Vertex Standard VX-800 User manual

1
Contents
Operating Manual Reprint ................................................................................................................................................ 2
Set (Menu) Mode Functions .............................................................................................................................................. 8
Specification ....................................................................................................................................................................... 11
Exploded Views & Miscellaneous Parts ....................................................................................................................... 12
Block Diagram .................................................................................................................................................................... 13
Circuit Description ............................................................................................................................................................ 15
Alignment ........................................................................................................................................................................... 18
Board Units (Schematics, Layouts & Parts)
MAIN Unit ...................................................................................................................................................................... 25
VR Unit ............................................................................................................................................................................ 53
SW Unit ............................................................................................................................................................................ 54
Dummy Unit ................................................................................................................................................................... 55
Optional Board Units (Schematics, Layouts & Parts)
F2D-8 2-Tone Decode Unit ............................................................................................................................................ 56
VTP-50 VX-Trunk Unit .................................................................................................................................................. 58
FVP-25 Encryption / DTMF Pager Unit ...................................................................................................................... 60
F5D-14 5-Tone Unit ........................................................................................................................................................ 62
©2004 VERTEX STANDARD CO., LTD. E126790A
VHF Band
Service Manual
VX-800
Introduction
The Vertex Standard VX-800 is a compact, hand-held
portable transceiver for the VHF land mobile bands
that offers the convenience of small size, light
weight, and simple operation. The VX-800 can be
programmed by your Vertex Standard Dealer with
up to 200 channels for both single and split fre-
quency operation. The VX-800 provides up to 5 watts
of RF output power and includes a flexible quick-
connect antenna.
The transceiver and Ni-Cd, Li-Ion battery packs are
constructed of thick high impact polycarbonate plas-
tic, with special attention paid by the designers to
tight sealing and ruggedness, assuring years of reli-
able operation even in harsh environments.
The following pages describe the operation, features
and accessories of the VX-800. Following the dis-
cussion of transceiver operation, details regarding
programming software, alignment, and mainte-
nance will follow.
VERTEX STANDARD CO., LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU EUROPE B.V.
P.O. Box 75525, 1118 ZN Schiphol, The Netherlands
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,
Kwun Tong, Kowloon, Hong Kong

2
Operating Manual Reprint
Controls & Connectors
BEFORE YOU BEGIN
Battery Pack Installation and Removal
To install the battery, hold the transceiver with
your left hand, so your palm is over the speaker
and your thumb is on the top of the belt clip. In-
sert the battery pack into the battery compart-
ment on the back of the radio while tilting the
Belt Clip outward, then close the Battery Pack
Latch until it locks in place with a “Click.”
To remove the battery, turn the radio off and re-
move any protective cases. Open the Battery Pack
Latch on the bottom of the radio, then slide the
battery downward and out from the radio while
unfolding the Belt Clip.
Do not attempt to open any of the recharge-
able Lithium-Ion and Ni-Cd packs, as they
could explode if accidentally short-circuited.
Low Battery Indication
As the battery discharges during use, the voltage
gradually becomes lower. When the battery volt-
age reaches 6.0 volts, it is time to substitute a
freshly charged battery and recharge the depleted
pack. The LED indicator on the top of the radio
will blink red when the battery voltage is low (6
Volts or lower).
OPERATION
Preliminary Steps
Install a charged battery
pack onto the transceiver, as
described previously.
Screw the supplied antenna
onto the Antenna jack.
Never attempt to operate
this transceiver without an
antenna connected.
If you have a Speaker/Mi-
crophone, we recommend
that it not be connected un-
til you are familiar with the
basic operation of the VX-800.
Operation Quick Start
Turn the top panel’s
VOL/PWR knob clock-
wise to turn on the ra-
dio on.
Pull and turn the top
panel's CH selector
knob to choose the de-
sired operating chan-
nel. A channel name
will appear on the LCD.
If you want to select the
operating channel from a different Memory
Channel Group, pressing the Soft key (assigned
to the Memory Group Up or Down function) to
Avoid recharging Ni-Cd batteries often with little
use between charges, as this can degrade the
charge capacity. We recommend that you carry
an extra, fully-charged pack with you so the op-
erational battery may be used until depletion (this
“deep cycling” technique promotes better long-
term battery capacity).
Notice !
There are no owner-serviceable parts inside the
transceiver. All service jobs must be referred to
an authorized Service
Representative. Consult your Authorized
Dealer for installation of
optional accessories.

3
Operating Manual Reprint
select the Memory Channel Group to be you want
before selecting the operating channel. A group
name will appear on the LCD whenever the Soft
key is pressed.
Note:Some models are programmed so that the
operating channels are selected by the Soft
key and the memory channel group is se-
lected by the channe selector knob. For fur-
ther details, contact your
dealer.
Rotate the VOL/PWR
knob to set the volume
level. If no signal is
present, press and hold
in the Monitor button
(the center button on
the left side) more than
2 seconds; background
noise will now be
heard, and you may use
this to set the VOL/PWR
knob for the desired au-
dio level.
Press and hold the Moni-
tor button more than 2 seconds (or press the Moni-
tor button twice) to quiet the noise and resume nor-
mal (quiet) monitoring.
To transmit, press and
hold the PTT switch.
Speak into the micro-
phone area of the front
panel grille (lower right-
hand corner) in a normal
voice level. To return to
the Receive mode, release the PTT switch.
Press the Soft key (if as-
signed to the Scan func-
tion) or switch the
Toggle Switch to the as-
signed “Scan” position
(when so programmed
by your dealer) to start
the scanner. The scanner rapidly steps through
each of the dealer-programmed channels, look-
ing for incoming calls.
Press the top panel’s
SEL1/SEL2 key to acti-
vate one of the
preprogrammed func-
tions which may have
been enabled at the time
of programming by the
dealer. Similarly, when using the 16-key version,
the [A], [B], [C], and [D] function keys activate
one of these functions, if programmed by the
dealer. See the next section for details regarding
the available features.
Switch the top panel’s Toggle Switch to the [A],
[B] or [Center] position to activate one of the pre-
programmed functions which may have been en-
abled at the time of programming by the dealer.
When this switch is in the [A(left)], [B(right)] or
[Center] position, the feature programmed (by
your dealer) to that switch position will be acti-
vated. See the next section for details regarding
the available features.
Press the DTMF keys on the telephone keypad
while pressing the PTT switch to send DTMF
tones (16-key version only).
If a Speaker/Microphone is available, remove the
plastic cap and its two mounting screws from the
right side of the transceiver, then align the con-
nector of the Speaker/Microphone on the trans-
ceiver body; secure the connector pin using the
screws supplied with the Speaker/Microphone.
Hold the speaker grille up next to your ear while
receiving. To transmit, press the PTT switch on
the Speaker/Microphone, just as you would on
the main transceiver’s body, and speak into the
microphone on a normal voice level.
Note:Save the original plastic cap and its mount-
ing screws. They should be reinstalled when
not using the Speaker/Microphone.
ADVANCED OPERATION
Soft Key and Toggle Switch Functions
The VX-800 includes the [SEL1], [SEL2], [MON],
and [LAMP] Keys, and the Toggle Switch, while the
16-key version additionally provides [A], [B], [C],
[D] function Keys. The Soft key and Toggle Switch
functions can be customized, via programming by
your dealer, to meet your com-
munications/network requirements. Some features
may require the purchase and installation of optional
internal accessories. The possible Soft key and
Toggle Switch programming features are illustrated

