19-1004.fm Page 1 Tuesday, August 3, 1999 9:11 AM
Cat. No. 19-1004
OWNER’S MANUAL
Please read before using this equipment.
MTX-103
VHF Marine Transceiver
19-1004.fm Page 3 Tuesday, August 3, 1999 9:11 AM
The Marine Radiotelephone Service is
under the jurisdiction of the Federal
Communications Commission (FCC).
Any adjustments or alterations which
would alter the performance of the
transceiver’s original FCC type accep-
tance or would change the frequency
determining method are strictly prohib-
ited.
CAUTION
RISK OF ELECTRIC SHOCK.
!
DO NOT OPEN.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVIC-
ING TO QUALIFIED PERSONNEL.
Warning: To prevent fire or shock haz-
ard, do not expose this product to rain
or moisture.
Replacement or substitution of crys-
tals, transistors, ICs, regulator diodes
or any other part of a unique nature,
with parts other than those recom-
mended by Radio Shack, may cause
violation of the technical regulation of
the FCC Rules or violation of type ac-
ceptance requirements of the rules.
This symbol is intended to alert you
to the presence of uninsulated dan-
gerous voltage within the product’s
enclosure that might be of sufficient
magnitude to constitute a risk of
electric shock. Do not open the
product’s case.
Before operating the radiotelephone,
you must obtain your license. It is ille-
gal to transmit without the appropriate
license which can be obtained by sub-
mitting a completed FCC Form 506 (in-
cluded) to the FCC. Furthermore, you
are required to understand Part 80 of
the FCC Rules and Regulations prior
to the operation of your radiotele-
phone. It is the user’s responsibility to
see that this unit is operating at all
times in accordance with the FCC
Rules and Regulations.
This symbol is intended to inform
you that important operating and
maintenance instructions are in-
cluded in the literature accompany-
ing this product.
!
FCC LICENSE
REQUIRED
The Federal Communications Com-
mission (FCC) requires you to have a
license before you operate this trans-
ceiver. You must complete and submit
FCC Form 506 — a copy of Form 506
is enclosed. Furthermore, you are re-
quired to understand Part 80 of FCC
Rules and Regulations.
FCC Form 506-A, Temporary Operat-
ing Authority, Ship Radio Station, is
also included with your transceiver.
Complete and post this temporary per-
mit in accordance with the instructions.
3
19-1004.fm Page 4 Tuesday, August 3, 1999 9:11 AM
TABLE OF CONTENTS
Preparation ........................................................................................................... 5
Charging the Battery Pack ............................................................................... 5
Connecting the Antenna .................................................................................. 6
Using an Earphone .......................................................................................... 7
Using an External Speaker/Microphone .......................................................... 7
Using the Wrist Strap ....................................................................................... 7
Using the Belt Clip ........................................................................................... 7
Operation .............................................................................................................. 8
Receiving ......................................................................................................... 8
Transmitting ................................................................................................... 10
Calling Another Boat ............................................................................... 10
Making a Ship-to-Shore Call ................................................................... 11
Making an Emergency Call ..................................................................... 12
Channel Assignments ....................................................................................... 13
Installed Channels and Frequencies ............................................................. 14
USA VHF Marine Channels .................................................................... 14
International VHF Marine Channels ........................................................ 15
Comprehensive VHF FM Marine Radiotelephone Channels .................. 16
Care and Maintenance ....................................................................................... 18
If You Have Problems .................................................................................... 19
FCC Notice .....................................................................................................19
Specifications ..................................................................................................... 20
4
19-1004.fm Page 5 Tuesday, August 3, 1999 9:11 AM
PREPARATION
Follow these steps to charge the bat-
tery pack.
CHARGING THE
BATTERY PACK
Caution: Do not use the transceiver
while the charger is connected.
The MTX-103 operates on a built-in re-
chargeable battery pack (supplied).
You must charge the battery pack with
the supplied battery charger before
you use it the first time and when BAT
lights steadily.
1. If the battery pack is attached to
the transceiver, make sure VOL-
UME is turned fully counterclock-
wise so the transceiver is off.
You can charge the battery pack while
it is detached from or while it is at-
tached to the transceiver.
To attach the battery pack, slide it onto
the transceiver until the latch clicks.
2. Pull out the CHG PWR jack plug on
the bottom of the battery pack.
Plug the charger’s barrel plug into
the CHG PWR jack, then connect
the charger to a standard AC out-
let.
