Bill
The FCC/NTIA want you to:
(1) monitor the channel for possible upper SSB transmissions if you are to be
told to stop.
(2) The RTTY tones must be 1500 Hz +/- 85 Hz above the SSB rig dial frequency.
That implies you should operate RTTY in AFSK mode with the rif set to upper SSB
and
with tones set to 1415 and 1585 Hz.
Do you need specific details for using MMTTY that way? I had it was in QST Sept
2013,
technical correspondence.
73
Kai, KE4PT
On 11/24/2013 10:54 PM, Bill Turner 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.
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