CIS 12-TONE MODEM
AT-3004D / AT-3104 Type Modem / 12x120Bd
AUDIO SAMPLES
CIS 12-tone modem in stby and idle condition (BPSK modulated)
CIS 12-tone modem in tfc.condition (BPSK modulated)
CIS 12-tone modem in tfc.condition (QPSK modulated)
Variants of this modem have been noted here in Europe
The following variant was monitored in early 1998:
narrow tone variant of the CIS 12 tone modem in idle and tfc condition
back to PSK-systems page
back to PSK-systems page
