Tekcom TM-882 VHF Marine Handheld Transceiver User Manual TM 882A U OM

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Date Submitted	2003-03-20 00:00:00
Date Available	2003-08-05 00:00:00
Creation Date	2002-06-14 19:30:37
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Document Lastmod	0000-00-00 00:00:00
Document Title	TM-882A_U_-OM.PDF
Document Creator	Microsoft Word
Document Author:	GUANXJ

OWNER’S MANUAL
TM-882A (American Version)
June 12, 2002
INTRODUCTION
Your marine transceiver TM-882 represents the state-of-the-art in high-tech engineering. Designed
for US and international operation, plus 10 weather channels. This allows you to transmit and
receive on all US and international channels in the VHF marine band, as assigned by the
international Union (ITU). This unit is a quality piece of electronic equipment, skillfully constructed
with the finest components. It is approved with commercial-grade standards to give you clear,
reliable communication.
Your transceiver is designed for many years of reliable, trouble-free performance. It is under
control of a microprocessor resulting in enhanced features and performance. The microprocessor
controls not only the marine band tuning but also dual watch, memory channels, weather monitor,
and a host of other useful features.
Your transceiver has the following features:
Emergency Channel 16 Switch ---- provides quick access to channel 16, the universal marine
emergency channel.
Weather Channel Selection ---- lets you select from 10 weather channels for alert signal.
PLL (Phase Lock Loop) Controlled Circuitry ---- Provides accurate and stable channel
selection.
Squelch Adjustment ---- help eliminate noise between transmissions.
Mode Switch ---- lets you quickly select weather channel mode, the US channel mode and
international channel mode.
Key Lock ---- lets you lock the keypad in order to prevent the controls from accidental pressing.
Call Button ---- lets you store a priority channel.
High/Low Power Selection ---- lets you save power by selecting a suitable transmitting power for
long or short distances.
Battery Low Indicator ---- shows the battery pack’s condition.
Supplied Battery Charger ---- lets you conveniently recharge your transceiver’s battery pack.
Speaker and Microphone Jacks ---- let you use an earphone or external speaker or microphone
to help ensure understandable communication in noisy areas.
Backlit LCD Display ---- allows you to operate the transceiver in dark environment.
10 Memory Channels ---- lets you store 10 channels as memory channels.
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Dual/Scan Button ---- lets you to select the reception of a programmed channel or scan all the
channels for existing channels.
We recommend you record your transceiver’s serial number here.
transceiver’s back panel.
This number is on the
Serial Number_______________________
SAFETY INFORMATION
Your hand-held marine VHF radio contains a low power transmitter. When the Push-To-Talk
(PTT) button is pushed it sends out radio frequency (RF) signals.
USING THE RADIO
A. DISPLAY
Your radio comes with a multifunctional backlight display. By pressing LOCK/LIGHT key, it will
illuminate the backlight for 5 seconds; once more press will turn off the light.
A.
Function is activated.
B.
“TRI”: appears when the radio is in Triple Watch mode.
C.
“SCAN”: appears when the radio is in Scan mode.
D.
“WX” indicates that your radio is receiving weather alert signal.
E.
“L” which means lockout appears to indicate the current channel you select is
overridden from scan.
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F.
“WA” shows on LCD that there is Weather Alert signal received.
G.
“MEMO” shows your radio being in memory function mode.
H.
Small 2-bit digits show the memory channel location number or “SL” for squelch.
I.
Battery icon: shows the battery is low.
J.
Key lock icon: appears when key lock function is enabled.
K.
“INT” shows the current channel is International channel.
L.
The current selected channel number or squelch level.
M.
“USA” shows the current channel is US channel.
N.
“LO” shows the radio in low power mode.
O.
“TX” appears if your radio is transmitting.
P.
“CALL” shows that you are using CALL channel.
Q.
When a signal is being received, your radio will have a “BUSY” appear on LCD.
R.
“DUAL” indicates your radio is in Dual Watch mode.
B. FUNCTION AND LOCATION OF THE CONTROLS
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D. BASIC OPERATION
Before operating your transceiver, you should make the following preparations. You should install
the battery pack on to the main unit and fully charge your 7.2VDC Ni-CD battery pack, then you
can use it after making sure to attach the antenna on your radio.
Turning On/Off Your Transceiver
Rotate VOLUME knob to turn the transceiver on or off with an indicating voice of click. And adjust
the volume to a comfortable level.
