The 50K is an arbitrary figure. The PMBO Operator may set a file size limit for file/attachment total size. Pactor 2 is expected to be utilized by a controller that has memory capable of providing buffering and handling compression The point here is that without memory buffering and/or the ability to handle compressed files, once the message length exceeds the ability of the TNC/DSP Controller's ability to "Spool" or buffer data, the station running unbufferred will crash and the message will terminate. Depending on the setup, it could be retransmitted over and over, but the situation where a message was transmitted in the clear (non B2f Compressed) for long periods of time is rarely expected to be seen. If this was actually the case, it would be the exception, and not the rule. Anything could happen, but the reporting of the message being sent for a long period of time, monitored for content buy another station, indicates it was not being sent compressed. The odds are against this situation actually occurring. Again, there are exceptions. David KD4NUE
-----Original Message----- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Sholto Fisher Sent: Friday, December 14, 2007 10:40 PM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] Re: Winlink Can Be Reliable in Emergencies David, If it was using Pactor 2 would Winlink accept the message/attachments? or is the 50K limit applicable here also? 73 Sholto KE7HVP ----- Original Message ----- From: <[EMAIL PROTECTED] <mailto:dalite01%40bellsouth.net> net> To: <digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com> Sent: Friday, December 14, 2007 5:47 PM Subject: RE: [digitalradio] Re: Winlink Can Be Reliable in Emergencies Then it was non B2F, and that makes it possible the message was attempted, however, buffer overrun would have stopped it's transmission long before it got to 50K mark. Pactor I cannot handle the B2F Compression used within the WinLink 2000 system with Airmail as the host, except for small text-only messaging. Pactor III and ARQ would take a large capability for processing and a CPU that was capable of true multiprocessing using a compliant operating system to decode, as proven back in 2005 when this argument originally surfaced. It should be in Snopes by now. David KD4NUE -----Original Message----- From: digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com [mailto:digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com] On Behalf Of Sholto Fisher Sent: Friday, December 14, 2007 8:05 PM To: digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com Subject: Re: [digitalradio] Re: Winlink Can Be Reliable in Emergencies Correction: it was Pactor 1 ARQ I was monitoring and yes, it was Winlink. 73 Sholto KE7HPV ----- Original Message ----- From: "Leigh L Klotz, Jr." <[EMAIL PROTECTED] <mailto:leigh%40wa5znu.org> org> To: <digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com> Sent: Friday, December 14, 2007 4:41 PM Subject: Re: [digitalradio] Re: Winlink Can Be Reliable in Emergencies >I am confused. Sholto said it was Pactor 2, not Pactor 3. I don't know > that Winlink is involved at all. But there is so much mystery about > these modes, and it seems like an archive would be a good idea. > > I set up one for SSTV but got tired of deleting the unseemly images, but > others have set up really nice ones. > > 73, > Leigh/WA5ZNU > On Fri, 14 Dec 2007 3:16 pm, [EMAIL PROTECTED] <mailto:dalite01%40bellsouth.net> net wrote: >> If you are monitoring a Pactor transmission, or preserving same for >> archival >> purposes, it must be FEC. >> >> My understanding is that all Winlink 2000 transmissions are Pactor ARQ. >> >> Methinks something stinks here:) >> >> David >> KD4NUE >> >> -----Original Message----- >> From: digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com >> [mailto:digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com] On >> Behalf Of Leigh L Klotz, Jr. >> Sent: Friday, December 14, 2007 5:42 PM >> To: digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com >> Subject: Re: [digitalradio] Re: Winlink Can Be Reliable in Emergencies >> >> >> Could you set up an automatic archive of these PACTOR transmissions, >> like the various ones that exist for SSTV? >> Leigh/WA5ZNU >>> --- In digitalradio@ <mailto:digitalradio%40yahoogroups.com> yahoogroups.com, "Sholto Fisher" <[EMAIL PROTECTED]> >>> wrote: >>>> For instance I am monitoring a Pactor 2 transmission on 30m that has >>> been on >>>> going for around 25 minutes so far and the latest email to go >>> through is >>>> titled: >>>> >>>> <FW: Please read til the end-Why boys need parents...269250 >> >> >> >> >> Announce your digital presence via our Interactive Sked Page at >> http://www.obriensw <http://www.obriensw <http://www.obriensweb.com/drsked/drsked.php> eb.com/drsked/drsked.php> eb.com/drsked/drsked.php >> >> >> View the DRCC numbers database at >> http://groups. <http://groups. <http://groups.yahoo.com/group/digitalradio/database> yahoo.com/group/digitalradio/database> yahoo.com/group/digitalradio/database >> >> Yahoo! Groups Links >> >> >> >
