Or as an alternative it would be possible to run TDMA at say twice or four times the rate in a "standard" channel. Potentially this could mean full duplex speech or other interesting forms of communication. The codec would stay, but modulation change.. Place for serious experimentation....
SM6FBD On Wed, 2012-05-16 at 11:41 -0700, Bruce Perens wrote: > On 05/16/2012 11:22 AM, [email protected] wrote: > > For example if the rest of the HAM-iverse is using 10KHz channel > > spacing, why would we limit our codec/modem to a 2KHz channel. > If the local frequency coordinator allocated us a 10 KHz channel, and we > were capable of 2 KHz channels, we would have 5 channels. > > Here in Northern California, we have lost much of the repeater use of > the 440 MHz band due to PAVE PAWS. Frequency coordination hasn't been > easy here for decades. 2 KHz channels would be a desirable feature. > > The most recent Celluar Industry conference was a non-stop commercial > for FCC to allocate them more frequencies from start to finish of the > conference. People said it played like an infomercial. We potentially > have some problems coming up. > > Would 'purpose built' be from the ground up, or as a module > I think from the ground up. Newer ICOM radios have the codec on the > motherboard, we can't really count on current commercial radios as a > platform for codec experimentation. > > TAPR did a pretty good job at getting very many manufacturers to use > AX.25 on 1200 and 9600 modems interoperably. Bob Bruninga and TAPR did a > good job at getting many manufacturers to use APRS interoperably. We can > innovate here, and pave the way for adoption by mainstream manufacturers. > > Thanks > > Bruce > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
