> Did you see this indicated anywhere in the information that was in > the Federal Register?
Among other places it is in the ARRL's report dated 21 November 2011: the requirement is to transmit “only on the five center frequencies specified”. In simple terms, that means the RF emission must be ON the center frequency or equally spaced on either side not just "somewhere in the channel". Further, in the FCC's Report and Order: http://transition.fcc.gov/Daily_Releases/Daily_Business/2011/db1118/FCC-11-171A1.pdf, paragraph 33 reads: "The NPRM proposed that, for amateur stations transmitting CW emissions and PKS31 data emissions, the carrier frequency [note: FCC refers to the RF frequency of a CW or PSK31 signal as the "carrier frequency" - they are not referring to the "dial" or center of channel] shall be set to the center frequency." In paragraph 36 (ibid), the Commission writes: "We ADOPT the center frequency requirement as proposed in the NPRM. Because the Amateur Service operates in the 60 meter band on a secondary basis, we pay particular attention to NTIA's position and the interests of Federal agencies that have primary status in the band. We conclude that continuing to restrict amateur stations to TRANSMITTING ON THE CENTER FREQUENCIES (emphasis added) will maintain the limited number of amateur operators using the five channels at any given time and provide certainty as to where such operators can be found." The Report and Order goes on to give the exact language that will be modified in Part 97 and I'm not going to duplicate all of it here. However, the Commission's own discussion of the matter is quite unambiguous - they want only one user at a time on each channel and they want all RF centered on the center of the channel - period. 73, ... Joe, W4TV On 2/4/2012 5:29 PM, Sandy wrote: > Joe, > > Did you see this indicated anywhere in the information that was in the > Federal Register? I saw no indication that the PSK signal "MUST" be on > some specific location within a channel. I do remember some random > discussion about there being one user per channel at the same time, but > this doesn't make sense for the efficient use of PSK-31. Being able to > multiplex several QSO's at one time is a great advantage in a spectrum > environment with little space per channel! If you see ANY reference to > this in the Federal Register posting, let me know if I have overlooked it! > > 73, > > Sandy W5TVW > > -----Original Message----- From: Joe Subich, W4TV > Sent: Saturday, February 04, 2012 2:45 PM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] FCC 60m Band Change Rules Published > > >> I guess the only thing not specified is where the PSK-31 signal shows >> up above the carrier frequency. Don't most PSK-31 transmissions use >> something around 1000 Hz? > > In the discussion part of the Report and Order, the Commission made it > clear that the PSK31 signal *must* be located on the channel center - > there were not to be multiple signals per channel creating a "mini > PSK31 band". To comply with the Commission's intent, PSK31 should > be operated with a 1500 Hz audio tone and the dial set 1.5 KHz below > the channel center. If, as in the case of the K3, the PSK generator > uses a subcarrier other than 1500 Hz, the dial frequency must be > offset as needed to place the resulting PSK31 signal in the center > of the assigned channel. > > 73, > > ... Joe, W4TV > > > ______________________________________________________________ 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
