John, Are you saying that this is something for HF? I can see it working if you have a wide BW area, but on HF we need to conserve spectrum to a much greater degree than on VHF and up. I don't see any possibility of anything much greater than 3 or 3.5 KHz below 28 MHz in the foreseeable future. Nor would I want anything wider and to be fair I would include DSB AM phone as inappropriate so that we don't have special exemptions.
Fast scan TV (actually slower and with lower resolution than regular fast scan) and voice/data running at a good speed seems doable on 2.4 GHz and up. Our local club has done some experiments this autumn at the fairgrounds (demonstration site) and tried a high gain 2.4 Gig antenna and laptops with built in antennas and video camera running on its own IP being repeated by a Wireless Access Point. Not the best, but may have some limited uses. 73, Rick, KV9U John Champa wrote: >Using HSMM networked radio techniques many operators can have separate, >individual, IM exchanges keyboard-to-keyboard on the same frequency, at the >same time. > >This is similar to trunked digital repeaters in which many individuals can >have separate DV QSOs on the same frequency pair at the same time. > >So when you transmit on this 10kHz wide HF channel, from your perspective >you are in a clear one-to-one QSO with another Ham, sort of like using PSK >without the QRM, except that your message is buffered and then transmitted >all at once in very short and fast burst. Thus my anology to IM. > >However, you are actully transmitting to a HSMM radio access point (AP) >along with hundreds of other Hams at the same time and on the same 10 kHz >channel. So, for example, if you have a beam, all stations would point to >the HF AP instead of at each other. If you are using a non-directional >antenna, then you would simply look for an AP in the area of the world you >wish to work. >Simple. > > > Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
