Wintec LP-4502+ Instruction Manual

LP-4502+
User’s Manual
LP-4502+

Introduction
Thank you for purchasing Wintec LP-4502+. Wintec
LP-4502+ lets you talk to as many people you wish, as often
as you like, with no need for a license, subscription or tax
payment. It is very easy to use so even children can handle
it.
Please read through this manual carefully for many features
of this model.
Safety Information
Use only the supplied antenna. Unauthorized antennas,
modifications or attachments could damage the radio
and changes or modifications not expressly approved by
the party responsible for the compliance could void the
authority to operate the radio.
Avoid storing in high temperature or humid place for long
time.
If strange smell or smoke comes off the radio, dispatch it
to service center immediately.
Turn to lowest volume if external mic / speaker is used,
then adjust appropriately.
Never use other power sources for charging other than
the standard charger set designed for this radio model.
Take off battery pack if out of use for long time.
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This device has been tested and meets applicable limits for
Radio Frequency (RF) exposure. Specific Absorption Rate
(SAR) refers to the rate at which the body absorbs RF
energy. SAR limits are 1.6 Watts per kilogram (over a
volume containing a mass of 1 gram of tissue) in countries
that follow the United States FCC limit and 2.0 W/kg
(averaged over 10 grams of tissue) in countries that follow
the Council of the European Union limit. Tests for SAR are
conducted using standard operating positions with the
device transmitting at its highest certified power level in all
tested frequency bands. To reduce exposure to RF energy,
use a hands-free accessory or other similar option to keep
this device away from your head and body. Carry this device
at least 5 mm away from your body to ensure exposure
levels remain at or below the as-tested levels. Choose the
belt clips, holsters, or other similar body-worn accessories
which do not contain metallic components to support
operation in this manner. Cases with metal parts may
change the RF performance of the device, including its
compliance with RF exposure guidelines, in a manner that
has not been tested or certified, and use such accessories
should be avoided.

Features
Use of TCXO resonator to enhance freq. stability
(±1.5ppm).
Digitally designed to ensure stable quality.
Extra-small size with sturdy case, comply with US military
standards 810E.
7 tone calls & amateur’s MORSE code.
9 levels of VOX (voice-activate feature) with quick VOX
capability ON / OFF.
3 steps Auto-power save modes.
3 steps Auto-power-off.
5 steps Transmit Time-out-timer.
Channel scan feature.
Dual Watch Scan feature.
1 SOS channel and 1 Memory channel setting.
Tx / Rx Different Channel Mode.
BTL (Busy Tone Lockout) feature.
Scrambler feature supported.
51 / 83 group-codes (CTCSS / DCS) supported.
Multi-Icon Backlit LCD display.
PMR (Private Mobile Radio) Type support 16 channels.
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Contents
Radio Controls / Functions..............................................
Icons Guide....................................................................
Operation Guide.............................................................
Installing / Removing Battery Pack.................................
Battery Charging.............................................................
PMR Type Channel Frequency Table.............................
CTCSS Code Table........................................................
DCS Code Table.............................................................
Specifications.................................................................
1
2
3
12
13
14
14
15
16

1
1. LED indicator
2. External speaker jack
3. External microphone jack
4. Speaker area
5. Microphone
6. LCD screen
7. Up key
8. Power key
9. Function / LOCK key
10. Down key
11. CTCSS / DCS key
12. Channel / SOS key
13. Monitor / Back light key
14. PTT key(Push-To-Talk)
15. Antenna
Radio Controls / Functions
1
2
3
4
5
6
7
8
9
11
10
12
13
15
14

2
Icons Guide
:
Tone Call
Auto-Power Save
VOX
(Voice-activate system)
Keypad Tone
Volume
Auto-Power-Off
Transmit
Time-Out-Timer
Battery Power
CTCSS Number
DCS Number
Channel Number
Squelch Level
Keypad Lock
SOS (Emergency)
Channel
Scrambler
Scanning
Signal Strength
Indicator
Dual Watch Scanning
Memory Channel
Tx / Rx Different
Channel Mode
Function Settings