Illuminating the Display
When your radio is on, push LOCK/LIGHT key once to illuminate the display for 5 seconds. Once
more press will turn off the backlight.
Monitor
The monitor function allows faint signals on a channel to be heard. To activate the monitor function,
press and hold the MONI button to hear all traffic on the current channel. Release the MONI
button when finish listening.
Using Key Lock
You can lock your radio keypad to avoid accidental pressing of keys by activating the key lock.
Pressing and holding MONI button then press the LOCK/LIGHT key can enable or disable the key
lock. Key lock icon will appear on LCD if it is enabled. The function is effective to all other
knobs/keys except MONI, PTT, 16 and LIGHT/LOCK buttons.
Selecting High/Low Power
In order to extend the battery life, you can also press HI/LO/BAND key while holding MONI button
to select the low power for your transceiver. If you want to send or hear long distance or weaker
signals, press the key combination again to select the high power. High power is 5.0 watts, and
low power is 1.0 watt. When the unit is operating at low power, “LO” appears on LCD and
disappears when operating at high power.
Selecting a Band
Three bands are available on the TM-882 – USA, International and Weather. The USA band are
frequencies for use in US boundaries. The International band are frequencies for use outside US
boundaries. The Weather band monitors weather broadcasts. To switch between bands, press the
HI/LO/BAND key until the desired band is reached. The band in use is indicated on the LCD by
USA, INT or WX.
Selecting a Channel
Select the appropriate band – USA, International or Weather. Once the band is selected, press the
CHL/SQL (UP/DOWN) button to scroll through the available channels.
Note: Not all channel numbers are available in all bands.
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Transmitting and Receiving
The PTT (Push-To-Talk) button is located on the side of the TM-882. Before transmitting, make
sure the channel is not a “receive-only” channel. To transmit a message, press and hold the PTT
button. Talk clearly into the speaker/microphone area of the radio. When finished, release the PTT
button. During a transmission, “TX” appears on the LCD. To receive a call, just release the PTT
button.
Adjusting Squelch
Squelch is used to eliminate static and background noise and allows for silent operation of the
TM-882 until a transmission is received. If the squelch is too high, only the strongest transmissions
are
heard, and when too low, intermittent static and noise are heard.
To adjust the squelch, press and hold the MONI button then press either the UP or DOWN for
CHL/SQL key until the background noise is quiet. The LCD displays the squelch setting from 00 to
08.
Channel 16
Channel 16 is the standard channel for placing a call or for an emergency broadcast. The 16
button selects Channel 16 immediately. To exit, press the 16 button again. Channel 16 is the same
frequency on both the USA and International bands.
Transmitting a Help Message on Channel 16
Press and hold the 16 key for several seconds. This starts the transmission of the emergency Help
signal. The Help code can be heard through the speaker. When in the emergency mode, “EMERG
(emergency)” appears on the LCD.
While the TM-882 is transmitting the Help message, it listens for anyone trying to respond and
interrupts transmission when a response is received.
During a Help transmission, no other transmission is possible. If a transmission is necessary, stop
the Help transmission by pressing the 16 button.
Programming the Call Channel
1. Press the CALL button. “CALL” appears on the LCD.
2.
Press and hold the MONI button then press the CALL button. The display will flash. Release
all buttons.
3.
Press UP or DOWN key to get the desired call channel.
4.
Press and hold the MONI button then press the CALL button to store the Call Channel.
Note: The default value for CALL channel is 09.
Resetting the Radio
Provided that your radio can not work properly any longer, you can make it return to the original
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status by resetting. Turn on your radio while pressing and holding down MEMO/M.PRG or
LIGHT/LOCK key, the current channel for USA, INT and WX are all CH1, the CALL channel is
USA CH09, squelch level is 02, the default band is INT band, etc.
Charging and Attaching Your Battery Pack
The design of the battery pack let you can charge it either when it is attached on the radio or being
detached. You should use the supplied specialized charger to charge it for 14~15hrs. Before
attaching the pack, you should detach the belt clip first, then aligningly place the pack on the unit
and secure it using the supplied screw.
Using the Belt Clip
The supplied belt clip lets you easily attach the transceiver to your belt. To attach the belt clip, put
it onto the back of your transceiver aligning the fitting groove and use a standard PHILIP screw
driver to secure.
E. SCANNING FEATURES
Scanning All Channels
The TM-882 scans all channels in one of two modes: normal or priority scan. You may program
the TM-882 to scan in either mode.
