Advanced Operation; Tuning Methods - Vertex Standard VXA-220 Operating Manual

Tuning Methods

Throughout this manual, you will see references to sev-
eral different frequency setting methods. Each will be par-
ticularly useful in a particular operating situation, and they
are described below:
VFO (Variable Frequency Oscillator)
The VFO is a "tuning dial"
system which allows you
to tune through the NAV or
COM bands using the
DIAL selector knob, the Keypad, or the scanner. The
VXA-220 has two VFOs which are called VFO-A
and VFO-B. Press the [
to switch between VFO-A and VFO-B. You may set
VFO-A to the NAV band, and VFO-B to the COM
band, if you like.
VFO
F
WX
VXA-220 P VI O
RO
A
DVANCED
( SET )] key momentarily
MR
BOOK
M
PERATING ANUAL
O
PERATION
MR (Memory Recall)
The MR (Memory Recall)
mode of the VXA-220 pro-
vides the user with the abil-
ity to store and recall as
many as 150 channels in the radio's main memory bank.
These memory channels may also be labeled by you
with an alpha/numeric name of up to 8 characters in
length, to aid in quick identification of the channel. See
page 26 for details on creating alpha/numeric labels.
BOOK (Pre-Programmed) Memories
The Book memories are pre-programmed, either at
the factory or by your
Dealer (depending on your
country's requirements),
typically including the ma-
jor COM and NAV band station frequencies used in
your area (See page 48 for channel list). The Book
memories can be changed by the user. See page 36
for details.
WX (Weather Channel) Memories
Ten Weather Channels are
pre-programmed at the
factory. The VXA-220
will automatically scan this
special bank when it is selected by the user.
15