Note: Charging time is 14 to 16 hours.
To remove the battery pack, push the
battery pack latch in the direction of the
arrow, then slide the battery pack off
the transceiver.
5
19-1004.fm Page 6 Tuesday, August 3, 1999 9:11 AM
Cautions:
• To prevent permanent battery
power loss, never charge the bat-
teries in an area where the tem-
perature is above about 80°F. The
charger does not operate at all at
temperatures below 32°F or
above 113°F.
1. Position the BNC antenna con-
nector over the antenna jack on
the top of the transceiver.
• Never use any other charger to
recharge the transceiver’s battery
pack. This could permanently
damage your transceiver or the
battery pack.
2. Place the slots in the antenna’s
connector over the tabs on the
antenna jack, squeeze the base of
the antenna, and push down and
turn the antenna’s base clockwise
until it locks into place.
Important: This transceiver uses a re-
chargeable nickel-cadmium battery
pack. At the end of the battery pack’s
useful life, it must be recycled or dis-
posed of properly. Contact your local,
county, or state hazardous waste man-
agement authorities for information on
recycling or disposal programs in your
area. Some options that might be
available are municipal curb-side col-
lection, drop-off boxes at retailers, re-
cycling collection centers, and mail-
back programs.
Instead of the supplied antenna, you
can connect an optional antenna. The
BNC antenna jack on your transceiver
makes it easy to connect a variety of
antennas, such as an external mobile
antenna or an outdoor base antenna,
available at your local Radio Shack
store.
Caution: Never connect an antenna
that is not specifically tuned for the
transceiver’s
frequency
range
(156.025–162.275 MHz).
CONNECTING THE
ANTENNA
Warning: Use extreme caution when
installing or removing a base station
antenna. If it starts to fall, let it go! It
could contact overhead power lines. If
the antenna touches the power line,
contact with the antenna, mast, cable,
or guy wires can cause electrocution
and death! Call the power company to
remove the antenna. Do not attempt to
do so yourself.
Caution: To prevent damage to your
transceiver, you must connect an an-
tenna before you operate it.
6
19-1004.fm Page 7 Tuesday, August 3, 1999 9:11 AM
USING AN EARPHONE
USING THE WRIST
STRAP
To listen privately or to hear better in a
noisy area, remove the plug from the
Clip the supplied wrist strap to the wrist
strap tab, as shown. Then simply slip
the strap over your hand.
SPK
jack on the right of the transceiver
and plug a monaural earphone (such
as Cat. No. 33-175) into the jack. This
automatically disconnects the internal
speaker.
USING THE BELT CLIP
USING AN EXTERNAL
SPEAKER/MICROPHONE
You can use the supplied belt clip to
make the transceiver easier to use
when you are on the go. Use the two
supplied screws to attach the belt clip
to the transceiver. Slide the belt clip
over your belt or waistband.
An external speaker/microphone (such
as Cat. No. 19-310) can make it easier
to use the transceiver when you clip it
to your belt. Remove the plugs from
MIC
SPK
jacks. Then plug the
the
and
speaker/microphone’s connector into
the jacks. This automatically discon-
nects the internal speaker.
7
19-1004.fm Page 8 Tuesday, August 3, 1999 9:11 AM
OPERATION
5. Use the channel thumbwheels to
select the desired channel. The
left wheel selects the first digit of
the channel number; the right
wheel selects the second digit.
RECEIVING
1. Turn SQUELCH fully counterclock-
wise.
2. Turn on the radio by turning VOL-
UME clockwise. Adjust VOLUME to
the desired listening level.
6. Set 1W/5W to select the desired
output power.
• Use 1W for normal communica-
3. Adjust SQUELCH to eliminate
background noise between trans-
missions. Wait until there is no
signal on the channel, then slowly
turn SQUELCH clockwise until the
background noise stops.
tion.
• Use 5W for emergency or long
distance communication.
Note: In a marina or harbor, try to
establish communications using
the 1-watt setting before switching
to the 5-watt setting.
4. Raise the protective cover.
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19-1004.fm Page 9 Tuesday, August 3, 1999 9:11 AM
7. The USA/INT’L switch must be set
to USA if you are in United States
waters. If you are outside the
USA, set the switch to INT’L.
Although the channel numbers
are the same, the frequencies are
different for USA and international
channels. See “Channel Assign-
ments.”
using the channel thumb-
wheels. See “Channel Assign-
ments” for the receive-only
weather channels.