4
Operating Manual Reprint
at the right, and their functions are explained on
page 8. For further details, contact your
dealer. For future reference,
check the box next to each function that has been
assigned to the Soft key and Toggle Switch on your
particular radio, and keep it handy.
Description of Operating Functions
Channel Scan
The Scanning feature is used to monitor multiple signals
programmed into the transceiver. While scanning, the trans-
ceiver will check each channel for the presence of a signal,
and will stop on a channel if a signal is present.
One key or switch may be assigned to the Scan function, as
follows:
One of the Soft keys may be assigned for Scan opera-
tion; or
The Toggle switch may have one position assigned to
the Scan function.
To activate scanning:
Press the assigned Soft key, or set the Toggle switch to
the assigned position.
The scanner will search the channels, looking for active
ones; it will pause each time it finds a channel on which
someone is speaking.
To stop scanning:
Press the assigned Soft key, or set the Toggle switch to
a different position.
Operation will revert to the channel to which the CH
knob is set.
*requires DTMF/Encryption Unit
None
Channel Scan
Dual Watch
High/Low Power
Talk Around
TX Save Disable
LCD Invert
Encryption Disable*
Follow-Me DW
Call/Reset*
Speed Dial*
Emergency*
Group Up
Group Down
Channel Up
Channel Down
Monitor
Lamp
ABC D
Soft Key
Functions
None
Channel Scan
Dual Watch
High/Low Power
Talk Around
TX Save Disable
LCD Invert
Encryption Disable*
Follow-Me DW
Call/Reset*
Speed Dial*
Emergency*
Group Up
Group Down
Channel Up
Channel Down
Monitor
Lamp
SEL2 MON LAMP SEL1
Soft Key
Functions
Toggle Switch (Position)
AB
None
Channel Scan
Dual Watch
High/Low Power
Talk Around
TX Save Disable
LCD Invert
Encryption Disable*
Lock
Follow-Me Scan
Group recall Shortcut
Functions center
Group 1
Group 2
Group 3
Group 1
Group 2
Group 3
Group 1
Group 2
Group 3 *requires DTMF/Encryption Unit
*requires DTMF/Encryption Unit

5
Operating Manual Reprint
Note: Your dealer may have programmed your radio
to stay on one of the following channels if you
press the PTT switch during scanning pause:
Current channel (“Talk Back”)
“Last Busy” channel
“Priority” channel
“Home” channel
“Scan Start” channel
Dual Watch
The Dual Watch feature is similar to the Scan feature,
except that only two channels are monitored:
The current operating channel; and
The “Priority” channel.
To activate Dual Watch:
Press the assigned Soft key, or set the Toggle switch
to the assigned position.
The scanner will search the two channels; it will pause
each time it finds a channel on which someone is speak-
ing.
To stop scanning:
Press the assigned Soft key, or set the Toggle switch
to a different position.
Operation will revert to the channel to which the CH
knob is set.
High/Low Power
Press the assigned Soft key or switch the Toggle
Switch to the assigned position to set the radio’s
transmitter to the “Low Power” mode, thus extend-
ing battery life. Press the assigned Soft key again or
switch the Toggle Switch to the other Position to
return to “High Power” operation when in difficult
terrain.
Talk Around
Press the assigned Soft key or switch the Toggle
Switch to the assigned position to activate the Talk
Around feature when you are operating on duplex
channel systems (separate receive and transmit fre-
quencies, utilizing a “repeater” station). The Talk
Around feature allows you to bypass the repeater
station and talk directly to a station that is nearby.
This feature has no effect when you are operating
on “simplex” channels, where the receive and trans-
mit frequencies are already the same.
Note that your dealer may have made provision for
“Talk Around” channels by programming “re-
peater” and “Talk Around” frequencies on two ad-
jacent channels. If so, the key may be used for one of
the other Pre-Programmed Functions.
TX Save Disable
Press the assigned Soft key or switch the Toggle
Switch to the assigned position to disable the Trans-
mit Battery Saver, if you are operating in a location
where high power is almost always needed.
The Transmit Battery Saver helps extend battery life
by reducing transmit power when a very strong sig-
nal from an apparently nearby station is being re-
ceived. Under some circumstances, though, your
hand-held radio may not be heard well at the other
end of the communication path, and high power may
be necessary at all times.
LCD Invert
Press the assigned Soft key or switch the Toggle
Switch to the assigned position inverts the LCD dis-
play to backward-facing readout (the backward dis-
play is convenient for viewing when wearing the
transceiver on your belt). Press the assigned Soft key
again or switch the Toggle Switch to the other
Positionreturn the LCD display to frontward-facing
readout.
Encryption Disable
Press the assigned Soft key or switch the Toggle
Switch to the assigned position to turn off the op-
tional voice encryption unit temporarily, for use
when an incorrect setting of (or failure in) the en-
cryption system at one end of the communication
path has made it impossible to talk to the other sta-
tion.
Remember that disabling the encryption will mean
that your transmissions are no longer secure. Return
to the encrypted mode as soon as possible, and do
not discuss any critical or confidential information
while in the non-encrypted mode of operation.
Lock
Switch the Toggle Switch to lock the top-panel keys;
this can be enabled to prevent radio settings from
being disturbed.

