Here's the video of the ZL3IN c2qso.sh contact. Remember, this is just raw UDP packets over the internet, with no error correction, and you're hearing the Codec2 audio just as it was transmitted in the conversation.
Yes, Zilvis, the audio was duplex. With my shell script, if both sides keep 'transmit' on, it will operate duplex.
While codec2 might be useful for general Internet comms in certain circumstances, in general I think the higher bandwidth codecs are a better idea for Echolink, etc. For hams, codec2 will shine in digital voice systems similar to D-star.
I've built the QFH antenna recently published in QST. The result is very omni-directional, as advertized; but I found the construction rather difficult. Here are some notes on the process.
Ontario's new distracted driving legislation apparently does not have the exemption for two-way radios that many similar laws include. Indeed, at first glance, it seems that the situation in Ontario is far worse than south of the US border. In my opinion, though, the battle over distracted driving is one that the international amateur radio fraternity probably can't win and in some circumstances ought not to fight. Instead, we should use the Ontario situation to do what we do best: look for technical solutions to this problem and highlight our ingenuity in the face of changing social norms.
Lots of progress with 'satpack', my Arduino-based full-doppler-tuning satellite tracking application. On the right, you see a cardboard mockup of the pcb. On the software side, I've checked a fully working version of the code into the SVN repository.
Great video! And audio too! Was that full duplex comms?
ReplyDeleteAlmost half step to the next Echolink incarnation (multiplatform, oss) hi
Best 73! Zilvis
Yes, Zilvis, the audio was duplex. With my shell script, if both sides keep 'transmit' on, it will operate duplex.
ReplyDeleteWhile codec2 might be useful for general Internet comms in certain circumstances, in general I think the higher bandwidth codecs are a better idea for Echolink, etc. For hams, codec2 will shine in digital voice systems similar to D-star.