9. To turn off the radio, turn VOLUME
counterclockwise until it clicks.
To get the best communication
Note:
range:
• Orient the antenna vertically.
• Move the transceiver away from
shielding caused by nearby struc-
tures.
• Raise the transceiver as high as
possible above the surrounding
terrain.
8. Set the NORM/CH16/WX switch for
• Try an external antenna.
the desired channel.
Cautions:
• Receiving excessively strong sig-
nals might damage the trans-
ceiver. Do not use the transceiver
close to a base station antenna or
within 20 inches of another unit.
• Transmission without an antenna
connected might cause damage
to the transmitter.
• Use NORM to go to the channel
selected by the channel thumb-
wheels.
• If the MTX-103 is accidentally
subjected to water spray, immedi-
ately wipe it with a soft cloth. If the
unit is contaminated with salt
water, wipe it with a soft cloth
moistened with fresh water. Then
dry the radio.
• Use CH16 to quickly select
Channel 16 in an emergency,
regardless of the channel
thumbwheel setting.
• Use WX to monitor the available
24-hour weather channels.
Select the desired channel
9
19-1004.fm Page 10 Tuesday, August 3, 1999 9:11 AM
• After making contact on Channel
16, switch to a different channel to
continue the call — Channel 16
must be left open for other calls.
See “Channel Assignments.”
TRANSMITTING
When making a call using a marine
transceiver, you must follow these call-
ing procedures.
• Channel 16 is the universal calling
and safety channel. Leave the
radio set to Channel 16, unless a
call is in progress on a different
channel.
Calling Another Boat
1. Turn on the radio, and select
Channel 16.
• Listen to Channel 16 for at least 2
minutes before making a call on it
(to be sure the channel is not
already in use).
2. Hold the transceiver about
3
inches from your mouth, and
press the push-to-talk button.
• Press the push-to-talk button to
talk; the TX indicator should light.
Release it to listen; the RX indica-
tor should light when a transmis-
sion is received.
• When you are ready for the other
party to talk, end your sentence by
saying “over.”
3. Say “(Name of boat you are call-
ing), this is (your call sign or name
of your boat).”
• When you are ready to end com-
munication, say “(Your call sign or
name of your boat), out.”
4. Release the push-to-talk button
and listen for a response.
• When in a marina or harbor, try
1W
first to make calls using the
(1-
5. After establishing communication,
switch to a ship-to-ship channel.
See “Channel Assignments.”
watt) power setting. If you do not
receive a response, switch to the
5W
(5-watt) setting.
6. When the call is complete, say
“(Your call sign or name of your
boat), out.”
• If you do not receive a response
to a call after 30 seconds, wait at
least 2 minutes before trying
again. If you receive no response
after the second try, wait at least
15 minutes before trying again.
7. Switch back to Channel 16.
10
19-1004.fm Page 11 Tuesday, August 3, 1999 9:11 AM
4. Say, “Mayday-Mayday-Mayday!
This is (your call sign and name of
your boat), (your call sign and
name of your boat), (your call sign
and name of your boat), Mayday
(name of your boat).”
Making an Emergency Call
Emergency calls are made on Channel
16 because it is monitored by marine
radio owners. In many areas, the
Coast Guard monitors Channel 16 24-
hours a day.
5. Then give the following informa-
tion:
There are three levels of emergency
calls:
• Your location, including any
navigational aids or landmarks
• The Mayday distress signal is for
the most severe situations and is
used when there is grave and
imminent danger to people and/or
a vessel. Mayday has priority over
all other calls.
• The nature of your emergency
• The number of people on the
boat and the condition of any
injured
• The estimated seaworthiness of
your boat
• The Pan-Pan urgency signal is the
second level of emergency and is
used when people or vessels are
in jeopardy.
• A brief description of your boat
length, type, color, and so forth
• The Security safety signal is the
third level of emergency and is
used for messages about the
safety of navigation or important
weather warnings.
6. To end the message, say “I will be
listening on Channel 16. This is
(your call sign or name of your
boat). Over.”
7. Release the push-to-talk button
and listen.
Follow these steps to make a distress
call.
8. Someone should answer. If not,
repeat the call beginning with
Step 3.
1. Turn on the radio, and select
Channel 16.
2. Set the output power to 5W (5
Use this same basic procedure for
transmitting urgent and safety signals,
substituting Pan-Pan and Security in
place of Mayday, and providing appro-
priate information.
watts).
