It seems apparent that the narrow-bandwidth modes that are very visible on the waterfall such as PSK31 and CW are the modes that people use - mainly because they are easy to find visually. Designers of new modes should keep this in mind. Also to be kept in mind is the approx 2.4 KHz SSB filter bandwidth which must be shared amongst those using the mode - so reducing bandwidth increases the number of ops who can simultaneously work within the same slice of bandwdth. I would like to see a very narrow FEC PSK mode which could be used when condx are very tough. Better to get something through slowly than not at all.
The only truly universal digi frequency that I have found so far is the 14070 USB PSK31 ops. I have been experimenting with CW reading programs - cwget mainly. At times it can get quite good copy, especially with good sending. It would be interesting to use CW as the underlying modulation scheme and then use a Digipan style multiple automatic decode function on receive and a point-and-send transmit interface where the computer creates the correct tones to place the CW signal in the correct place to match receive, as well as generating precisely timed cw. I actually did some research on this and found the scheme initally was called Coherent CW and eventaully led to the development of BPSK31. Then I could work digital and CW at the same time. This would allow backwards compatibilty where those without computers for receive could still participate. Is there such a program available? MixW apparently can decode six CW signals at a time, but it costs $$$ - and I don't know if it allows for generating CW via ssb tones. I have had only one Olivia contact - and that was arranged on PSK31. It did work well, but was slow. It sounds nice on the air. 73 de Brett -- =============== Brett Rees VK2TMG http://lisp.homeunix.net [Non-text portions of this message have been removed] 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/
