[RTTY] ARRL's WinLink initiative and Pactor III

[Phil Duff NA4M <na4m@arrl.net>]

The ARRL's recent endorsement of WinLink 2000 for EMCOMM ARES use raises 
some interesting questions for RTTY and other HF digital modes.

WinLink 2000 can use Pactor for HF links and supports Pactor III which is 
touted as being high speed etc.

Information I've seen seems to indicate that Pactor III can do 4800 baud on 
HF with a bandwidth of 2.8 khz.

Are there currently Pactor III stations running on HF and has anyone 
noticed their on-air apparent bandwidth's?

What frequencies do the Pactor III stations operate?

If substantial numbers of 2.8 khz bandwidth Pactor III stations start to 
appear on the HF bands in support of EMCOMM/ARES how will this impact RTTY 
operations and maybe other digital modes (PSK, MFSK, etc.) that 
traditionally have had some sharing/overlap of frequencies in the HF 
digital sub bands??

73 Phil NA4M



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