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locked Re: frequencies for 160 - 6m?
K8BL BOB LIDDY <k8bl@...>
Bruce,toggle quoted messageShow quoted text
Well done! Your research and explanation makes perfect
sense when one understands exactly how FT8 works.
I'll plan to stay above 1500 Hz on FT8 with my VFO set
at 5.357 MHz in the future.
TNX/73, Bob K8BL/5
On Thursday, February 20, 2020, 12:13:08 AM CST, Bruce N7XGR <n7xgr1@...> wrote:
This is from, 47 CFR Part 97 - September 23 2014-2
(h) 60 m band: (1) In the 5330.5-5406.4 kHz band (60 m band), amateur stations may transmit only on the five center frequencies specified in the
table below. In order to meet this requirement, control operators of stations transmitting phone, data, and RTTY emissions (emission designators
2K80J3E, 2K80J2D, and 60H0J2B, respectively) may set the carrier frequency 1.5 kHz below the center frequency as specified in the table below. For
CW emissions (emission designator 150HA1A), the carrier frequency is set to the center frequency. Amateur operators shall ensure that their emissions
do not occupy more than 2.8 kHz centered on each of these center frequencies.
It only states that CW is to be set at the 1.5 KHz center frequency point.
The last sentence is the boundary limit for phone, data and RTTY emissions.
Notice what is missing in the sentence for CW emissions, it does not include
data and RTTY modes.
If the FCC wanted to specify that the transmission of CW, data and RTTY they would have
worded it that these will be on the channel center frequency like in this case 5358.5 KHz.
Take 2.8 KHz divide by 2 is 1.4 KHz. Center channel is 5358.5, subtract 1.4 KHz, is 5357.1,
add 1.4 gives you 5359.9. The limits are 5357.1 to 5359.9. Notice the 2.8 KHz centered,
that to me is the reference point for the limits. We are staying within these limits.
I do believe by now that the FCC would have sent notice and the ARRL will then issue
a bulletin informing all US Hams to cease FT8 activity in 60 meters especially on channel 3 (5357 KHz)
unless the transmission is on 5358.5 KHz or 1.5 KHz on the waterfall when the VFO is on 5357 KHz.
On Wed, Feb 19, 2020 at 10:14 PM Herb Blue <WB8ASI@...> wrote: