850 HZ position selects 850-Hz fsk operation.
position selects 85-Hz fsk operation,
VOICE position selects only voice operation.
85 HZ DIVERSITY position selects a dual 85-Hz operation with a
center frequency of 2805 or 425 Hz. Both
signals are transmitted at the same time, but
the receive section uses only the stronger
85 HZ+ VOICE
position selects operation of voice and
85-Hz nsk at the same time.