6
Follow-Me Scan
“Follow-Me” Scan feature checks a User-assigned
Priority Channel regularly as you scan the other
channels. Thus, if only Channels 1, 3, and 5 (of the 8
available channels) are designated for “Scanning,”
the user may nonetheless assign Channel 2 as the
“User-assigned” Priority Channel via the “Follow-
Me” feature.
To activate “Follow-Me” scanning, first select the
channel you want to designate as the “User-As-
signed Priority Channel” and Switch the Toggle
Switch to the assigned position. Then turn the CH
selector knob to the “Scanning Start” channel which
has been programmed by your dealer to activate the
scanner. When the scanner stops on an “Active”
channel, the User-assigned Priority Channel will
automatically be checked every few seconds; if ac-
tivity is found on the User-assigned Priority Chan-
nel, the radio will switch between it and the Dealer-
Assigned Priority Channel, if any.
Follow-Me DW
To set up a “Dual Watch” frequency pair using the
“Follow-Me” feature, select a channel using the CH
selector knob. Now press the assigned Soft key;
pressing the assigned Soft key locks the current
channel as the User-assigned Priority Channel. Now
rotate the CH selector knob to another channel (not
the “Scanning Start” channel). Your radio will now
switch back-and-forth between the currently-se-
lected channel (shown on the CH selector knob) and
the User-assigned Priority Channel.
During “Follow-Me” scanning (after you have
pressed the key), you can set up the “Dual Watch”
feature by rotating the CH selector knob to another
channel. The radio will then scan back and forth
between the original User-assigned Priority Chan-
nel and the newly-selected channel.
The Priority Channel you have assigned (before
pressing the key) will be retained in memory until
you change it.
Channel Group Selection
The VX-800 is capable of separating its 200 memory
channels into any of ten Groups. There is no limit
as to the number of channels which may be assigned
Operating Manual Reprint
to each Group. The Dealer will have made the Group
assignment at the time of channel programming. At
the same time, one of the Soft Keys will be assigned
as the Channel Group Selection key.
To change Channel Groups, press the assigned soft
key to step through the available Groups. Once the
desired Group is reached, rotate the CH selector
knob to select the desired channel within the selected
Group.
You may wish to have the Scanner (described previ-
ously) pass through more than one Group during
the scanning process (normally, scanning is per-
formed within the current group only). To include
the current Group in the scanning loop, press and
hold in the assigned Soft key for one second.
To remove a Group from Group Scan, press and hold
in the assigned Soft key again for one second.
Multi-Group Scanning is only possible if you are
using the “User Scan” list.
The VX-800 has two scanning “lists:” the “Dealer
Scan” list and the “User Scan” list. The “Dealer Scan”
list is a fixed group of stations which will be included
when scanning is activated. The “User Scan” list is a
different list, initially arranged by the Dealer, which
may be modified by the User (if, for example, you
want to delete one or more of these channels from
the scanning list).
To edit the User Scan list, press and hold the Soft
key (assigned to the Group Up/Down function) to
delete the current Memory Group from the Scan-
ning. Alternatively, press and hold the “Scan” Soft
key for one second to delete the Current Memory
channel from the Scanning.
When you delete a Group or channel, “-SKIP-” will
appear on the LCD for one second after pressing the
Soft key. To restore a particular channel to your scan-
ning list, press and hold in the Soft key again for
one second; “-STOP-” will appear on the LCD for
one second after pressing the Soft key.

7
Operating Manual Reprint
Call/Reset
This feature, if enabled, allows the user to change
the 3-digit Page Call code, used to call other simi-
larly-equipped stations. Press the Dealer-assigned
Soft key, followed by the three digits representing
the Page Call code of the station you wish to call.
Three tones will be heard after the last key is pressed
(the new code will now be transmitted).
The receiver squelch of the other station will be
opened, and you can begin communication.
Speed Dial
Your Dealer may have pre-programmed Auto-Dial
telephone number memories into your radio.
To dial a number, press the numbered key corre-
sponding to the Auto-Dial memory number list pro-
vided by your Dealer while pressing the PTT switch.
Once the telephone number has begun (you will hear
the tones in the speaker), you can release the PTT
switch.
Emergency
The VX-800 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 nearest dealer.
ARTS
(AUTO RANGE TRANSPOND SYSTEM)
This system is designed to inform you when you and
another ARTS-equipped station are within commu-
nication range.
During ARTS operation, your radio automatically
transmits for about 1 second every 25 seconds (the
interval is programmed by the Dealer) in an attempt
to shake hands with the other station.
If you move out of range for more than two min-
utes, your radio senses that no signal has been re-
ceived, a ringing beeper will sound, and "OUT OF
SERVICE" will scroll on the LCD. If you subse-
quently move back into range, as soon as the other
station transmits, your beeper will sound, and "IN
SERVICE" will scroll on the LCD.
DTMF PAGING SYSTEM
This system allows paging and selective calling, us-
ing 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 ringer will sound (unless you
have disabled it, as described previously).
The three-digit code of the station which paged you
will be displayed on your radio’s LCD.
ACCESSORIES & OPTIONS
FVP-25 Encryption/DTMF Pager Unit
F2D-8 2-Tone Decode Unit
FNB-V57 7.2 V 1100 mAh Ni-Cd Battery
FNB-V57IS Intrinsically-Safe 7.2 V 1100 mAh Ni-
Cd Battery
FNB-V62LI 7.4 V 1600 mAh Lithium-Ion Battery
FBA-25A Battery Case
VAC-800 Rapid Desktop Charger (for FNB-V57,
FNB-V57IS, FNB-V62LI)
VTP-50 VX-Trunk Unit
MH-50A7A Speaker/Microphone
CT-70 CT-29 to Radio Programming Cable
CT-71 PC Programming Cable
CT-72 Radio to Radio Programming Cable
ATV-6A 134~151 MHz Stubby Antenna
ATV-6B 150~163 MHz Stubby Antenna
ATV-6C 161~174 MHz Stubby Antenna
ATV-6XL 134~174 MHz Untuned Antenna
Availability of accessories may vary; some accessories are
supplied as standard per local requirements, others may
be unavailable in some reqions. Check with your Vertex
Standard Dealer for changes to the above list.

