--- In [email protected], Bill Turner <[EMAIL PROTECTED]> wrote: > > ORIGINAL MESSAGE: > > At 08:57 AM 6/22/2006, mulveyraa2 wrote: > > >The software would need to be able to determine whether any of > >*dozens* of possible signals are present in the passband. In the case > >of some of the more exotic ( and even less exotic modes ), it needs to > >try to decode multiple bandwidths and bitrates. This takes quite a > >bit of time. > > *********** REPLY SEPARATOR *********** > > The software doesn't need to "decode" anything. The presence of a > coherent signal means the frequency is busy. In this context, > "coherent" means any non-white noise, repeating signal, including > those that change frequencies within the channel. > > Coherent signal detected = no transmit. > > No jailhouse lawyers, please. We all know what the above means in the > real world. >
So your "busy detector" would not allow transmissions on the HF bands in the presence of static crashes, localized QRM from dimmers switches, motors, electric fence chargers, faulty power line insulators... does that seem like an effective solution to you? Becuase, in my real world, all of those things are present at one time or another. - Rich ------------------------ Yahoo! Groups Sponsor --------------------~--> Great things are happening at Yahoo! Groups. See the new email design. http://us.click.yahoo.com/TISQkA/hOaOAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> 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/ <*> 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/
