Tag Archives: DS2202

AFSK packet investigation

Posted on 2013-11-04 by James

To further my investigation as to why the soundmodem TNC appears to be flaky, I decided to scope the output of some local APRS transmissions. After setting the squelch to the point where no background noise was seen / heard, … Continue reading →

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More testing …

Posted on 2013-10-12 by James

I thought that I would do a little more side-by-side comparison between the transformer and the capacitor methods of signal isolation. My test bench consisted of: DG1022 function generator DS2202 oscilloscope Sound Card Interface v0.11 As I found that there … Continue reading →

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Sound Card Interface v0.11 – initial testing

Posted on 2013-10-11 by James

So I received my v0.11 boards back from the fab house and soldered one up last night to begin testing. I managed to squash a few bugs in the initial design, as well as identify a couple of new ones … Continue reading →

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New test gear & and update

Posted on 2013-06-27 by James

So I’ve been very bad at updating lately but to be honest, there hasn’t been a whole lot to say! Back in April, I placed an order for some test equipment which I’ve been drooling over for a few years. … Continue reading →

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