3
Operation Guide
Power ON / OFF
Hold about 1 sec to power radio. While power ON,
hold about 1.5 sec turn the power off.
Transmitting / Receiving
While holding [PTT], speak to the microphone area. LED
glows red during transmission. To receive, release [PTT].
LED glows green when receiving.
*Keep about 5~10 cm from microphone area when speaking
slowly and clearly.
Volume Adjustment
Momentarily press repeatedly on [▲] to adjust volume
louder. Momentarily press repeatedly on [▼] to adjust
volume lower. Press and hold [▲] or [▼] to swiftly adjust
volume. Do adjustment as you need.
*Caution: For external mic/ear user, adjust volume starting
from the lowest level.
Normal Channel Selection
Momentarily press [CH]. While channel number icon blinks,
temporarily press repeatedly on [▲] or [▼] to select
channel. To preset channel, temporarily press [CH], [CTS],
[SET] or [PTT].
Scan Channels
Momentarily press [CH]. While channel number icon blinks,
hold on [▲] or [▼] about 2 sec. to start scanning of channel.
Jumping of channel numbers increasingly or decreasingly
and the LCD show indicates scan in progress.
- Press [▲] or [▼] to change the channel scanning direction.
- When scanning and none of the signal is received,
pressing [SET] or [CH] will stop scanning and return to the
original channel.

4
- When the signal is received, pressing [SET] or [CH] will
stop scanning and stay in the current channel.
- When scanning and none of the signal is received,
pressing [PTT] will talk to the original channel, release [PTT]
will continue to scan after 5 sec.
- When the signal is received, pressing [PTT] will talk to the
current channel, and stop scanning and stay in the current
channel.
*VOX is invalid, when scan in progress.
*This operation is not allowed at the Memory channel / SOS
channel.
CTCSS / DCS Setting
1. Press [CTS] once to entry the CTCSS / DCS Sub-Tone
code setting mode.
2. In the CTCSS / DCS Sub-Tone code setting mode, the
LCD will show original Sub-Tone code (-- -- / Ctxx / dC xx),
then press [▲] or [▼] to select the new Sub-Tone code that
you wanted. After finished selecting, press [CTS], [PTT],
[SET] or [CH] once to jump out of the Sub-Tone code setting
mode and save your setting.
Sub-Tone code setting mode indication:
- OFF: If the current channel not setting CTCSS / DCS, the
LCD will show “-- --”.
- CTCSS: LCD will show Ct01~51, detailed like CTCSS
code table.
- DCS: LCD will show dC:01~83, detailed like DCS code
table.
*The Sub-Tone code for transmitting and receiving is the
same.

5
*Sub-Tone code indicates a small number icon to the right of
the channel number icon. When is displayed, there are
51 groups of CTCSS. When the display is , there are 83
groups of DCS.
*The Sub-Tone code setting operation is invalid at the
memory / SOS channel.
LCD Back Light ON / OFF
Temporarily press [○] (Monitor / Back light key) to turn back
light ON. Temporarily press [○] again to turn back light OFF
or it will automatically turn OFF the lighting after 10 sec.
Monitoring
Hold on [○] for about 1 sec. Static is heard if the channel is
clear or any voice on this channel can be heard regardless
of CTCSS or DCS settings. LED glows green.
Monitoring is used for the following purposes.
- To receive weak signals due to distance or for signal
intermittently received.
- To receive all signals on same channel even with different
CTCSS / DCS settings.
Keypad Lock / Unlock
Hold on [SET] for about 1.5 sec. until shows on the
screen to confirm keypad lock is enabled. To unlock keypad,
hold on [SET] again for about 1.5 sec. until clear from
the screen.
*When keypad lock is enabled, only PTT, LOCK, POWER,
Monitoring, LCD back light ON / OFF and Volume control
can be operated.
:

6
Function Settings
- Temporarily press [SET] to entry function menu mode.
- In the function menu mode, press [SET] to switch the
function menu items F1~F13, and then adjust the function
data with [▲] or [▼]. After the adjustment is completed,
short press [PTT] will leave the function menu mode and
save the changed function data.
F1 Tone Call
Under menu item 1, tone call off / b1 - b7 can be selected.
Factory default: b1
F2 Power Save Mode
Under menu item 2, power save modes off / 01-03 can be
selected. Choose 03 if talk time is short for best power
saving.
Factory default: 02
F3 VOX ON / OFF
Under menu item 3, VOX ON / OFF can be selected.
When the VOX function is on, if the transmission is triggered
by VOX, there will be a beep before transmission, and the
VOX icon will continue to blink during transmission,
indicating that the current transmission was triggered by
VOX.
Factory default: OFF
F4 VOX Sensitivity
Under menu item 4, VOX sensitivity levels 1-9 can be
selected. L9 is least sensitive.
In this menu item can be directly VOX voice sensitivity test,
please speak directly with a microphone, when the volume
is enough to trigger VOX, will be issued a beep and flash Tx
LED (Red) once, you can choose the appropriate VOX voice
sensitivity.
*If VOX is disabled in F3, this feature is invalid, F4 will hide
temporarily.

