1 of 12 Channel Select
This configuration is common to the clamshell
heads. Ground any line, F1 to F12 to select the
channel.
Binary
Channel Selection
(Syntor
only)
Apply ground to
F11 and F12, placing the radio in the binary
input mode. F1 to F5 now are used to select one
of 32 channels binary fashion with inverted
logic. Head which use this scheme are the 16
channel clamshell and the sys90 8, 16, 24 and 32
channel heads with 8 switches in the upper row
and ABCD possible in the bottom row.
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