8
One or more of the radio’s “Soft Keys” may be en-
abled for a function associated with the “Set” (Menu)
mode. This feature, when activated, allows the user
to customize certain performance aspects of the VX-
800. Note that some of these items may also appear
as available “Soft Keys,” described below.
The operating procedure for the Menu mode is quite
simple, requiring only a few easily-remembered ac-
tions on the user’s part.
The VX-800 Soft Keys include the [SEL1], [SEL2],
[MON], and [LAMP] Keys, plus the [A], [B], [C], and
[D] keys on the 16-key version. The Soft Key func-
tions can be assigned either as a “Menu” function
or an “operating” function at the time of program-
ming.
Basic Menu Mode Operation
1. Press the appropriate Soft Key to activate a Menu
function. The available keys include the [SEL1],
[SEL2], [MON], and [LAMP] Keys, plus the [A],
[B], [C], and [D] keys on the 16-key version.
2. Rotate the top panel’s CH selector knob to select
the feature you wish to view and/or modify.
3. Press the [SEL1] and/or [SEL2] keys to modify
or adjust the current setting of this Menu item
(“On” to “Off,” etc.).
4. Rotate the CH selector to save the new setting.
5. Press the PTT switch to exit the Set (Menu) mode.
Available Soft Key Menu Functions
No.1 SQL (Squelch Level)
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to find the point where the background
noise is just silenced. This is the point of best re-
ceiver sensitivity consistent with quiet monitoring.
The scale for the Squelch Level adjustment is 0 ~ 11
and 12 (RSSI SQL), The default value is 8.
Rotate the CH selector knob to save the new setting,
then press the PTT switch to exit the Set (Menu) mode.
When the Squelch Level is set to “12,” this activates
the RSSI (Received Signal Strength Indicator)
Squelch feature, which allows you to set the squelch
so that only signals exceeding a prescribed received-
signal input level will open the squelch. The RX sig-
nal input level is determined via the Alignment Pro-
gram SVC31. See page 20 for details regarding the
RSSI level setting.
No.2 LIST (Scanning List)
The VX-800 has two scanning “lists:” the “Dealer
Scan” list and the “User Scan” list. The “Dealer Scan”
list is a fixed group of stations, programmed by the
dealer, which will be included when scanning is ac-
tivated. The “User Scan” list is a different list, ini-
tially arranged by the dealer, which may be modi-
fied by the User.
This Menu Item allows you to select either scanning
list: “Dealer Scan” or “User Scan.” After selecting
this Menu Item, press the [SEL1] or [SEL2] key to
select the Scan List in which you wish to scan (“LIST
DLR:” Dealer List or “LIST USR:” User List). Rotate
the CH selector knob to save the new setting, then
press the PTT switch to exit the Set (Menu) mode.
No.3 BEEP (Keypad Beeper On/Off)
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to enable (ON) or disable (OFF) the key-
pad beep tones. Rotate the CH selector knob to save
the new setting, then press the PTT switch to exit
the Set (Menu) mode.
No.4 BELL (CTCSS/DCS/Paging Alert Bell On/Off)
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to enable (ON) or disable (OFF) the alert
bell which sounds when your radio is called using
either CTCSS or DCS calling tones. Rotate the CH
selector knob to save the new setting, then press the
PTT switch to exit the Set (Menu) mode.
No.5 LGT (TX/BUSY LED On/Off)
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to enable (ON) or disable (OFF) the LED
which serves as the Busy Channel and Transmitter
On indicator. Turning this LED off will extend bat-
tery life somewhat. Rotate the CH selector knob to
save the new setting, then press the PTT switch to
exit the Set (Menu) mode.
No.6 LOCK (Keypad, PTT, or Knob Disabling)
In some situations, you may wish to disable the key-
pad’s keys, the CH selector knob, and/or the PTT
switch (so as to prevent transmission by unautho-
rized users of the radio). The LOCK Menu deter-
mines which features will be disabled when the
LOCK function is engaged.
After selecting this Menu Item, press the [SEL1] or
Set (Menu) Mode Functions

9
[SEL2] key to select “P” (PTT Lock), “D” (Dial-Knob-
Lock), “K” (Keypad Lock), or various combinations
of these. Rotate the CH selector knob to save the new
setting, then press the PTT switch to exit the Set
(Menu) mode.
No.7 GROUP (Group Select)
This Menu Item allows you to change Channel
Groups, in the event that a Soft Key has not been
designated for this purpose. After selecting this
Menu Item, press the [SEL1] or [SEL2] key to select
the Channel Group in which you wish to operate.
Rotate the CH selector knob to save the new setting,
then press the PTT switch to exit the Set (Menu)
mode.
No.8 SCAN (Scan Mode On/Off)
This Menu Item allows you to start the scanner, in
the event that a Soft Key has not been designated
for this purpose.
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to start (“SCAN ON”) or stop (“SCAN
OFF”) the scanner. Rotate the CH selector knob to
save the new setting, then press the PTT switch to
exit the Set (Menu) mode.
No.9 DW (Dual Watch On/Off)
This Menu Item allows you to activate the Dual
Watch feature, in the event that a Soft Key has not
been designated for this purpose.
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to enable (“DW ON”) or disable (“DW
OFF”) the Dual Watch feature. Rotate the CH selec-
tor knob to save the new setting, then press the PTT
switch to exit the Set (Menu) mode.
No.10 TA (Talk Around)
This Menu Item allows you to activate the Talk
Around feature, in the event that a Soft Key has not
been designated for this purpose.
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to enable (“TA ON”) or disable (“TA
OFF”) the Talk Around feature. Rotate the CH se-
lector knob to save the new setting, then press the
PTT switch to exit the Set (Menu) mode.
No.11 ENCR (Encryption)
On channels where scrambling is used, an incorrect
setting of (or failure in) the encryption system at one
end of the communication path will make it impos-
sible to talk to the other station.
To change the current status of encryption on your
radio, after selecting this Menu Item, press the
[SEL1] or [SEL2] key to enable (ENCR EN) or dis-
able (ENCR DI) encryption. Rotate the CH selector
knob to save the new setting, then press the PTT
switch to exit the Set (Menu) mode.
Remember that disabling encryption will mean that your
transmissions are no longer secure. Return to the encrypt-
ed mode as soon as possible, and do not discuss any criti-
cal or confidential information while in the non- encrypt-
ed mode of operation.
No.12 AF VR
This Menu Item determines the audio volume level
when the top panel’s VOL knob is set to the fully
counterclockwise position (but not into the click
stop).
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to select the desired (minimum) volume
level. Rotate the CH selector knob to save the new
setting, then press the PTT switch to exit the Set
(Menu) mode.
No.13 BP VR (Beep VR)
This Menu Item determines the beep volume level.
After selecting this Menu Item, press the [SEL1] or
[SEL2] key to select the desired level. Rotate the CH
selector knob to save the new setting, then press the
PTT switch to exit the Set (Menu) mode.
Set (Menu) Mode Functions

