John D. Hays wrote: > > > The protocol differentiates the DV datastream (AMBE encoded voice, including > 1200 bps messaging) from the DD datastream (Ethernet packets encapsulated in > D-STAR headers) by flipping a single flag bit. No DV radios allow this > "flip" at the current time, though I think it would have been a great > extension to the protocol (unfortunately to be fully compliant with the > written spec you must send DD at 128Kbps, kind of silly, it should allow it > at any clock rate the two endpoints agree upon). Also, it is unfortunate > that the Icom RP2C controller believes that DV is 4800 bps and DD is 128 > Kbps. Maybe in a future version this can be changed?
Yeah, I figured that it was a bit-flip to get to DD, but knew the spec also called for it to be high-speed. Yes, "low-speed DD" as an add-on spec would be useful, *if* Icom knows their current rigs won't completely freak out when receiving such a transmission. If it couldn't be made backward compatible with the current rigs, it would be a mess. If it could, it would be a neat "future feature". Nate WY0X
