By "carrier frequency", they mean the suppressed carrier when
operating AFSK in an SSB mode.
73,
~iain / N6ML
On Sun, Nov 24, 2013 at 7:54 PM, Bill Turner <dezrat1242@yahoo.com> wrote:
> For some reason that defies explanation, I want to try RTTY on 60 meters. I
> am trying to figure out what frequency to set my TX to, based on FCC part
> 97.303(h), quoted below. Here's the problem:
>
> 1. If I set my MARK carrier frequency at 1.5 kHz below the channel center
> frequency as stated below, the SPACE frequency will be out of the band, I.e.
> 170 Hz low.
>
> 2. If I set my MARK frequency to center frequency + 1/2 of 170 Hz, that
> would center my transmission around the channel center. For example, with
> channel 1 which has a center f of 5332.000 I should set MARK to 5332.085and
> thus SPACE would be 170 Hz lower, thereby centering me in the channel.
>
> So what do I do? I'm thinking #2 is within the spirit of the rules, but
> without a specific mention, I'm not sure. Or is it something else entirely?
>
> Any suggestions?
>
> 73, Bill W6WRT
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
> FCC part 97.303(h):
>
> (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.
> _______________________________________________
> RTTY mailing list
> RTTY@contesting.com
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