10
Set (Menu) Mode Functions
Note:

11
Specifications
GENERAL
Frequency Range: 134-160, 148-174 MHz
Number of Channels: 200 channels
Channel Spacing: 12.5/25/30 kHz
Battery Voltage: 7.4 VDC
Temperature Range: –30°C to +60°C
Frequency Stability: better than ±2.5 ppm
Case Size (WHD): 58 x 110 x 28.9 mm w/FNB-V62LI
Weight (approx.): 300 grams with FNB-V62LI, antenna, belt clip
RECEIVER
Circuit Type: Double-conversion superheterodyne
IFs: 22.05 MHz & 450 kHz
12-dB SINAD Sensitivity: < 0.25 µV
Squelch Sensitivity: < 0.25 µV
Selectivity: > 75 dB (25 kHz)/> 70 dB (12.5 kHz)
Intermodulation: > 75 dB (25 kHz)/> 68 dB (12.5 kHz)
Spurious Rejection: > 75 dB
AF Output: 0.5 W @ 16 Ω, 3 % THD (BTL output)
TRANSMITTER
Power Output: 5.0/2.5/1.0/0.25 W (Selectable)
Modulation System: Direct FM
Maximum Deviation: ±5 kHz (25 kHz)/±2.5 kHz (12.5 kHz)
FM Noise: > 45 dB (25 kHz)/> 40 dB (12.5 kHz)
Spurious Emission: > 70 dB below carrier
AF Distortion (@ 1 kHz): < 3 %
Microphone Type: 2-k Ωcondenser
Specifications are subject to change without notice or obligation.

12
Exploded View & Miscellaneous Parts
MAIN UNIT
RA0123500
LATCH NAIL
RA0215000
EXT CAP
M4090141
SPEAKER
RA010300A (Lot. 1~15)
RA010300B (Lot. 16~)
KNOB
RA0228800
KNOB
RA0206300 (Lot.1~5)
RA0229300 (Lot.6~)
RUBBER PACKING
CS1673001
REAR CASE ASS'Y
(with ANT CONNECTOR (SMA))
RA008920A (Lot.1~14)
RA008920B (Lot.15)
RA008920B (Lot.16~)
O RING
RA0111500
SPECIAL NUT
RA0112300
COIL SPRING
RA0111400
RING NUT
CP6536001
BELT CLIP ASS'Y
RA0207100 (Lot. 1~9)
RA020710A (Lot. 10~)
TERMINAL PLATE (+)
RA0207200
TERMINAL PLATE (−)
RA0205800 (Lot.~6)
RA020580A (Lot.7~14)
RA020580B (Lot.15~)
FRONT CASE







Non-designated parts are available only as
part of a designated assembly.
RA0205600 (Lot.1~5)
RA020560A (Lot.6~14)
RA020560B (Lot.15~)
FRONT CASE (16KEY)

VR UNIT
RA0206600
KNOB (Orange:Antenna side)
RA0206900
O RING
RA0207400
INTER CONNECTOR
RA0207500
INTER CONNECTOR
RA0207600
INTER CONNECTOR
RA0207900 (Lot.1~9)
RA020790A (Lot.10~)
HOLDER RUBBER
RA0206400
LCD HOLDER
RA0206800
HOLDER PLATE
G6090136
LCD RA0206200
LIGHT GUIDE
RA0088900 (Lot.1~9)
RA008890A (Lot.10~)
O RING
DUMMY UNIT
RA0207000
COIL SPRING
RA0215400
SHEET
RA0217300
MYLAR SHEET
RA0217400
REFLECTOR SHEET
RA0228300
KNOB (Gray:Toggle Switch side)
RA0173700
RUBBER KNOB (16KEY)
12
12







11


U9900094 TAPTITE SCREW M2X5NI#2 2
U9900069 TAPTITE SCREW M2X9.5NI#2 3
U9900092 PAN HEAD SCREW M1.7X14AU#2 1
U9900093 (Lot. 1) TAPTITE SCREW M1.7X5NI#2 3
U9900105 (Lot. 2~) TAPTITE SCREW M1.7X4NI#2
U9900084 BINDING HEAD SCREW M2X7.5B 1
U9900063 TAPTITE SCREW 2X3.3NI 2
U20305007 BINDING HEAD SCREW M3X5B 2
U9900068 TAPTITE SCREW M2X4NI#3 3
U9900086 TAPTITE SCREW M1.7X2.5B 2
U07230107 PAN HEAD SCREW M2X3B #1 3
U07225102 PAN HEAD SCREW M2X2.5NI #1 1
U02206007 SEMS SCREW SM2.6X6B 2
REF. VXSTD P/N Description Qty.
RA0229000 (Lot. 1)
RA0239100 (Lot. 2~)
INTER CONNECTOR
P1091084
CONNECTOR
RA020830A
DOUBLE FACE
RA0236000 (Lot. 1~6)
SPACER (EXT)