3. Hold the transceiver about 3
inches from your mouth, and
press the push-to-talk button.
11
19-1004.fm Page 12 Tuesday, August 3, 1999 9:11 AM
CHANNEL ASSIGNMENTS
Each of the 78 two-way communication
channels and 18 receive-only channels
is reserved for a specific type of trans-
mission. Misuse of a channel is a viola-
tion of FCC regulations.
Also, be sure to observe the ship-to-
ship and ship-to-shore assignments of
the channels.
The USA and international marine
channels share the same channel num-
bers. They do not, however, always use
the same frequencies. Also, many of
the international channels use different
frequencies for transmitting and receiv-
ing on a particular channel. Be sure that
you set the USA/INT’L switch to the ap-
propriate position.
You can listen to any channel. But, with
the Ship Radio Station License that you
receive by filling out FCC Form 506, you
can only transmit on Channel 16 and
channels marked in the list that follows
as “Non-Commercial” or “Public Corre-
spondence (Public Corresp).”
12
19-1004.fm Page 13 Tuesday, August 3, 1999 9:11 AM
IINSTALLED CHANNELS AND FREQUENCIES
USA VHF Marine Channels
Frequency (MHz)
Frequency (MHz)
Channel
Channel
TX
RX
TX
RX
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
60
61
62
63
64
65
66
67
156.050
–
156.050
160.700
160.750
160.800
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
158.900
156.950
161.600
157.050
157.100
157.150
161.800
161.850
161.900
161.950
162.000
160.625
160.675
160.725
156.175
160.825
156.275
156.325
156.375
68
69
70
71
72
73
74
77
78
79
80
81
82
83
84
85
86
87
88
156.425
156.475
156.525
156.575
156.625
156.675
156.725
156.875
156.925
156.975
157.025
157.075
157.125
157.175
157.225
156.275
157.325
157.375
157.425
156.425
156.475
156.525
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
–
–
156.250
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
–
–
–
156.175
–
156.275
156.325
156.375
13
19-1004.fm Page 14 Tuesday, August 3, 1999 9:11 AM
International VHF Marine Channels
Frequency (MHz)
Channel
Frequency (MHz)
Channel
TX
RX
TX
RX
01
02
03
04
05
06
07
08
09
10
11
12
15
16
17
18
19
20
21
22
23
24
25
26
27
26
27
28
60
61
62
63
64
65
66
67
156.050
156.100
156.150
156.200
156.250
156.300
156.350
156.400
156.450
156.500
156.550
156.600
156.750
156.800
156.850
156.900
156.950
157.000
157.050
157.100
157.150
157.200
157.250
157.300
157.250
157.300
157.350
157.400
156.025
156.015
156.125
156.175
156.225
156.275
156.325
156.375
156.650
160.700
160.750
160.800
160.850
156.300
160.950
156.400
156.450
156.500
156.550
156.600
156.750
156.800
156.850
161.500
161.550
161.600
161.650
157.100
157.150
161.800
161.850
161.900
161.850
161.900
161.950
162.000
160.625
160.675
160.725
160.775
160.825
160.875
160.925
156.375
68
69
70
71
72
73
74
77
78
79
80
81
82
83
84
85
86
87
88
90
91
95
96
97
156.425
156.475
156.525
156.575
156.625
156.675
156.725
156.875
156.925
156.975
157.025
157.075
157.125
157.175
157.225
156.275
157.325
157.375
157.425
157.850
161.425
158.250
158.450
158.550
156.425
156.475
156.525
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
152.025
157.850
161.425
158.250
158.450
158.550
14
19-1004.fm Page 15 Tuesday, August 3, 1999 9:11 AM
Comprehensive VHF FM Marine Radiotelephone Channels
Operating
Channel
Designations
Frequency (MHz)
Type Traffic
Ship/Ship
Ship/Shore
Ship TX
Coast RX
1
2
156.050
157.100
157.150
156.200
156.250
156.300
156.350
156.350
156.400
156.450
156.450
156.500
156.550
156.600
156.650
156.700
156.750
156.800
156.850
156.900
156.900
156.950
156.950
157.000
157.050
157.050
157.100
157.100
157.150
157.150
157.200
157.250
157.300
157.350
157.400
–
160.650
160.700
161.750
160.800
160.850
–
International Only
International Only
International Only
International Only
International Only
Safety
–
–
Yes
Yes
3
–
Yes
4
–
Yes
5
6
–
Yes
–
Yes
No
7
