Solomon error correcting codes which have […]

My first week of JT65..

April 8, 2012 | Amateur Radio | By: Mark VandeWettering

Over the last week, I started playing around with JT65-HF. JT65-HF is a digital mode, which is good for only the most basic of information exchanges: grid square, signal levels, and perhaps a very short 73 message. But it’s got some cool features. It operates on low power, and can automatically log any callsigns you […]

My first crude DCPU-16 simulator…

April 6, 2012 | Computer Games, Operating Systems, Programming Languages | By: Mark VandeWettering

A few days ago, I mentioned that @notch, the creator of Minecraft, had a new idea for a space game that he was beginning to work on. One of the features of this game is that your spaceship would be controlled by a simulated computer that you could program. He released a preliminary specification for […]

My First True Boat Anchor: A Collins R-390A

April 5, 2012 | Amateur Radio | By: Mark VandeWettering

My boss is retiring, and as part of his downsizing made me an offer that I couldn’t refuse. I’m now the owner although have not yet taken delivery of) a vintage receiver: the Collins R-390A. Here’s a pic of it, in all it’s vintage glory: Here’s the thing: I’m mostly completely out of my element […]

Free to Play (F2P) games

April 5, 2012 | Amateur Radio | By: Mark VandeWettering

I follow @notch (author of the near legendary independent game Minecraft, where I have spent more than a few hours). I think Minecraft showed considerable creative thinking, and tapped into a need for a kind of gameplay that wasn’t well satisfied by other typical genre games. I’m following somewhat eagerly his postings about his new […]