Stuart,
According to the response to the "digital users will have to listen", please
refer to the response filed by APRS. (see the ARRL FAQ)
In short "monitoring is impractical to listen for all other modes and due to
the 'short duration' of APRS digital transmissions, it is cost prohibitive
and not actually necessary."
73 de Phil - N8PS
Quoting Stuart Rohre <rohre@arlut.utexas.edu>:
Actually Broadband Ham Net has nothing to do with the symbol rate
change that is proposed by FCC and was backed by ARRL. ARRL was
trying to do away with artificial baud rate limits which make packet
less useful than more modern digital programs.
The League overlooked the potential problem of allowing SSB
bandwidth digital formats below the traditional digital band parts
at top end of CW low-in-the-band operations. Rather, they were not
seeking to assign a band plan; but RTTY and CW fans have quickly
rallied to protest any blanket approval of wider modes on top of CW.
Technically, you can operate CW anywhere in the band. In reality,
if digital modes come on and operate without listening to see if a
frequency is clear of ANY mode already in progress, CW operation or
RTTY, would be untenable.
The CW and RTTY low end of the bands crowd have the attention of the
ARRL Board now, and the Board hopefully will come up with a co-
existence plan
Such that CW / RTTY and other low power modes won't be displaced by
modes having a SSB bandwidth. And digital users will have to listen
for other modes before transmitting.
Stuart Rohre
K5KVH
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