RA0210300
RUBBER KNOB
RA0207800
HOLDER RUBBER

13
Block Diagram

14
Note:
Block Diagram

15
Circuit Description
Overview
The VX-800V is a VHF/FM hand-held transceiver
designed to operate in the frequency range of 134 to
174MHz.
Circuit Configuration by Frequency
The receiver is a double-conversion superhetero-
dyne with a first intermediate frequency (IF) of 22.05
MHz and a second IF of 450 kHz. Incoming signals
from the antenna are mixed with the local signal
from PLL to produce the first IF of 22.05 MHz.
This is then mixed with the 21.6 MHz second local
oscillator output to produce the 450 kHz second IF.
This is detected to give the demodulated signal.
The transmit signal frequency is generated by PLL
VCO, and modulated by the signal from the micro-
phone. It is then amplified and sent to the antenna.
Receive Signal Path
Front-end RF amplifier
Incoming RF from the antenna jack is delivered to
the RF Unit and passes through a low-pass filter and
high-pass filter consisting of coils L1004, L1005,
L1006, L1001, L1002, and L1003, capacitors C1013,
C1014, C1015, C1017, C1019, C1020, C1006, C1007,
C1008, and C1009, and antenna switching diode
D1020 (HSU277).
Signals within the frequency range of the transceiver
are then amplified by Q1001 (2SC5226-4/5) and en-
ter a varactor-tuned band-pass filter consisting of
coils L1008, L1010, L1011, and L1012, capacitors
C1042, C1044, C1045, C1046, C1047, C1068, C1069,
C1070, C1071, C1072, C1073, C1074, C1075, C1098,
C1099, and C1100, and diodes D1018, D1023, D1024,
and D1027 (all HVC350) before delivery to the first
mixer.
First Mixer
Buffered output from the VCO is amplified by Q1030
(2SC5226-4/5) to provide a pure first local signal
between 112.3 and 152.3 MHz for injection to the
first mixer, D1030 (GN2011-Q). The 22.05 MHz first
mixer product then passes through monolithic crys-
tal filters XF1001 and XF1002 (22-11B-FP2, 5.5 kHz
BW), to strip away all but the desired signal.
IF amplifier
The first IF signal is amplified by Q1037 (2SC5226-4/5).
The amplified first IF signal is applied to FM IF sub-
system IC Q1046 (TA31136FN) which contains the
second mixer, second local oscillator, limiter ampli-
fier, noise amplifier, and S-meter amplifier.
The IF signal is then mixed with the second local/
PLL reference oscillator Q1022, derived from 21.6
MHz crystal X1002, to produce the 450 kHz second
IF when mixed with the first IF signal within Q1046.
The second IF then passes through the ceramic fil-
ter CF1001 (PBFC450R15D) or CF1002 (SFPC450G:
Narrow-band Channels) to strip away unwanted
mixer products, and is applied to the limiter ampli-
fier in Q1046, which removes amplitude variations
in the 450 kHz IF, before detection of the speech by
the ceramic discriminator CD1001 (CDBC450CX24).
Audio amplifier
Detected audio from Q1046 is applied to Q1028
(AK2345) and audio low-pass filter, and then past
the volume control Q1025 (M62364FP) to the audio
amplifier Q1017 (TDA2822D: external speaker) or
Q1060 (TDA2822D: internal speaker), providing up
to 0.5 Watts to the optional headphone jack or 16W
loudspeaker.
Attention : Audio output is BTL output.
Squelch Control
The squelch circuitry consists of a noise amplifier
and band-pass filter within Q1046, and noise detec-
tor D1053 (DA221).
When no carrier is received, noise at the output of
the detector stage in Q1046 is amplified and band-
pass filtered by the noise amplifier section of Q1046
and the network between pins 7 and 8, and then rec-
tified by D1053.
The resulting DC squelch control voltage is passed
to pin 19 of the microprocessor Q1048. If no carrier
is received, this signal causes pin 32 of Q1048 to go
low and pin 89 to go high. Pin 32 signals Q1008
(CPH6102), Q1062 (UMC5N), and Q1063 (UMC5N)
to disable the supply voltage to audio amplifiers
Q1017 and Q1060, while pin 89 makes Q1014
(UMG2N) hold the green (Busy) half of the LED off,
when pin 32 is low and pin 89 is high.

16
Circuit Description
Thus, the microprocessor blocks output from the
audio amplifier, and silences the receiver while no
signal is being received, and during transmission.
When a carrier appears at the discriminator, noise
is removed from the output, causing pin 19 of Q1048
to go low and the microprocessor to blink the busy
LED via Q1048.
The microprocessor then checks the DTMF decoder
chip on the Optional Unit, or checks for CTCSS or
CDCSS code squelch information, if enabled, respec-
tively. If not transmitting and CTCSS or CDCSS is
not activated, or if the received tone or code matches
that programmed, the microprocessor stops scan-
ning, if active, and allows audio to pass through the
audio amplifier Q1017/Q1060 (TDA2822D) to the
loudspeaker by enabling the supply voltage to it via
Q1008, Q1062, and Q1063.
Transmit Signal Path
Microphone amplifier
Speech input from the microphone is amplified in
Q1022 (NJM2902V), then filtered and sent to Q1025
(M62364FP) and passed to the Dummy Unit (or one
of the Optional Units). The audio which returned
from Dummy Unit passes through Q1028 (AK2345)
for pre-emphasis.
The processed audio may then be mixed with a
CTCSS tone generated by Q1028 (AK2345) and is
delivered to D1035 (HVC350) for frequency modu-
lation of the PLL carrier up to ±5 kHz from the
unmodulated carrier at the transmitting frequency.
If an external microphone is used, PTT switching is
controlled by Q1007 (UMZ2N), which signals the
microprocessor when the impedance at the micro-
phone jack drops.
If a CDCSS code is enabled for transmission, the code
is generated by microprocessor Q1048 and delivered
to D1055 (HVC350) for CDCSS modulating.
If DTMF is enabled for transmission, the tone is gen-
erated by the microprocessor Q1048 and applied to
the splutter filter section in place of speech audio.
Also, the tone is amplified for monitoring in the
loudspeaker.
Noise canceling microphone circuit
The two signals from the internal microphone (main
and sub) are injected to the positive input (sub) and
to the negative input (main) of Q1022 (NJM2902V).
If the same signal is applied to both main and sub,
the “main” signal is canceled at the output of Pin 7
of Q1022. In other words, noise from nearby sources
not directly connected to the transceiver enters the
main and sub input at the same signal and is there-
fore is canceled out.
When a signal is only input to main and there is no
signal at sub, the main signal is passed intact from
Q1022.
Driver and Final Amplifiers
The modulated signal from the VCO Q1039
(2SC5226-4/5) is buffered by Q1034 (2SC5226-4/5)
and amplified by Q1030 (2SC5226-4/5). The low-
level transmit signal is then applied to the Power
Module Q1019 (PF0314) for final amplification up
to 5 watts output power.
The transmit signal then passes through the antenna
switch D1020 (HSU277) and is low-pass filtered to
suppress away harmonic spurious radiation before
delivery to the antenna.
Automatic Transmit Power Control
RF power output from the final amplifier is sampled
by C1016 and C1018, and is rectified by D1019
(RB715F). The resulting DC is fed back through
Q1018 (BA10324AFV) to the Power Module, for con-
trol of the power output.
The microprocessor selects either high or one of three
low power levels.
Transmit Inhibit
When the Transmit PLL is unlocked, pin 18 of PLL
chip Q1054 goes to a logic low. The resulting DC
unlock control voltage is passed to pin 20 of the mi-
croprocessor Q1048. While the transmit PLL is un-
locked, pin 85 of Q1048 remains low, which then
turns off the Automatic Power Controller Q1018
(BA10324AFV) to disable the supply voltage to the
Power Module Q1019, disabling the transmitter.

