“This will be the year” for digital voice to explode in Ham Radio. That’s the prediction from David Rowe VK5DGR. David created CODEC2, the first open-source, really low bit-rate voice codec for amateur radio and more. He’s got several projects cooking to make digital voice work better and for more uses, on HF and VHF/UHF.
This program covers three related topics:
– The SM-1000 “speaker-mic” for FreeDV on HF.
– Improvements in CODEC2 and FreeDV aimed at making it work as well or better than SSB in weak-signal and noisy HF conditions
– A new VHF system using TDMA for one-frequency repeaters that won’t need in “input” frequency, and won’t need a duplexer.
David and Gary weave these topics into a conversation aimed at hams who don’t use DV now, but are curious about what it might bring in the future.
David’s Blog (details on FreeDV/CODEC2 development:
Interview with David on “Linux in the Ham Shack” (with 3% more badgers)
David’s 2011 talk on CODEC2 at the ARRL/TAPR DCC:
The 2011 DCC’s banquet talk – “The Village Telco” – David’s project to provide extremely low cost telephone service in East Timore, Africa.