•tuner type
this item selects optional antenna tuner type.three selections
are available.
•no : no optional tuner connected.
•4 : the optional ah-4 antenna tuner is connected.
•18 : the optional at-180 antenna tuner is connected
the default is no.
•auto tune
the optional at-180 antenna tuner has an automatic start
capability which starts tuning if the swr is higher than
1.5—3.
when “off” is selected, the tuner remains off even when
the swr is poor (1.5—3). when “on” is selected, automatic
tune starts even when the tuner is turned off.
the default is of (off).
•ptt tune
when an optional ah-4 or at-180 automatic antenna
tuner is connected, tuning can be started automatically at
the moment the ptt is pushed.
the default is of (off)