[Icom] Amateur Radio, Audio, and RF levels - 14.178 - Revisited

[Chris BONDE]

 From test in following:
>Some amateurs have complained that
>enhanced SSB signals can take up 8 kHz or more of spectrum, cause splatter
>and unnecessarily interfere with other stations.

I have always been lead to believe that the Canadian max bandwidth is 6kHz 
from 160 to 12m, and, no splatter.  This, I believe is for everything AM, 
FM, SSB, ESB etc.

Chris opr VE7HCB



At 06:46 PM 2003-04-18 -0400, you wrote:

>Group,
>
>I have long been of the opinion that much too much time has been spent by
>some hams in a quest for hi-fi SSB transmitted audio. Seems there are others
>who share that opinion . . . For different reasons even.
>
>You can make up your own mind as to whether these folks are pioneers who are
>simply "pushing the envelope" or whether they are out of bounds just as those
>who exceed legal power levels are.
>
>Regards,
>
>Bill
>
>
> >From the April 18, 2003 ARRL Letter (The American Radio Relay League):
>
>==>"ENHANCED SSB" BANDWIDTHS "EXTREMELY INCONSIDERATE," FCC SAYS
>
>The FCC has sent advisory notices to four enthusiasts of what's become
>known as "enhanced SSB"--the practice of engineering transmitted
>single-sideband audio to approach broadcast quality. Letters went out
>earlier this month to amateurs in Illinois, Florida and New Jersey who are
>aficionados of enhanced SSB, also known as "upper wideband" and "lower
>wideband."
>
>"The Commission has received numerous complaints regarding the operation
>of your station," FCC Special Counsel Riley Hollingsworth wrote Paul
>Christensen, W9AC, John Anning, NU9N, Anthony Latin, W4NSG, and Sareno
>Salerno, W2ONV, on April 3. Hollingsworth said complaints to the FCC
>alleged that the bandwidths of the stations' enhanced SSB emissions were
>"wider than necessary and contrary to good engineering practice."
>
>"Wideband overly-processed audio, especially when coupled with the high
>intermodulation levels of certain amplifiers, results in the use of
>bandwidths extremely inconsiderate of other operators," Hollingsworth
>said. Such transmissions may violate FCC rules and may be at odds with
>what Hollingsworth described as "the expectation that the Amateur Service
>be largely self-regulated."
>
>Occupying more bandwidth than necessary in a heavily used amateur band,
>Hollingsworth wrote, not only could generate ill will among operators but
>lead to petitions asking the FCC to establish bandwidth limits for amateur
>emissions. At present, the FCC imposes no specific bandwidth limits on
>various amateur modes.
>
>Hollingsworth cited 307(a) of the Amateur Service rules that requires
>the signal of an amateur station not occupy "more bandwidth than necessary
>for the information rate and emission type being transmitted, in
>accordance with good amateur practice." Some amateurs have complained that
>enhanced SSB signals can take up 8 kHz or more of spectrum, cause splatter
>and unnecessarily interfere with other stations.
>
>"The Amateur Service is not a substitute for the Broadcast Service,"
>Hollingsworth said, "and the frequencies allocated to the Amateur Service
>were not allocated for a 'broadcast quality' audio emission or sound."
>Hollingsworth suggested the enhanced SSBers operate when the bands are
>less busy or on bands that are not heavily used.
>
>The many complaints the FCC has been getting--20 or so per week--leads to
>the conclusion that the stations' enhanced SSB operation is having "a
>negative impact" on the Amateur Service, Hollingsworth said. He requested
>that the four amateurs "fully review the rules" and make sure their
>stations conform to them.
>----
>Your Moderator: Dick Flanagan W6OLD, icom-owner@mailman.qth.net
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