17
Spurious Suppression
Generation of spurious products by the transmitter
is minimized by the fundamental carrier frequency
being equal to final transmitting frequency, modu-
lated directly in the transmit VCO. Additional har-
monic suppression is provided by a low-pass filter
consisting of L1004, L1005, and L1006 and C1013,
C1014, C1015, C1017, C1019, and C1020, resulting
in more than 60 dB of harmonic suppression prior
to delivery to the antenna.
PLL Frequency Synthesizer
The PLL frequency synthesizer consists of the VCO
Q1033 (2SC5226-4/5:RX) and Q1039 (2SC5226-4/
5:TX), VCO buffers Q1033 (2SC5226-4/5), Q1041
(2SC5226-4/5), and Q1030 (2SC52264/5), PLL sub-
system IC Q1054 (SA7025DK), and 21.6MHz refer-
ence crystal X1002.
The frequency stability is ±2.5 ppm within a tem-
perature range of –22°F to +140°F (–30°C to +60°C).
The output of the 21.6 MHz reference is applied to
pin 8 of the PLL IC.
While receiving, VCO Q1033 oscillates between
111.94 and 151.94 MHz according to the transceiver
version and the programmed receiving frequency,
for provision of the first local signal. In transmit, the
VCO generates a signal at 134 to 174 MHz.
The output of the VCO is amplified by the Q1041
and routed to pin 5 of the PLL IC. It also is amplified
by Q1030 and routed to the first local or Power Mod-
ule according to instructions from D1031.
The PLL IC consists of a prescaler, fractional divider,
reference divider, phase comparator, charge pump.
This PLL IC is a fractional-N type synthesizer and
utilizes a 40 kHz, 50 kHz, or 60 kHz reference signal
which is the eighth harmonic of the channel step (5,
6.25 or 7.5kHz). The input signal from pin 5 and 8 of
the PLL IC is divided down to the 40/50/60 kHz ref-
erence, and compared at the phase comparator. The
pulsed output signal of the phase comparator is ap-
plied to the charge pump and transformed into a
DC signal in the loop filter. The DC signal is applied
to pin 1 of the VCO and locked to keep the VCO
frequency constant.
PLL data is sent from DTA (pin 100), CLK (pin 2)
and PSTB (pin 98) of the microprocessor Q1048. The
data are iapplied to the PLL IC when the channel is
changed or when transmission is changed to recep-
tion and vice versa. A PLL lock condition is always
monitored by pin 20 of Q1048. When the PLL is un-
locked, the “UL” line goes low.
Miscellaneous Circuits
Push-To-Talk Transmit Activation
The PTT switch on the microphone is connected to
pin 36 of microprocessor
Q1048, so that when the PTT switch is closed, pin 85
of Q1048 goes high. This signals the microprocessor
to activate the TX / RX controller Q1004 (UMG2N),
which then disables the receiver by disabling the 5
V supply bus at Q1011 (UN911F), which is fed to the
receiver front-end, FM IF subsystem IC Q1046, and
receiver VCO circuitry.
At the same time, Q1003 (XP1501) and Q1002
(CPH6102) activate the TX 5 V supply line to enable
the transmitter.
Circuit Description

18
Alignment
Introduction
The VX-800 is carefully aligned at the factory for the
specified performance across the frequency range
specified for each version. Realignment should
therefore not be necessary except in the event of a
component failure, or when altering the version
type. All component replacement and service should
be performed only by an authorized Vertex Stan-
dard representative, or the warranty policy may be
void.
The following procedures cover the sometimes criti-
cal and tedious adjustments that are not normally
required once the transceiver has left the factory.
However, if damage occurs and some parts subse-
quently are placed, realignment may be required. If
a sudden problem occurs during normal operation,
it is likely due to component failure; realignment
should not be done until after the faulty component
has been replaced.
We recommend that servicing be performed only
by authorized Vertex Standard service technicians
who are experienced with the circuitry and fully
equipped for repair and alignment. Those who do
undertake any of the following alignments are cau-
tioned to proceed at their own risk. Problems caused
by unauthorized attempts at realignment are not
covered by the warranty policy. Also, Vertex Stan-
dard reserves the right to change circuits and align-
ment procedures, in the interest of improved per-
formance, without notifying owners.
Under no circumstances should any alignment be
attempted unless the normal function and opera-
tion of the transceiver are clearly understood, the
cause of the malfunction has been clearly pinpointed
and any faulty components replaced, and realign-
ment determined to be absolutely necessary.
Do not attempt to perform only a single step unless
it is clearly isolated electrically from all other steps.
Have all test equipment ready before beginning, and
follow all of the steps in a section in the order pre-
sented.
The following test equipment (and thorough famil-
iarity with its correct use) is necessary for complete
realignment. Correction of problems caused by mis-
alignment resulting from use of improper test equip-
ment is not covered under the warranty policy. While
most steps do not require all of the equipment listed,
the interactions of some adjustments may require
that more complex adjustments be performed after-
wards.
Required Test Equipment
ÌRF Signal Generator with calibrated output level
at 200 MHz
ÌDeviation Meter (linear detector)
ÌIn-line Wattmeter with 5% accuracy at 200 MHz
Ì50-ΩRF Dummy Load with power rating 10W at
200 MHz
Ì16-ΩAF Dummy Load
(Attention : Audio output is BTL output; do not
short "shield" to ground!)
ÌRegulated DC Power Supply (standard 7.5V DC,
3A)
ÌFrequency Counter with 0.2 ppm accuracy at 200
MHz
ÌAC Voltmeter
ÌDC Voltmeter
ÌVHF Sampling Coupler
ÌIBM PC / compatible Computer with Microsoft
DOS v3.0 or later operating system
ÌVertex Standard CT-71 Connection Cable and
SVC31 Alignment program
Alignment Preparation and Precautions
A 50-ΩRF Dummy Load and in-line wattmeter must
be connected to the main antenna jack in all proce-
dures that call for transmission, except where speci-
fied otherwise. Correct alignment is not possible
with an antenna.
After completing one step, read the following step
to determine whether the same test equipment will
be required. If not, remove the test equipment (ex-
cept dummy load and wattmeter, in connected) be-
fore proceeding.
Correct alignment requires that the ambient tem-
perature be the same as that of the transceiver and
test equipment, and that this temperature be held
constant between 68 °F ~ 86 °F (20°C and 30°C).
When the transceiver is brought into the shop from
hot or cold air, it should be allowed time to come to
room temperature before alignment.