160.950
156.350
–
International Only
Commercial
Yes
7A
8
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
RX Only
Yes
No
Yes
Commercial
No
9
156.450
156.450
156.500
156.550
156.600
156.650
156.700
156.750
156.800
156.850
161.500
156.900
161.550
156.950
161.600
161.650
157.050
161.700
157.100
161.750
157.150
161.800
161.850
161.900
161.950
162.000
162.550
162.475
161.650
162.425
162.500
Commercial
Yes
9
10
Non-Commercial
Commercial
Yes
Yes
11
Commercial
Yes
12
Port Ops, USCG
Locks, Canals,Pilots
Port Ops, USCG
Environmental
Distress Calling
State Control
International Only
Commercial
Yes
13
Yes
14
No
15
16
RX Only
Distress
Yes
17
18
Yes
Yes
Yes
Yes
No
Yes
18A
19
Yes
International Only
Commercial
Yes
19A
20
Yes
Yes
Port Ops
21
International Only
USCG Restricted
International Only
USCG Restricted
International Only
USCG Restricted
Public Corresp
Public Corresp
Public Corresp
Public Corresp
Public Corresp
Weather
–
Yes
21CG
22
Yes
–
Yes
Yes
22CG
23
23CG
24
Yes
–
Yes
No
Yes
Yes
Yes
Yes
25
No
Yes
26
No
Yes
27
No
Yes
28
No
Yes
WE1
WE3
WE5
WE7
WE9
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
–
Weather
–
Weather
–
Weather
–
Weather
15
19-1004.fm Page 16 Tuesday, August 3, 1999 9:11 AM
Operating
Channel
Designations
Frequency (MHz)
Ship TX Coast RX
Type Traffic
Ship/Ship
Ship/Shore
60
61
62
63
64
65
65A
66
66A
67
68
69
70
71
72
73
74
77
78
78A
79
79A
80
80A
81
82
83CG
84
85
86
87
156.025
156.075
156.125
156.175
156.225
156.275
156.275
156.325
156.325
156.375
156.425
156.475
156.525
156.575
156.625
156.675
156.725
155.875
156.925
156.925
156.975
156.975
157.025
157.025
157.075
157.125
157.175
157.225
157.275
157.325
157.375
157.425
151.425
–
160.625
160.675
160.725
160.775
160.825
160.875
156.275
160.925
156.325
–
156.425
156.475
–
156.575
–
International Only
International Only
International Only
International Only
International Only
International Only
Port Ops
RX Only
RX Only
RX Only
RX Only
RX Only
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
–
–
Yes
No
No
No
No
Yes
Yes
RX Only
RX Only
RX Only
RX Only
RX Only
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
International Only
Port Ops
Commercial
Non-Commercial
Non-Commercial
Non-Commercial
Non-Commercial
Non-Commercial
Port Ops
156.675
156.725
–
Port Ops
Commercial
161.525
156.925
161.575
156.975
161.625
157.025
161.675
161.725
157.175
161.825
161.875
161.325
161.975
162.025
–
International Only
Non Commercial
International Only
Commercial
International Only
Commercial
International Only
International Only
USCG Auxiliary Only
Public Corresp
Public Corresp
Public Corresp
Public Corresp
International Only
Commercial
88
88A
WE2
WE4
WE6
WE8
WE10
162.400
162.275
161.775
162.450
162.525
Weather
Weather
Weather
Weather
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
RX Only
–
–
–
–
Weather
16
19-1004.fm Page 17 Tuesday, August 3, 1999 9:11 AM
CARE AND MAINTENANCE
Your Radio Shack MTX-103 VHF Marine Transceiver is an example of superior de-
sign and craftsmanship. The following suggestions will help you care for the trans-
ceiver so you can enjoy it for years.
Keep the transceiver dry. If it gets wet, wipe it dry immediately. Liq-
uids might contain minerals that can corrode the electronic circuits.
Handle the transceiver gently and carefully. Dropping it can damage
circuit boards and cases and can cause the transceiver to work im-
properly.
Use and store the transceiver only in normal temperature environ-
ments. Temperature extremes can shorten the life of electronic de-
vices, damage batteries, and distort or melt plastic parts.
Keep the transceiver away from dust and dirt, which can cause pre-
mature wear of parts.
Wipe the transceiver with a damp cloth occasionally to keep it looking
CLEANER
new. Do not use harsh chemicals, cleaning solvents, or strong deter-
gents to clean the transceiver.
