At 06:06 PM 6/8/2010, you wrote: >I would also like to see a move away from 4800 Bd GMSK and maybe go >to 9600 Bd and using the G3RUH modem, most of our radios would be >able to handle it, it'd be easy to distinguish on air, and there'd >be extra bits available to add some FEC to the slow data.
Now, this might be a way to bring codec2 into the fold, by having a new voice/data system, with no RF level compatibility with D-STAR, and learning from D-STAR's shortcomings. Gateways could be built to translate between the two systems, so the D-STAR network is tied to the new network. I know my hotspot radio could handle 9600, it was originally built to handle the G3RUH modem. What would I like to see? Variable voice/slow data bandwidth - bandwidth can be allocated to voice, slow data or a mix (i.e. similar to D-STAR) of the two. Obviously, the protocol will need to be able to signal dynamically whether a frame contains voice or data. being able to smoothly shift between high quality 9600 bps voice to 9600 bps of just data would be handy. 9600 bps is a more useful bandwidth, but I'd also like to see a narrowband version (4800 bps or slower), which could be used where channel bandwidth is limited. 73 de VK3JED / VK3IRL http://vkradio.com
