In the US, we can send images in 500Hz bandwidth in the cw/data segments of the band, but if the bandwidth is higher than 500Hz, we must move to the phone bands. Andy is trying to foster a set of image operations down in what works out to be in the US data segment, so if we want to play, we have to do it in 500Hz. There was a discusion of OFDM recently here and I thought the upshot was that the throughput for 500Hz coding using multiple QAM carriers in 500 Hz would result in transfer times too long, so I suggested maybe we try making the MFSK analog mode more readily available. The DRM stuff is quite exciting and I hope to try it out sometime, but for now at least, it will have to be in the image/phone band, where we then can't do kbd-to-kbd data.
Leigh/WA5ZNU And no, I don't want to start another debate on the FCC regulations. On Wed, 23 Jan 2008 1:59 pm, Simon Brown wrote: > It could be done in 500 Hz - why are you looking for the 500Hz > bandwidth? > > Simon Brown, HB9DRV > > ----- Original Message ----- > From: "Leigh L Klotz, Jr." <[EMAIL PROTECTED]> > > >> I didn't know it fit iin 500Hz. I will go look again. This is >> JPEG2000 >> coding? If it fits, it is more interesting than MFSK's analog mode, >> but >> MFSK's analog has the deployment advantage. > > > > Announce your digital presence via our Interactive Sked Page at > http://www.obriensweb.com/sked > > > DRCC contest info : http://www.obriensweb.com/drcc.htm > > Yahoo! Groups Links > > >
