Note that your dealer may have made provision for “Talk Around”
channels by programming “repeater” and “Talk Around” frequencies
on two adjacent channels. If so, the key may be used for one of the
other Pre-Programmed Functions.
Scan A/D
The Add/Del feature allows the user to arrange a custom Scan.
Press (or Press and hold) the assigned
Programmable
key to delete/
restore the current channel to/from your scanning list.
When you delete a stored channel, the “
” icon will, in turn disap-
pear. When you restore a channel, the “
” icon will now appear.
Phone
Your Dealer may have pre-programmed Auto-Dial telephone number
memories into your radio.
To dial a number, just press (or Press and hold) the Dealer-assigned
Programmable
key for Speed Dialing. The DTMF tones sent dur-
ing the dialing sequence will be heard in the speaker.
Call/Reset
Press (or Press and hold) the assigned
Programmable
key to silence
the receiver and reset for another call (when your communication is
finished).
Call 1/Call 2
Press (or Press and hold) the assigned
Programmable
key to send a
5-tone sequential tone group which is pre-defined.
Call Up/Call Down
Press (or Press and hold) the assigned
Programmable
key to select a
5-tone encode code from the pre-defined encode list.
Code Set
Press (or Press and hold) the assigned
Programmable
key to change
the encode digits for 5-tone operation. To change a specific digit, se-
lect the desired digit using the [
A
] key, then change thenumber using
the [
B
]/[
C
] keys, and store the number using the [
D
] key.
Emergency
The
VX-420A Series
(
LTR
)
includes an “Emergency” feature, which
may be useful, if you have someone monitoring on the same frequency
as your transceiver’s channel. For further details contact your
VER-
TEX STANDARD
dealer.
Home
Press (or Press and hold) the assigned
Programmable
key to recall
the pre-programmed Home system/group. When you recall the Home
system/group, the “
H
” icon will appear on the display.
Press (or Press and hold) the assigned
Programmable
key again to
return to previous system/group; the “
H
” icon will disappear on the
display.
Home Set
Press (or Press and hold) the assigned
Programmable
key to store
the current system/group to the Home register.
Short-cut GP-1, GP-2, GP-3, GP-4
Press (or Press and hold) the assigned
Programmable
key to recall
the Dealer pre-programmed System/Group directly.
Continuous System Up, Down
Press and hold the assigned
Programmable
key causes the radio to
begin stepping (repeatedly) upward or downward through the Sys-
tems.
Continuous Group Up, Down
Press and hold the assigned
Programmable
key causes the radio to
begin stepping (repeatedly) upward or downward through the Groups.
System Up, Down
Press (or Press and hold) the assigned
Programmable
key to switch
to a higher (or lower) System.
Once the desired System is reached, rotate the
System/Group
knob
to select the desired System/Group within the selected System.
Group Up, Down
Press (or Press and hold) the assigned
Programmable
key to switch
to a higher (or lower) operating Group number.
Monitor
Press (or Press and hold) the assigned
Programmable
key to disable
the Signaling Squelch (CTCSS, DCS, 5-Tone Signaling, or DTMF
Pager). Again press (or Press and hold) the assigned
Programmable
key to resume normal (quiet) the Signaling Squelch action.
When the Signaling Squelch is disabled, the “
” icon will be indi-
cated on the display.
NSQ
Press and hold the assigned
Programmable
key to disable both the
Noise and Signaling Squelch (CTCSS, DCS, 5-Tone Signaling, or DTMF
Pager) systems. Again press and hold the assigned
Programmable
key to resume normal (quiet) operation of the Noise and Signaling
Squelch system.
When the Signaling Squelch is disabled, the “
” icon will be indi-
cated on the display.
TX Low Power
Press (or Press and hold) the assigned
Programmable
key to set the
radio’s transmitter to the “Low Power” mode, thus extending battery
life. Press (or Press and hold) the assigned
Programmable
key again
to return to “High Power” operation when in difficult terrain.
When the radio’s transmitter is set to “Low Power” mode, the “
L
”
icon will be indicated on the display.
Key Lock
Press (or Press and hold) the assigned
Programmable
key to lock
the
Programmable
keys (except
Lock
,
Emergency
,
Monitor
,
Light-
ing
, and
NSQ
keys); thus, the [
A
], [
B
], [
C
], and [
D
] keys can be dis-
abled to prevent radio settings from being disturbed. In the Lock mode,
the display will show “
LOCK
” when you rotate the
System/Group
selector knob or touch a
Programmable
key.
Lighting
Press (or Press and hold) the assigned
Programmable
key to illumi-
nate the LCD for five seconds.
Scan
The Scanning feature is used to monitor multiple channels programmed
into the transceiver. While scanning, the radio will check each channel
for the presence of a signal, and will stop on a channel if a signal is
present.
Ì
To activate scanning:
Press (or Press and hold) the assigned
Programmable
key.
The scanner will search the channels, looking for active ones; it
will pause each time it finds a channel on which someone is speak-
ing.
Ì
To stop scanning:
Press (or Press and hold) the assigned
Programmable
key.
Operation will revert to the channel to which the
System/Group
knob is set.
Talk Around
Press (or Press and hold) the assigned
Programmable
key to acti-
vate the Talk Around feature when you are operating on duplex chan-
nel systems (separate receive and transmit frequencies, utilizing a “re-
peater” station). The Talk Around feature allows you to bypass the
repeater station and talk directly to a station that is nearby. This fea-
ture has no effect when you are operating on “Simplex” channels, where
the receive and transmit frequencies are already the same.
When the “TA” function is activated, the “
TA ON
” notation will be
appeared on the display.
