[digitalradio] Re: Another plug for JT65A ... the spectrum efficient mode

2010-03-26 Thread g4ilo
--- In digitalradio@yahoogroups.com, "John Becker, WØJAB" wrote: > > Just * how many * modes would like to put on one > frequency at a time? If the frequency is in use then > find another. > That's just the point. There isn't another. The space we have to use on HF is limited. All the frequenc

Re: [digitalradio] Re: Another plug for JT65A ... the spectrum efficient mode

2010-03-25 Thread John Becker, WØJAB
At 01:01 PM 3/25/2010, you wrote: >That seems a bit theoretical to me. If you have a mode that is very wide but >gets its information across in short bursts, it could be said to be very >efficient, but in practise it is efficient only if others are able to make use >of the gaps between transmiss

[digitalradio] Re: Another plug for JT65A ... the spectrum efficient mode

2010-03-25 Thread g4ilo
That seems a bit theoretical to me. If you have a mode that is very wide but gets its information across in short bursts, it could be said to be very efficient, but in practise it is efficient only if others are able to make use of the gaps between transmissions. If that mode needs that frequenc

[digitalradio] Re: Another plug for JT65A ... the spectrum efficient mode

2010-03-24 Thread n9dsj
Thanks Andy, And here I thought it was my superior receive capability :) Actually that was about the limit of resolution as I had the multi decoder spacing at 20 Hz. 73, Bill N9DSJ --- In digitalradio@yahoogroups.com, Andy obrien wrote: > > I know many are already aware of this, but take a