Hi Kurt, For HF... AOR had (and still has...) a DV "fast modem" using AMBE codec (it also has slick digital image transfer but rarely ever used). AOR's modem(s) have no connection/compatibility with later digital voice derived from hacked Digital Radio Mondiale (DRM) using hacked MELP/LPC codecs followed with others including FDMDV.
Later, FreeDV was developed by hams/for hams from scratch using open source CODEC2 which brings us up to what is being used now. FreeDV also has a "hardware" version (SM1000) also plus a new one (ezDV) available soon. There is more to DV's ~25 years history but that’s for another time. Yes, Mooneer K6AQ was demonstrating FreeDV at Pacifcon with his ezDV hardware wirelessly connected to an iCOM IC705. Look for "free" PC software FreeDV on the web site freedv.org and you'll have the latest in narrow BW/low bit rate codec HF DV. Technology marches on... you'll have to check in more often. 😊 Mel, K0PFX -----Original Message----- From: Facility 406 <facility_...@bruteforcedevelopment.com> Sent: Wednesday, November 22, 2023 8:42 PM To: freetel-codec2@lists.sourceforge.net Subject: [Freetel-codec2] Trying to straighten something out... Around 2000, or 2001, some time after AOR came out with their voice modems for $$$$, I was looking up digital voice, vocoders, et cetera. I came across, I think, this forum, but it's called Freetel, and I recall FreeDV, and a company, in Australia, I think, that had hardware digital voice modems for about $200 (I didn't have the money for two at the time), then there's some new PC based digital voice, and a fellow this afternoon was talking about, either FreeDV, DV3, DVFree, DV, he wasn't too sure, actually... It's all very confusing, and I haven't been able to keep track over the years. He also mentioned some sort of presentation at Pacificon, with a couple of low power HF rigs connected to each other to demonstrate the digital voice system. Are these the same, just evolution of the same system, all different, or what? Kurt _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2 _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
