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
( )
USA version only
VXA-220 P VI O
RO PERATING
A
DVANCED
( SET )] key momentarily
MR
BOOK
M
ANUAL
O
PERATION
MR (Memory Recall)
The MR (Memory Recall)
mode of the VXA-220
provides the user with the
ability 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 char-
acters 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. The Book memories can be changed by
the user. See page 36 for details.
WX (Weather Channel) Memories (USA version only)
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