In normal scanning, the radio rapidly scans through channels, either in the USA or International
band. It stops scanning on busy channels and remains stopped several seconds after the signal
disappears allowing time to answer the call if necessary.
In priority scanning, the scanning operation is the same as normal scanning except Channel 16 is
constantly checked for activity, allowing for much quicker response to Channel 16 traffic.
To scan channels, press and hold the SCAN/DUAL button for a few seconds. The TM-882 begins
scanning channels using the scan method programmed in the radio. The word “SCAN” appears on
the LCD. To stop scanning, press the SCAN/DUAL button, your radio will stop on the current
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arrived channel.
Programming for Normal or Priority Scan
1.
Turn the unit off. Press and hold the MONI button while turning the power on until there are
characters appear on LCD. The unit displays “02” or “03”. Release the MONI button.
2.
Press the MONI button again. The radio displays “n-sc” or “P-sc”.
3.
Press UP or DOWN key to choose “n-sc” for normal scan, or “P-sc” for priority scan.
4.
Press the 16 key once to store programming.
Deleting Channels from Scan
To delete a channel from scan, select the channel to be deleted. Press the MONI and
SCAN/DUAL button keys at the same time. “L” appears on the LCD, indicating the channel is
locked out of scan. This is useful for bypassing channels that are continuously busy. To activate a
skipped channel, select the channel to be activated then press the MONI and SCAN/DUAL keys
at the same time.
Dual and Triple Watch Scanning
To scan selected channels, there are three options: Dual Watch, Dual Watch with Weather Alert,
and Triple Watch.
In Dual Watch scanning, your radio toggles between Channel 16 and the current channel. In Dual
Watch with Weather Alert scanning, the TM-882 toggles between Channel 16, the current weather
channel, and the current VHF channel. In Triple Watch scanning, it toggles between Channel 16,
the Call Channel, and the current channel.
Programming for Dual, Dual with Weather, or Triple Watch Scanning
1.
Turn the unit off. Press the MONI button while turning the power on until there are characters
appear on LCD. Release the MONI button.
2.
Press the UP or DOWN key until “02du” (for Dual Watch), “03du” (for Dual Watch with
Weather Alert), or “03tr” (for Triple Watch) appears on the LCD.
3.
Press the 16 key or turn off the radio to store programming.
To scan channels, press the SCAN/DUAL key. The radio begins scanning channels using the
scan method programmed in the radio. The characters “DUAL” or “TRI” appears on the LCD.
The TM-882 rapidly scans through channels, and stops scanning on busy channels. The radio
remains stopped several seconds after the signal disappears allowing time to answer the call if
necessary.
In Dual Watch scanning, the radio constantly monitors Channel 16 for an alert signal.
In Dual Watch with Weather Alert and Triple Watch scanning, the radio constantly monitors the
selected weather channel and Channel 16 for an alert signal.
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Press the SCAN/DUAL button again to exit.
F. MEMORY CHANNELS
Using Memory Channels
The radio has 10 memory locations (00-09), to quickly access frequently used channels.
To access the memory channels, press the MEMO/M.PRG button. The LCD displays the channel
number on the left, and the memory location in smaller numbers to the right. Turn the CHL/SQL
knob to select a memory channel. To exit the memory channel mode, press the MEMO/M.PRG
button again.
Programming Memory Channels
To enter channels into memory:
1.
Press the MEMO/M.PRG button.
2.
Press and hold the MONI button then press the MEMO/M.PRG button. The memory location
number begins to flash.
3.
Press the UP or DOWN key to get the desired memory location.
4.
Press the MEMO/M.PRG button. The channel number begins to flash.
5.
Press the HI/LO/BAND key to select either the USA, Weather, or International band for the
channel you wish to store.
6.
Press the UP or DOWN key to reach the desired channel for this memory location.
7.
Press and hold the MONI button then press the MEMO/M.PRG button to save the memory
location and exit programming.
8.
To store additional memory channels, repeat the above procedure.
Press the MEMO/M.PRG button to exit the memory channel mode.
Scanning Memory Channels
To scan the memory channels, press the MEMO/M.PRG button, then press and hold the
SCAN/DUAL key for a few seconds. “SCAN” appears on the LCD as the radio scans the memory
channels, stopping on an active channel. Press the SCAN/DUAL key again to exit.