19
Alignment
Whenever possible, alignments should be made with
oscillator shields and circuit boards firmly affixed
in place. Also, the test equipment must be thor-
oughly warmed up before beginning.
Note: Signal levels in dB referred to in the alignment
procedure are based on 0 dBµ EMF = 0.5 µV (closed cir-
cuit).
When connecting the CT-71 plug into the MIC/
SP jack of the VX-800, you must remove the
plastic cap and its mounting screws prior to
programming. Please remember to re-attach
the cap and screws when the programming is
complete.
Setup the test equipment as shown for transceiver
alignment, and apply 7.5V DC power to the trans-
ceiver. Refer to the drawings above for Alignment
Points.
The alignment mode is accessed by an "Alignment
mode" command from the computer while switch-
ing the transceiver on. And it is operated by the
alignment tool automatically.
During the alignment mode, normal operation is sus-
pended. Use the alignment tool program running
on PC.
The alignment tool outline
Installation of the Alignment Tool
This alignment tool consists of an executable file
“SVC31.exe” and an accompanying configuration
file “SVC31.cfg” which should be loaded per stan-
dard DOS procedures. Create a suitable directory,
then copy this file from the distribution diskette into
the new directory. For example, if copying the file
from Drive A, use the following DOS command se-
quence:
c:\ mkdir align800 [enter]
c:\ cd align800 [enter]
c:\align800\ copy a:SVC31.*
No further installation steps are required. If you wish
to utilize a different name for the alignment direc-
tory, it will not matter to the executable file.
Boot the Alignment Tool
Change to the “align800” directory (or the directory
name you utilized in the previous section). Now type
on the command line: SVC31 [ENTER] to boot the
alignment tool.
Entering the Alignment Mode
To enter the alignment mode, turn the transceiver
off, then press [0] on the computer keyboard. Now,
turn the transceiver back ON. When the command
has been successful, a message on the computer
screen will confirm that the transceiver is now in
the “Alignment” mode.
Action of the switches
When the transceiver is in alignment mode, the
[PTT], [MON], and [DIAL] switches, as well as the
Dial, are disabled. In the Alignment mode, all of the
transceiver’s operation is remotely controlled by PC.
Channels Frequency (Simplex)
Type- A
Band-LOW
Band-MID
Band-HIGH
134.000
147.000
160.000
146.000
160.000
174.000
Type- C
The transceiver must be programmed for use in the
intended system before alignment is attempted. The
RF parameters are loaded from the file during the
alignment process.
In order to facilitate alignment over the complete
switching range of the equipment it is recommended
that the channel data in the transceiver is preset as
the chart below.
Important Note
50 Ω
Dummy Load
Inline
Wattmeter
Deviation Meter
Frequency
Counter
RF Sampling
Coupler
RF Signal
Generator
Transceiver
Power Supply
7.5V DC
CT-71 connection
Cable
PC
MIC/SP
COM port

20
Alignment
Alignment Sequence
Although the data displayed on the computer’s
screen during alignment is temporary data, it is im-
portant that you follow the basic alignment sequence
precisely, so that the displayed data and the data
loaded into the transceiver are identical.
Basic Alignment Sequence
1. Enter the alignment mode
2. Upload data from transceiver
3. Align data
4. Download data to transceiver
Alignment Tool Menu
Common Data
The parameters in this section represent "common"
data for all channels. Once these "Common Data"
parameters are correctly aligned, the "TXPOWER,"
"MAX DEV," and "SUB AUDIO DEV," can be trimmed for
each channel, if needed.
During alignment, each parameter is adjusted for a
higher or lower value via the computer’s [] and
[] keys. When the desired value is reached, type
[ENTER] to lock in the new value.
(0) Common Tx :
The first alignment section adjusts transmit-mode
parameters which are common to all channels.
- [0] FREQUENCY
This parameter is used to adjust the PLL refer-
ence frequency. From the "(0) Common Tx" sec-
tion, press [0] to activate this alignment section.
• Press the [space] key on the keyboard to acti-
vate the transmitter.
• Press the [] or [] key, as need, so the counter
frequency is with in 50 Hz of the channel center
frequency for the MID channel.
• When the frequency is attained, press [ENTER]
to lock in the new data.
• Now verify that the HIGH and LOW channels
are also with in tolerance.
- [1] HIGH
This parameter is used to align Tx High power
(5W). From the "(0) Common Tx" section, press
[1] to activate this alignment section.
• Use the [] or [] key to select the
"MID (Ver. A)"
or "LOW (Ver. C)" frequency channel in the align-
ment range.
• Press the [space] key on the keyboard to acti-
vate the transmitter.
• Press the [] or [] key, as need, to set the
power output to 5 Watts, as indicated on the
external wattmeter.
• When the 5 Watt level is attained, press [EN-
TER] to lock in the new data.
- [2] L1
This parameter aligns the L1 power (0.25 W) lev-
el. From the "(0) Common Tx" section, press [2]
to activate this alignment section.
• Press the [space] key on the keyboard to acti-
vate the transmitter.
• Press the [] or [] key, as needed, to set the
power output to 0.25 W, as indicated on the ex-
ternal wattmeter.
• When the 0.25 W level is attained, press [EN-
TER] to lock in the new data.
- [3] L2
This parameter aligns the L2 power (1 W) level.
From the "(0) Common Tx" section, press [3] to
activate this alignment section.
• Press the [space] key on the keyboard to acti-
vate the transmitter.
• Press the [] or [] key, as needed, to set the
power output to 1 Watt, as indicated on the ex-
ternal wattmeter.
• When the 1 Watt level is attained, press [EN-
TER] to lock in the new data.
- [4] L3
This parameter aligns the L3 power (2.5 W) lev-
el. From the "(0) Common Tx" section, press [4]
to activate this alignment section.
• Press the [space] key on the keyboard to acti-
vate the transmitter.
• Press the [] or [] key, as needed, to set the
power output to 2.5 W, as indicated on the ex-
ternal wattmeter.
• When the 2.5 W level is attained, press [EN-
TER] to lock in the new data.
- [5] MAXIMUM DEVIATION
This section adjusts the transmitter’s voice devi-
ation level. From the “(0) Common Tx” section,
select [5] to enter this section.