Modifying or tampering with the transceiver’s internal components can cause a mal-
function and might invalidate your transceiver’s warranty. If your transceiver is not
performing as it should, take it to your local Radio Shack store for assistance.
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IF YOU HAVE
PROBLEMS
FCC NOTICE
This device complies with Part 15 of
FCC Rules. Operation is subject to the
following two conditions:
If your transceiver does not operate
properly, check the following items
first. If you still have a problem, bring
the transceiver to your local Radio
Shack store for assistance.
1. This device may not cause harm-
ful interference.
2. This device must accept any inter-
ference received, including inter-
ference that may cause undesired
operation.
Important: Repair and/or adjustment
of this transceiver must be performed
by a technician with an FCC general-
class commercial license.
Your transceiver might cause TV or ra-
dio interference, even when it is oper-
ating properly. To determine whether
your transceiver is causing the interfer-
ence, turn off your transceiver. If the in-
terference goes away, your transceiver
is causing the interference. Try to elim-
inate the interference by:
• Check the battery pack condition.
• If you are using an external
antenna, check the antenna cable
and its connection at both ends.
• Check the connections of an
external microphone or external
speaker.
• Moving your transceiver away
from the receiver
VOLUME
• Check the settings of the
SQUELCH
1W/5W
control,
switch,
control,
NORM/CH16/WX
switch,
• Contacting your local Radio Shack
store for help
and the frequency channel thumb-
wheels.
If you cannot eliminate the interfer-
ence, the FCC requires that you stop
using your transceiver.
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19-1004.fm Page 19 Tuesday, August 3, 1999 9:11 AM
SPECIFICATIONS
GENERAL
Channels....................................All USA and International Channels Included, Plus
Ten Weather Channels and CH90, 91, 95, 96, 97
for International Usage
Frequency Method ........................................................................ Phase Lock Loop
ETR Synthesizer Antenna Impedance.......................................................... 50 ohm
Power Input.............................................................................................. 12 Volt DC
Frequency Range ................................................................. 156.025–162.275 MHz
Operating Temperature ............................................ –4°F to 122°F (–20°C to 50°C)
Dimensions (HWD) ............................................................... 17/8 ¥ 25/8 ¥ 71/4 Inches
(47 ¥ 66 ¥ 184 mm)
Weight........................................................................................ 1 lb. 3 oz. (1.09 kg)
TRANSMITTER
Power Output......................................................... 1 or 5 Watts (Switch Selectable)
Modulation ........................................................................................................... FM
Hum and Noise Attenuation ............................................................................ 40 dB
Audio Distortion............................ 10% Maximum at 1 kHz with ±3.0 kHz Deviation
Spurious Suppression..................................................................................... 60 dB
RECEIVER
Sensitivity.......................................................................................... 2 mV for 12 dB
SINAD .............................................................................................0.3 mV for 20 dB
Quieting Squelch Sensitivity ......................... Threshold 0.15 mV Maximum for 6 dB
SINAD Receiver Attack Time..................................................... 60 mSec Maximum
Adjacent CH Rejection.................................................................................... 65 dB
Audio Power Output................................................................ 300 mW at 10% THD
Spurious Response Attenuation ..................................................................... 60 dB
Hum and Noise Attenuation ............................................................................ 50 dB
Squelched Modulation Acceptance Bandwidth.......................... ±7.5 KHz Minimum
Specifications are typical; individual units might vary. Specifications are subject to
change and improvement without notice.
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NOTES
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RADIO SHACK LIMITED WARRANTY
This product is warranted against defects for 1 year from date of purchase from Radio
Shack company-owned stores and authorized Radio Shack franchisees and dealers.
Within this period, we will repair it without charge for parts and labor. Simply bring your
Radio Shack sales slip as proof of purchase date to any Radio Shack store. Warranty
does not cover transportation costs. Nor does it cover a product subjected to misuse or
accidental damage.
EXCEPT AS PROVIDED HEREIN, RADIO SHACK MAKES NO EXPRESS WARRAN-
TIES AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURA-
TION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states
do not permit limitation or exclusion of implied warranties; therefore, the aforesaid limi-
tation(s) or exclusion(s) may not apply to the purchaser.
This warranty gives you specific legal rights and you may also have other rights which vary from
state to state.
We Service What We Sell
9/94
RADIO SHACK
A Division of Tandy Corporation
Fort Worth, Texas 76102
10A5
Printed in Hong Kong
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