Am I missing something else? Before CODEC2 and FreeDV, I did ask several people that have played with DSTAR and have built products off of it what they were doing and in all cases I was told that the only cost-effective licensing mode for a small number of units (think in the thousands, not millions) was to buy the chip that does the mod/demod. Are you thinking about setting up a VHF/UHF/1.2 remote base accessible via an HF radio? I'm not sure this is even legal per part 97 (my recollection is that this must be done above 220MHz). it's not clear to me what you would do with this on HF. This is what resides in a repeater and allows the repeater to communicate with the Internet, link to other repeaters, etc. The other piece to DSTAR which was just mentioned by Kevin is the network interface piece. As for DSTAR, my assumption is that everyone has been thinking they want the AMBE codec over GMSK modulation along with the data/voice split. By putting the modes in the radio, you wouldn't need an external computer to run them, but we would have to handle the updating whenever Joe makes a changes, introduces a new mode, etc.
#DSTAR AMBE CODEC VERSION WINDOWS#
The former would make it easier for everyone to get updated as time moves forward - when Joe releases something new, it would immediately work in native mode with DAX (no windows sound would be the goal along with auto detection and connection to the radio).
#DSTAR AMBE CODEC VERSION CODE#
I haven't yet decided if it would be better to add a direct interface to our radios in his code or to add his code to our radios. I spoke with Joe 6-12 months ago and he said that the code is open source and we're welcome to use it within the guidelines in the source (paraphrasing here). I remember answering the question about JT modes, but I don't see the answer here. but is a detail that can get tackled down the road. That’s a matter of engineering, cost tradeoffs, etc. Of course, FLEX would have to weigh the pros and cons of implementing such digital voice modes via outboard hardware/software boxes and driving that in/out of the FLEX radio, versus directly incorporating such capabilities directly into their radio. This is where FLEX totally has the best platform for going forward in time. Something not even a possibility with the best iron boxes of the day. Once these hurdles are assessed, it is a matter of a business decision for FLEX, given market demand (or lack thereof). My point here is that while all of this stuff needs to be factored in, it is awesome that the FLEX platform makes almost anything in this regard technically doable. as various digital modes get into a variety of international standards bodies matters. Things like MELPe would have significant regulatory issues, such as occupied BW, FCC mask requirements, ITU matters, etc. BTW, don't take me overly literally here. could be added, again, with the cost of features being an optional choice for any given user. This could get pretty interesting, as other digital modes, like APCO P25, MELPe, etc.
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Hams who wish to have D-STAR on their FLEX-6000 radio could easily enough opt to pay FLEX for such an optional feature, covering the licensing fee for DVSI, FLEX’s R&D development, etc. Given that Icom incorporates the DVSI vocoder in their D-STAR radios (IC-7100, 5100, etc.), I assume the licensing fee is a hurdle that is not so big as to be economically prohibitive. would charge their fee for the licensing rights to their AMBE 2020 vocoder, whether it would be incorporated into a custom hardware chip, or integrated into on board DSP in the FLEX via coding. The D-STAR standard is an open source, and was jointly developed in Japan with JARL taking the lead in managing the standard, and its initial development.
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Dear FLEX: Any chance that D-STAR can eventually be incorporated into the FLEX-6000 series? I assume the AMBE vocoder and the D-STAR modulation type (GMSK) could all be coded into DSP within the FLEX.