Oh my God - ENOUGH !
> On Feb 22, 2020, at 12:43 PM, Neil Zampella <ne...@techie.com> wrote: > > > PLEASE do NOT continue this here .. its already causing issues on the WSJT > groups.io list, and has NOTHING to do with development of WSJT-X modes. > > Neil, KN3ILZ > > On 2/22/2020 12:45 PM, Rich Zwirko - K1HTV wrote: >> Seannon AG0NY , >> >> The FCC rules regarding 60 Meter channelized operation require that all of >> the components of upper sideband voice transmissions remain within the >> defined channel. >> >> 60 Meter Channel 3, (5357 KHz) is used for FT8 operation in the States and a >> number of other countries. The center frequency for that channel is 5358.5 >> KHz. A normal Upper Sideband , passing through a transmitter’s TX filter >> will pass audio signals between 200 and 2800 Hz. With a user’s VFO set to >> 5357 KHz, audio components of a USB signal will occupy between 5357.2 and >> 5360 KHz. >> >> A 50 Hz wide FT8 signal, using the same VFO setting and a tone between 200 >> Hz and 2750 Hz, will also remain within that channel. A Pactor signal will >> occupy between 5357 and 5359.4 KHz, a whole lot more than a 50 Hz FT8 >> signal. Expecting all FT8 signals to transmit exactly 1500 Hz, no more, no >> less, above the 5357 KHz is ridiculous. It simple won’t happen. >> >> I don’t know of any FCC actions on any complaints of FT8 interference to any >> other services occupying the 60 Meter FT8 frequency of 5357 KHz. >> >> 73, >> >> Rich – K1HTV >> >> >> AG0NY wrote: >> >> > >> >> > 9. Under the existing rules, only upper sideband voice transmissions >> >> are permitted in the 60 meter band. In the NPRM, the Commission proposed >> >> to >> >> authorize the use of three additional emission designators in the band: CW >> >> emission 150HA1A, which is Morse telegraphy by means of on-off keying, and >> >> data emissions 2K80J2D and 60H0J2B. In § 97.307(f)(14)(i) of the proposed >> >> rules, the Commission restricts emission designator 2K80J2D to data using >> >> PACTOR-III technique and emission designator 60H0J2B to data using PSK31 >> >> technique. The Commission also sought comment on whether amateur stations >> >> could be permitted to transmit emission types in addition to those >> >> requested by ARRL in the 60 meter band without increasing the likelihood >> >> of >> >> interference to primary users. > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel
_______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
