24
advanced operatIon
Changing the Channel Steps
The
FTA-230
’s synthesizer provides the option of uti-
lizing channel steps of 8.33/25 kHz per step (default: 25
kHz). If you need to change the channel step size, the
procedure to do so is very easy.
First set the
FTA-230
to the operating band (NAV
or COM) on which you wish to change the channel
steps.
Press the
[
F
]
key mo-
mentarily, then press
t he
[
(
S E T
) ]
k e y
to activate the Menu
(“SET”) mode.
Rotate the
DIAL
selec-
tor knob to select Menu
Item “
STEP
.”
Press the
[
ENT
(
)]
key to
enable adjustment of this Menu
item.
Rotate the
DIAL
selector knob to select the new
channel step size.
When you have made your selection, press the
[
ENT
( )]
key to save the new setting, and then
press the
PTT
key to exit to normal operation.
Important Note
1) When you select the channel step to 8.33 kHz, the
channel display differs from actual operating fre-
quency; see the chart below. However, the operator
(pilot, tower, control, etc) will call out the frequency
according to what the display indicates.
Operating
Frequency
1
xx
.0000 MHz
1
xx
.0083 MHz
1
xx
.0166 MHz
1
xx
.0250 MHz
1
xx
.0333 MHz
1
xx
.0416 MHz
1
xx
.0500 MHz
1
xx
.0583 MHz
1
xx
.0666 MHz
1
xx
.0750 MHz
1
xx
.0833 MHz
1
xx
.0916 MHz
8.33kHzStep
1
xx
.005 MHz
1
xx
.010 MHz
1
xx
.015 MHz
1
xx
.030 MHz
1
xx
.035 MHz
1
xx
.040 MHz
1
xx
.055 MHz
1
xx
.060 MHz
1
xx
.065 MHz
1
xx
.080 MHz
1
xx
.085 MHz
1
xx
.090 MHz
25kHzStep
1
xx
.000 MHz
1
xx
.025 MHz
1
xx
.050 MHz
1
xx
.075 MHz
Display
2) The 8.33 kHz step allows the radio to receive only,
and the transmit function is disabled.
3) The adjacent channel selectivity will be slightly
degraded while receiving using 8.33 kHz channel
steps.
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