[Elecraft] OT- HF pactor

[Joe Subich, W4TV]

> Pactor is mostly run via SCS modems which are the only modems 
> to cater for the higher speed Pactor II and III modes. 

Pactor II and III are proprietary protocols available only with 
one product.  Their sole use appears to be for quasi-commercial 
operations designed to avoid the tariffs for satellite based 
data communications options.  

There is no benefit to Pactor II and III for normal AMATEUR 
operations and they are major QRM generators often destroying 
more than 3 KHz at a time.  I have often observed Pactor II 
and Pactor III wipe out the entire 14070-14072 "PSK band" or 
the entire "digital" area on 17 Meters due transmitting without 
regard for existing users.  

Pactor II and III and their operators are a scourge on amateur 
radio. 

73, 

   ... Joe, W4TV 
  


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Dave G4AON
> Sent: Wednesday, November 18, 2009 12:43 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] OT- HF pactor
> 
> 
> Hello Johnny, Pactor is mostly run via SCS modems which are 
> the only modems to cater for the higher speed Pactor II and 
> III modes. There are older modems using Pactor 1, but the 
> main advantage is Pactor only comes from using PII or PIII 
> modes which are highly resistant to QRM, even deliberate 
> attempts at jamming are often unsuccessful against it. I 
> often work a station in Hamburg (around 440 miles away) who 
> runs 5 Watts to a mobile whip antenna on 80m and we are able 
> to communicate fairly easily on any evening.
> 
> For more information on emergency comms via Pactor see: 
> http://www.winlink.org/ And for details of SCS modems see: 
> http://www.scs-ptc.com/
> 
> A K3 works quite well on Pactor, including PIII
> 
> 73 Dave, G4AON
> K3/100 #80
> =======================
> Hello Group,
> 
> I would like to learn more about HF digital mode 
> communication e.g. pactor.  and the application digital mode 
> in emergency communciation.
> 
> Could any of you direct me to the right website or information source?
> 
> 73
> 
> Johnny VR2XMC