CIS 12-TONE PSK MODEM
AT-3004D / AT-3104
Type Modem / 12x120Bd BPSK or QPSK
(also incorrectly labeled
as "MS5" or "FIRE")
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FFT-Spectrum vs. time, frequency and signal
intensity (stby. and idle condition)
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FFT-Spectrum vs. frequency and signal intensity
in stby. condition
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FFT-Spectrum vs. frequency and signal intensity
in idle condition
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FFT-Spectrum vs. time, frequency and signal
intensity in tfc. condition
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FFT-Spectrum vs. frequency and signal intensity
in tfc. condition
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Phase Plane Spectrum of a BPSK signal
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Phase Plane Spectrum of a QPSK signal
Variants of this waveform have been noted
here in Europe. The following variant
was monitored in early 1998:
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FFT-Spectrum vs. time, frequency and signal
intensity
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FFT-Spectrum vs. frequency & signal
intensity
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