Specifications

VX-1400 OPERATING MANUAL26
Antenna Tuning Procedures
When the optional FC-30 or FC-40 External Antenna Tuner is installed, it is activated on
each channel automatically.
 Be certain that all connections to the FC-30/-40 have been properly made.
 Select the appropriate channel with the
[

]
/
[

]
button.
 Press the
[
TUNER
]
button (the
[
PROGRAMMABLE
]
button which assigned “TUNER”
function: the factory default is the
[
P1
]
button). The two arrows of “ ” icon on the
LCD display will blink, and the VX-1400 will transmit for a short time. Thereafter,
the transceiver will return to the receive mode, and the “ ” icon will now be illumi-
nated constantly.
 The FC-30/-40’s microprocessor-based circuitry includes memory sufficient to re-
tain 100 (for FC-30, 200 for FC-40) antenna tuning settings in memory. This will
greatly reduce frequency change time. If you utilize more than 100 or 200 operating
channels that are widely removed in frequency, the new tuning settings will be over-
written on a first-in, first-out basis.
IMPORTANT NOTE
If the impedance encountered by the FC-30/-40 exceeds 2:1, the “ ” icon will
blink, and the microprocessor will not retain the tuning data for that frequency, as
the FC-30/-40 presumes that you will want to adjust or repair your antenna sys-
tem so as to correct the high SWR condition. Similarly, when the temperature of
the inside of the transceiver’s case becomes higher, the “ ” icon will also blink.
Stop the transmission and cool down the transceiver for few minutes.
TRANSMISSION
STATUS
Normal Condition
Hi SWR or Hi Temperature
Antenna Tuner is activated
Antenna Tuner is progressing
ICON
(w/Blink)
(w/ Blink)
OPERATION