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TECHNICAL SPECIFICATIONS
Channels………………………..…All USA and International Channels, Plus Ten Weather Channels
Frequency Method…………………………………………………………….………….Phase Lock
Frequency Range……………………………………………………………..TX 156.050~157.425 MHz
RX 156.050~163.275 MHz
Antenna Impedance………………………………………………………………………………....50
Power Supply………………………………………………………………………………...………7.2VDC
Operating Temperature………………………………………………………………….....-20
to +50
Dimensions (HWD)………………………………………………………………...…….112 62 39 mm
Weight (with Batteries)………………………………………………………………………..…….....300 g
TRANSMITTER
Power Output……………………………………………….…………0.6 or 2 Watts (Switch Selectable)
Modulation Type…………………………………………………………………………….…………….FM
Hum and Noise Attenuation……………………………………………………………………………34dB
Audio Distortion..................................................………….………………...…...........…...................5%
Spurious Suppression.................................................………….………………...….....….............60dB
RECEIVER
Sensitivity at 12dB Sinad............................................…….....………………...…………...….......0.5µV
S/N Ratio (20dB)....................................…….....………………...………………………………….0.8µV
Squelch Sensitivity....................…….....………………...…………...….......Threshold –12dBµV(EMF)
Adjacent Channel Rejection..........….......................………………..........…..........……..……….. 70dB
Audio Power Output………………………………….…………………………….…200mW at 10%
Spurious Response Attenuation………………………………………….…………………...………70dB
Hum and Noise Attenuation……………………………………………………………………………40dB
Modulation Acceptance Bandwidth…………………………………………………+/- 7.0KHz Minimum
Note: The data are typical, and the practical ones may be varied.
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FREQUENCY CHARTS
US
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
37
39
60
61
62
63
64
65
66
Unit: MHz
INT
TX
156.050
RX
156.050
156.150
156.150
156.250
156.300
156.350
156.400
156.450
156.500
156.550
156.600
156.650
156.700
156.800
156.850
156.900
156.950
157.000
157.050
157.100
157.150
157.200
157.250
157.300
157.350
157.400
156.250
156.300
156.350
156.400
156.450
156.500
156.550
156.600
156.650
156.700
156.750
156.800
156.850
156.900
156.950
161.600
157.050
157.100
157.150
161.800
161.850
161.900
161.950
162.000
156.075
156.075
156.175
156.225
156.275
156.325
156.175
160.825
156.275
156.325
TX
156.050
156.100
156.150
156.200
156.250
156.300
156.350
156.400
156.450
156.500
156.550
156.600
156.650
156.700
156.750
156.800
156.850
156.900
156.950
157.000
157.050
157.100
157.150
157.200
157.250
157.300
157.350
157.400
157.850
157.950
156.025
156.075
156.125
156.175
156.225
156.275
156.325
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RX
160.650
160.700
160.750
160.800
160.850
156.300
160.950
156.400
156.450
156.500
156.550
156.600
156.650
156.700
156.750
156.800
156.850
161.500
161.550
161.600
161.650
161.700
161.750
161.800
161.850
161.900
161.950
162.000
157.850
157.950
160.625
160.675
160.725
160.775
160.825
160.875
160.925
67
68
69
70
71
72
73
74
77
78
79
80
81
82
83
84
85
86
87
88
156.375
156.425
156.475
156.375
156.425
156.475
156.375
156.425
156.475
156.375
156.425
156.475
156.575
156.625
156.675
156.725
156.875
156.925
156.975
157.025
157.075
157.125
157.175
157.225
157.275
157.325
157.375
157.425
156.575
156.625
156.675
156.725
156.875
156.925
156.975
157.025
157.075
157.125
157.175
161.825
161.875
161.925
161.975
157.425
156.575
156.625
156.675
156.725
156.875
156.925
156.975
157.025
157.075
157.125
157.175
157.225
157.275
157.325
157.375
157.425
156.575
156.625
156.675
156.725
156.875
161.525
161.575
161.625
161.675
161.725
161.775
161.825
161.875
161.925
161.975
162.025
Weather Channel Frequencies
US
International
RX (MHz)
RX (MHz)
WX0
163.275
163.275
WX1
162.550
162.550
WX2
162.400
162.400
WX3
162.475
162.475
WX4
162.425
162.425
WX5
162.450
162.450
WX6
162.500
162.500
WX7
162.525
162.525
WX8
161.650
161.650
WX9
161.775
161.775
Channel No.
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