brainwagon "There is much pleasure in useless knowledge." — Bertrand Russell

5Oct/090

Real-Time Rendering · SIGGRAPH 2009 Course Pages

I didn't make it to this year's SIGGRAPH, but I still try to keep up on my reading. There are several nice courses that occurred, and the guys over at the Real-Time Rendering blog were nice enough to link 'em for us. Enjoy:

Real-Time Rendering · SIGGRAPH 2009 Course Pages

5Oct/090

BROADCAST YOUR PODCAST

Well, this isn't quite amateur radio in the sense of ham radio, but it's a cute and potentially useful project: a simple fm transmitter that uses only a single transistor, and is built "Manhattan style" on a scrap of PC board. If you've been looking for an excuse to try Manhattan construction, this might be a fun, low risk project that requires only the most minimal of investments.

BROADCAST YOUR PODCAST.

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5Oct/090

More on the Softrock Experience…

I am not really that much closer to figuring out why opposite sideband rejection is so poor, but I downloaded a couple of different SDR programs in the hopes that they might provide some diagnostic which might point more at the exact cause. Rocky still seems to be the best. PowerSDR seemed to work and has many cool features, but also seemed to pop and glitch occasionally. I also tried KGKSDR, which is a nifty program too, but which gave a glitch or two as well. I think the take away from all this is that sound cards suck.

But, a couple of interesting milestones with this: I decoded my first SSB signal with it yesterday (nifty!) and also my first PSK31 signal (Rocky has a built in decoder).

Oh, and I spent some time looking for a new scope. No luck yet.

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