7
F5 Tx / Rx Different Channel Mode ON / OFF
Under menu item 5, Tx / Rx Different Channel mode
ON/OFF can be selected. While this mode is on, if receiving
is on any normal channel, the transmission channel will be
memory channel or the vice versa.
Factory default: OFF
F6 Keypad Tone ON / OFF
Under menu item 6, select ON / OFF to enable / disable the
beep sounds. When OFF is selected, the keypad tone / alert
sound and power ON / OFF sound will be turned off.
Factory default: ON
F7 Auto Power Off
Under menu item 7, choose OFF / 30 / 60 / 120 min.
depending on your need. If 30 is selected, the radio
automatically turns the power off if none of the keys are
operated or no signal received after 30 min.
Factory default: OFF
F8 Transmit Time Out Timer
Under menu item 8, choose OFF / 30 / 60 / 90 / 180 / 360
depending on your need. If 30 is selected, with icon
flash, the radio will stop transmission if continues talk
exceeds over 30 sec. and radio will automatically swift to
receiving mode. The continuous beep warning and the
icon flashing will continue until [PTT] is released.
Factory default: 90 sec.
F9 Squelch Setting
Under menu item 9, choose squelch level 0 to 7 depending
on your need. If the squelch level is at 0, the static sound is
heard all the time. If set at level 1, the radio is best to pick up
weak signal but susceptible to interferences. Squelch level 7
is the least sensitive and suited for use against high
interferences.

8
Factory default: Level 3
F10 Repeater ON / OFF
The function is not in use for PMR type.
*F10 does not appear on the PMR type device.
F11 End of Call Confirmation ON / OFF
Under menu item 11, when the function is on, each time the
Call is finished, the unit will send a tone to confirm the end
of the call.
Factory default: OFF
F12 Busy Tone Lockout (BTL) ON / OFF
Under menu item 12, BTL ON / OFF can be selected.
When the function is on, if the signal matching CTCSS /
DCS is receiving, TX is forbidden for fear of interrupting the
occupied busy channel. If you want to transmission (PTT /
Vox) at this time, the machine will issue a warning beep and
display "btL" on the LCD to remind the channel is busy.
Factory default: OFF
F13 Scrambler Setting
Under menu item 13, the radio sets off / 1-9 codes of
scrambler to measure a radio signal securely. It can only
understand by someone who has special group at the same
code. You can’t communicate clearly with different
scrambler code settings.
Factory default: OFF
Tone Call
Holding [PTT], temporarily press [CTS] to send tone call to
other receivers. (For selection of tone call, refer to F1.)

9
VOX ON / OFF
Holding [PTT], temporarily press [SET] to enable VOX. To
disable it, holding [PTT] and temporarily press [SET] again.
When VOX is enabled, the icon appears.
(For selection of VOX sensitivity, refer to F4.)
*While VOX is enabled, press of [PTT] is no longer required
during transmission. Just talk into the microphone area with
appropriate sound (depending on VOX sensitivity).
Tx / Rx Differrnt Channel Mode ON / OFF
Holding [PTT], temporarily press [CH] until LCD screen
shows to enable this feature. To disable it, holding [PTT]
and temporarily press [CH] again until disappears from
LCD screen.
*This feature is invalid in SOS channel.
Memory Channel
- Holding [CH], temporarily press [▼] to select memory
channel. The memory channel is marked with a .
- Holding [CH], temporarily [▲] to restore to the original
normal channel.
*For memory channel setting, refer to "Memory channel and
SOS channel setting."
Factory default: CH01 and CTCSS / DCS OFF.
SOS (Emergency) Channel
Hold [CH] for about 3 sec. to enable SOS channel until
shows on the screen. To disable SOS channel, hold [CH] for
about 3 sec. until disappears and then restore to the
original normal channel.
*For SOS channel setting, refer to "Memory channel and
SOS channel setting."
Factory default: CH01 and CTCSS / DCS OFF.

