ARLA/CLUSTER: Recente desenvolvimento na tentativa de eliminar a arcaica restrição nos EUA da taxa de símbolos, que prejudica a experimentação com os modos digitais por quase 40 anos.

[João Costa > CT1FBF]

FCC agrees to 90-day pause in consideration of WT Docket 16-239

The ARRL reports on the latest development in the attempt to scrap the
archaic Part 97 symbol rate restriction that has crippled
experimentation with amateur radio digital modes for nearly 40 years

The ARRL report says:

It has been almost six years since the ARRL requested the FCC to
consider changes to the Amateur digital rules in 11-708 and almost
three years since the ARRL filed comments in the resultant proceeding,
identified by the FCC as 16-239.

The Commission's proposed changes differed from the ARRL's initial
filing and caused the ARRL to be concerned about possible interference
to current users resulting from the deletion of the ARRL's requested
2.8 kHz bandwidth limitation. Due to those concerns the League filed
comments with the FCC opposing the deletion of the requested
bandwidth.

Since the ARRL's initial filing many individuals and groups have
commented to the FCC and publicly regarding issues and potential
consequences they passionately believe are implicated by the FCC's
proposals embodied in 16-239/11-708.  Additionally, in the six years
since the initial filing of 11-708 new information has been presented
by individuals and groups who support and oppose the FCC's proposed
adoption of 16-239.

Due to the time that has elapsed since the ARRL's initial digital
rules change request,  the new information that has become available
and the extent of both support and opposition to the proposed rules
change,  the ARRL asked the FCC to grant a delay in its consideration
of the proposed rules change to provide the League the opportunity to
clarify the issues and determine whether a consensus can be reached on
some or all of the issues raised by the FCC's proceeding.

At the League's request, the FCC Staff has agreed to a 90-day  pause
in the consideration of WT Docket 16-239.

Source ARRL
http://www.arrl.org/news/fcc-agrees-to-90-day-pause-in-consideration-of-wt-docket-16-239

On March 17, 1980, the FCC introduced a 300 baud symbol rate
restriction on HF data which had ARRL support. Its intent was to
restrict the bandwidth of data transmissions without actually
specifying a bandwidth restriction.

In the September 2013 issue of QST the ARRL announced a new position
on symbol rates. They proposed that the FCC delete all references to
symbol rate from Section 97.307(f) of the amateur regulations and
adopt a bandwidth limit of 2.8 kHz for amateur data emissions below
29.7 MHz, see http://www.arrl.org/files/media/News/ItSeemsToUs.pdf

The ARRL Petition filed a Petition for Rule Making RM-11708 on
November 15, 2013 followed by an erratum filed November 26, 2013
https://ecfsapi.fcc.gov/file/7520958815.pdf
http://apps.fcc.gov/ecfs/document/view?id=7520959653

FCC 97.307
http://www.gpo.gov/fdsys/pkg/CFR-2011-title47-vol5/pdf/CFR-2011-title47-vol5-sec97-307.pdf