On 10/03/2012 07:04 PM, Tom W8JI wrote:
- If my station is operating on USB, with a typical 3 dB transmit bandwidth of
2.7 kHz, then virtually all of the power of my fundamental emission is above my
suppressed carrier frequency, and extends from my suppressed carrier frequency
to at least 2.7 kHz above my suppressed carrier frequency.
No.
What do you mean, "No" ?
Go back and reread what I said. Especially the part "at least 2.7 kHz above my
suppressed carrier frequency". Your explanation completely validates what I
said. You also conveniently edited-out my later paragraph, so I'll repeat it again:
- When you consider the shape factor of typical transmit filtering, and the 3rd
order IMD characteristics of SSB transmitters, the situation is actually much
worse than I have stated.
I won't put words in your mouth, but your reply really should have been, "Yes,
but it's even worse than you stated".
73,
Steve, N2IC
The start frequency is the missing carrier + lowest audio tone passed.
The stop is highest passed audio freq + the missing carrier.
The FCC considers only the radiation, not the missing carrier, so with normal
audio of 300-3000 it would be F+.3 to F+3, or with the dial set at 14.300 it
would be 14.3003 to 14.303 plus any distortion or filter blow-through.The FCC
doesn't care where the missing carrier is, so if 14.300 was segment or band end,
it wiould be at least 3000 Hz out of band.
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