10
Dual Watch Scan
Momentarily press [CH]. While channel number icon blinks,
holding both [▲] and [▼] simultaneously to start this feature.
The LCD show and indicates Dual Watch Scan
in progress.
- In the dual watch scan, will be the normal channel and
memory channels alternate listen. Regardless whether of
the normal channel received signal or not, every 5 seconds,
the receipt will be temporarily switched to the memory
channel 0.2 seconds, check whether the signal is received
at the memory channel, if the signal is received at the
memory channel, will stay on the memory channel until no
signal is received exceed 5 seconds, the receipt will back to
the normal channel, or no signal is received at the memory
channel, the receipt will back to the normal channel
Immediately.
- When the signal is received at the memory channel,
pressing [PTT] will talk on the memory channel, otherwise
will talk on the normal channel, release [PTT] will be
continued to dual watch scan after 5 sec.
*In the dual watch scan, press [SET] / [CH] will stop the dual
watch scan and return to the normal channel.
*VOX is invalid, when Dual Watch Scan in progress

11
Memory Channel and SOS Channel Setting
1. Select favorite channel and CTSS / DCS.
2. Hold [CH] and [SET] until the LCD starts flashing
indicating that you have entered the Memory / SOS channel
setting mode, and you can release [CH] and [SET].
3. You can select the Memory channel ( flashing) or the
SOS channel ( flashing) by pressing [▲] or [▼] in the
Memory channel and SOS channel setting mode. After
selecting, press [SET] to set the Memory channel or SOS
channel, and exit setting mode.
4. In the Memory channel and SOS channel setting mode,
press [CH] or [PTT] or [CTS] briefly to exit the setting mode,
but not save any setting.
Low Battery Power Warning
1. When the battery level is low, the icon flashes, a beep
warning is issued every minute, and a beep warning is
issued at the beginning of the transmission.
2. When the battery is seriously low, the icon flashes, two
beeps per minute, and two beeps at the beginning of the
transmission.
3. When the battery is exhausted, the unit will shut down
automatically.
Restore to Factory Default Settings
1. Turn power OFF.
2. Hold [SET] and press until you hear 3 beep sounds
and then release all button.
3. The factory default settings will restore.

12
Installing / Removing Battery Pack
To Install
1. Place the battery pack into battery compartment as in illus
#1.
2. Push battery pack forward as in illus #2. It will lock into
compartment.
To Remove
1. Holding the radio in one hand, push down battery latch as
in illus #3.
2. Slide battery pack backwards as in illus #4.
#1
#3
#4
#2

13
Battery Charging
1. Power drop-in charger with standardAC / DC wall charger
#1.
2. Drop radio with installed battery into the charger slot #2.
#1
#2
LED Indication
Green LED: Standby Mode
Green Flash LED: Charge Complete
Red LED: Charging
Red Flash LED: Battery NG

14
PMR Type Channel Frequency Table
CTCSS Code Table
Channel Frequency(MHz) Channel Frequency(MHz)
1 446.00625 9 446.10625
2 446.01875 10 446.11875
3 446.03125 11 446.13125
4 446.04375 12 446.14375
5 446.05625 13 446.15625
6 446.06875 14 446.16875
7 446.08125 15 446.18125
8 446.09375 16 446.19375
1 67.0 11 97.4 21 136.5 31 192.8 41 165.5
2 71.9 12 100.0 22 141.3 32 203.5 42 171.3
3 74.4 13 103.5 23 146.2 33 210.7 43 177.3
4 77.0 14 107.2 24 151.4 34 218.1 44 183.5
5 79.7 15 110.9 25 156.7 35 225.7 45 189.9
6 82.5 16 114.8 26 162.2 36 233.6 46 196.6
7 85.4 17 118.8 27 167.9 37 241.8 47 199.5
8 88.5 18 123.0 28 173.8 38 250.3 48 206.5
9 91.5 19 127.3 29 179.9 39 69.4 49 229.1
10 94.8 20 131.8 30 186.2 40 159.8 50 254.1
51 62.5

15
DCS Code Table
1 023 19 131 37 261 55 431 73 654
2 025 20 132 38 263 56 432 74 662
3 026 21 134 39 265 57 445 75 664
4 031 22 143 40 271 58 464 76 703
5 032 23 152 41 306 59 465 77 712
6 043 24 155 42 311 60 466 78 723
7 047 25 156 43 315 61 503 79 731
8 051 26 162 44 331 62 506 80 732
9 054 27 165 45 343 63 516 81 734
10 065 28 172 46 346 64 532 82 743
11 071 29 174 47 351 65 546 83 754
12 072 30 205 48 364 66 565
13 073 31 223 49 365 67 606
14 074 32 226 50 371 68 612
15 114 33 243 51 411 69 624
16 115 34 244 52 412 70 627
17 116 35 245 53 413 71 631
18 125 36 251 54 423 72 632