D
ESCRIPTION
OF
O
PERATING
F
UNCTIONS
K
EY
F
UNCTIONS
The
VX-420A Series
(
LTR
)
provides programmable [
A
], [
B
], [
C
],
[
D
] function keys and programmable [
] and [
] switches.
These
Programmable
keys functions can be customized (set to
other functions), via programming by your
VERTEX STANDARD
dealer, to meet your communications/network requirements. Some fea-
tures may require the purchase and installation of optional internal
accessories. The possible
Programmable
key programming features
are illustrated below, and their functions are explained in the next chap-
ter. For further details, contact your
VERTEX STANDARD
dealer.
For future reference, check the box next to each function that has been
assigned to the
Programmable
key on your particular radio, and
keep it handy.
[
A
]
/
/
/
/
/
--/
--
/
/
/
/
/
/
/
/
/
/
/
/
/
--/
--
/
/
/
/
/
/
--/
--
--/
--
--/
--
--/
--
Function
System Up
System Down
Group Up
Group Down
Monitor
NSQ
TX Low Power
Key Lock
Lighting
Scan
Talkaround
Scan A/D
Phone
Call/Reset
Call 1
Call 2
Code Up
Code Down
Code Set
Emergency
Home
Home Set
Short-cut to GP 1
Short-cut to GP 2
Short-cut to GP 3
Short-cut to GP 4
Continuous System Up
Continuous System Down
Continuous Group Up
Continuous Group Down
[
B
]
/
/
/
/
/
--/
--
/
/
/
/
/
/
/
/
/
/
/
/
/
--/
--
/
/
/
/
/
/
--/
--
--/
--
--/
--
--/
--
[
C
]
/
/
/
/
/
--/
--
/
/
/
/
/
/
/
/
/
/
/
/
/
--/
--
/
/
/
/
/
/
--/
--
--/
--
--/
--
--/
--
[
D
]
/
/
/
/
/
--/
--
/
/
/
/
/
/
/
/
/
/
/
/
/
--/
--
/
/
/
/
/
/
--/
--
--/
--
--/
--
--/
--
[
Side 1
]
/
/
/
/
/
--/
--
/
/
/
/
/
/
/
/
/
/
/
/
/
--/
--
/
/
/
/
/
/
--/
--
--/
--
--/
--
--/
--
[
Side 2
]
/
/
/
/
/
--/
--
/
/
/
/
/
/
/
/
/
/
/
/
/
--/
--
/
/
/
/
/
/
--/
--
--/
--
--/
--
--/
--
Programmable
key (Press/Press and Hold)
ARTS
(
A
UTO
R
ANGE
T
RANSPOND
S
YSTEM
)
This system is designed to inform you when you and another
ARTS
-
equipped station are within communication range.
During
ARTS
operation, your radio automatically transmits for about
1 second every 25 or 55 seconds in an attempt to shake hands with the
other station.
If you have out of range for more than two minutes, your radio senses
that no signal has been receives, a ringing beeper will sound, and
“
GROU OUT
” will appear on the LCD. If you subsequently move
back into range, as soon as the other station transmits, your beeper
will sound and “
GROU IN
” will appear on the LCD.
DTMF P
AGING
S
YSTEM
(
R
EQUIRES
FVP-25 O
PTIONAL
B
OARD
)
This system allows paging and selective calling, using DTMF tone
sequences.
When your radio is paged by a station bearing a tone sequence which
matches yours, your radio’s squelch will open and the alert will sound.
The three-digit code of the station which paged you will be displayed
on your radio’s LCD.
A
CCESSORIES
& O
PTIONS
FNB-V57
7.2 V 1100 mAh Ni-Cd Battery
FNB-V57IS
Intrinsically-Safe 7.2 V 1100 mAh Ni-Cd Battery
FNB-V67LIA
7.4 V 2300 mAh Lithium-Ion Battery
FNB-83
7.2 V 1400 mAh Ni-MH Battery
FNB-V94
7.2 V 1800 mAh Ni-MH Battery
FBA-25A
Alkaline Battery Case
VAC-10
Desktop Rapid Charger
(for
FNB-V57/-V57IS/-83/-V94
)
VAC-800
Desktop Rapid Charger (for
FNB-V57/-V57IS
)
VAC-810
Desktop Rapid Charger (for FNB-V67LIA)
VAC-6800
6-unit Multi Charger (for
FNB-V57/-V57IS
)
VAC-6810
6-unit Multi Charger (for
FNB-V67LIA
)
MH-45
B4B
Speaker/Microphone
MH-37
A4B
Earpiece Microphone
VC-25
VOX Headset
VCM-1
Mobile Mounting Bracket (for VAC-800/-810)
FVP-25
DTMF pager Unit
ATU-6D
Rubber Antenna 450-490 MHz
ATV-6XL
Untuned Antenna 134-174 MHz
ATV-8C
Rubber Antenna 161-174 MHz
CE47
Programming Software
FIF-12
USB Programming Interface
CT-27A
Radio to Radio Cloning Cable
CT-28
Programming Cable (for CT-29)
CT-29
RS-232C Programming Interface Cable
CT-106
Programming Cable (for FIF-12)
W
ARRANTY
P
OLICY
Vertex Standard warrants, to the original purchaser only, its Vertex
Standard manufactured communications products against defects in
materials and workmanship under normal use and service for a given
period of time from the date of purchase.
Limited Warranty Details:
North America customers (USA and Canada):
http://www.vertexstandard.com/lmr/warranty-terms.aspx
Customers outside of North America:
Contact the authorized dealer in your country.
Copyright 2013
Vertex Standard LMR, Inc.
All rights reserved.
No portion of this manual
may be reproduced
without the permission of
Vertex Standard LMR, Inc.
Printed in China
Vertex Standard LMR, Inc.
