OTHER FUNCTIONS
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Optional HM-75A functions
The optional HM-75A allows you to remotely select operating chan-
nels, open the squelch, etc. The switches on the HM-75A function
as follows.
CAUTION: When connecting the HM-75A to the transceiver,
make sure that power to the transceiver is turned OFF, other-
wise the transceiver may malfunction.
SWITCH
A
B
UP
DOWN
NORMAL
Smart-Ring
Open squelch
Change the oper-
ating channel
number up.
Change the oper-
ating channel
number down.
While holding [PTT]
No function
No function
Smart-Ring
Call-Ring
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