I have an SCS PTC-IIe that can operate both Pactor-2 and Pactor-3. I can find no evidence of a busy frequency detector in its documentation or schematic.
For keyboard-to-keyboard Pactor operation, there is no need of busy frequency detection; the operators at each end can assure a clear frequency just as they would do with any other attended QSO. Neither Pactor nor SCS modems are the problem. Semi-automatic operation without busy frequency detection will be a source of QRM no matter what protocol is used. There is plenty of email traffic on the published WinLink PMBO frequencies; see http://users.iafrica.com/z/zs/zs5s/bulls/PMBO.TXT 73, Dave, AA6YQ --- In [email protected], John Becker <[EMAIL PROTECTED]> wrote: > > > >If QRM-Tor III modems did listen........ > > Since it cost over 900 bucks to get a SCS Pactor III controller I think it's > a pretty good guess that most have never copied any pactor III traffic. > That makes the above statement bold or just repeating what someone > else has said. > > I do have a pactor III controller and don't see that much email type traffic. > Most of that type of traffic is going over a TCP/IP network. Now it could be > that being in the mid-west I don't as much as the east or left coast. But still > I think one needs to see for himself before making bold statement like this. > ------------------------ Yahoo! Groups Sponsor --------------------~--> See what's inside the new Yahoo! Groups email. http://us.click.yahoo.com/2pRQfA/bOaOAA/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/
