Vertex Standard VXA-220, Operating Manual

Page: 23 / 56

VXA-220 P
RO
VI O
PERATING
M
ANUAL
21
Changing the Channel Steps
The VXA-220 ’s synthesizer provides the option of utiliz-
ing 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 VXA-220 to the operating band (NAV or
COM) on which you wish to change the channel steps.
Press the [ F
] key mo-
mentarily, then press the
[
(
SET
)] key to acti-
vate 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 chan-
nel 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.
A
DVANCED
O
PERATION
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.
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 de-
graded while receiving using 8.33 kHz channel steps.
F
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
8.33 kHz Step
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
25 kHz Step
1 xx .000 MHz
1 xx .025 MHz
1 xx .050 MHz
1 xx .075 MHz
Display