109
Auto Active-Tuning Antenna System (ATAS-120A) Operation
FT-891 Advance Manual
Setup the FT-891
Before operation can begin, the FT-891 microprocessor must be setup to accommodate
the ATAS-120A Auto Active-Tuning Antenna. This is done using the Menu Mode:
1. Press and hold in the [
F
] key for one second
to activate the Menu mode.
2. Rotate the
MULTI
function knob to select
Menu Mode “
16-15
[
TUNER SELECT
]”.
3. Press the
MULTI
function knob, and then ro-
tate it to set this Menu item to “ATAS”.
4. Press the
MULTI
function knob to save the
new setting.
5. Press the [
F
] key to exit the Menu mode and
resume normal operation.
The “ATS” icon will appear in the display.
Tuning Operation
1. Press the [
F
] key repeatedly to find the
“FUNCTION-1” list screen.
2. Rotate the
MULTI
function knob to select
“TNR”.
3. Press the
MULTI
function knob to begin au-
tomatic tuning. The transmitter will be en-
gaged, and the “ATS” icon will blink while
tuning is in progress.
4. Tuning will stop automatically when a low SWR is achieved. You may Press the
MULTI
function knob while tuning is in progress, to cancel the automatic tuning.
r
Antenna Tuner function may be assigned to the [A], [B] or [C] key. Refer to “Changing
the function assigned to the [A]/[B]/[C] keys” in the FT-891 Operating Manual.
r
Check the grounding and installation conditions if “Hi-SWR” icon appear (tuning
cannot be carried out).
r
As transmit signals are emitted during tuning, take note not to interfere with any
communication that is already in progress on the frequency.
