Rev. 1.0 Page 24
3. The supplied transmitter does not have a DTMF keypad so the COM-
120B’s internal DTMF generator will be used to simulate pressing
keys on a radio’s DTMF keypad. The COM-120B’s DTMF generator
will externally modulate the transmitter and the COM-120B’s receiver
and DTMF decoder will decode the transmitted DTMF tone codes.
4. Set the radio channel to 2 and Key the radio.
DTMF codes are decoded
and displayed here.
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