> Read my message again. ESSB is a mode!
ESSB is NOT a mode ... it is a "wide" version of SSB analogous to the difference between 20.0A3 (Standard broadcast AM) and 6.0A3A (6 KHz wide "communications service" AM). When the FCC rules were written, the "minimum bandwidth" requirement meant exactly that amateurs were not to use 20.0A3 instead of 6.0A3 nor were Amateurs to use other similarly "wide" modes like 850 Hz shift RTTY instead of 170 Hz shift, etc. The minimum bandwidth requirements also prohibit other emission artifacts - like key clicks and excessively "sharp" keying waveforms on CW and incidental phase or frequency modulation on phone. 73, ... Joe, W4TV > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brett Howard > Sent: Monday, September 28, 2009 3:12 PM > To: 'David Gilbert'; 'elecraft' > Subject: Re: [Elecraft] ESSB and the rules > > > Read my message again. ESSB is a mode! I'm saying that > people who claim ESSB is wasteful then why can't CW ops say > that SSB is wasteful? > > ~BTH > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Gilbert > Sent: Monday, September 28, 2009 10:38 AM > To: elecraft > Subject: Re: [Elecraft] ESSB and the rules > > > Brett, reread part (a) of the FCC rules below. The maximum bandwidth > requirement is applied to each individual emission type > (mode). The FCC > acknowledges the right to use voice modes like SSB and even AM ... it > just says you shouldn't abuse the bandwidth when you do so. > > Dave AB7E > > > Brett Howard wrote: > > But using this set of rules to state that you shouldn't do > ESSB is the > same as > > saying that no one should use SSB because they could carry out the > > communications via CW in less bandwidth. > > > > ~BTH > > > > > > > > Excerpted from FCC rules Part 97: > > > > ยง97.307 Emission standards. > > > > (a) No amateur station transmission shall occupy more bandwidth than > > necessary for the information rate and emission type being > transmitted, > > in accordance with good amateur practice. > > > > (b) Emissions resulting from modulation must be confined to > the band > > or > > segment available to the control operator. Emissions outside the > > necessary bandwidth must not cause splatter or keyclick > interference to > > operations on adjacent frequencies. > > > > It's the law!! Minimum practical bandwidth, no splatter, > no spurs. > > FCC > > can and will cite stations for violations. > > > > 73 de W4CWZ > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
