9-1004.fm Page 1 Tuesday, August 3, 1999 9:11 AM Cat. No. 19-1004 OWNER’S MANUAL Please read before using this equipment.
19-1004.fm Page 2 Tuesday, August 3, 1999 9:11 AM FEATURES Your Radio Shack MTX-103 VHF Marine Transceiver lets you transmit and receive on all United States and international channels in the VHF marine band, as assigned by the International Telecommunication Union (ITU). It also provides ten receive-only channels for weather information. Your transceiver has the following features: USA/International Channel Switch — lets you quickly switch from the USA channel mode to the International channel mode.
19-1004.fm Page 3 Tuesday, August 3, 1999 9:11 AM CAUTION RISK OF ELECTRIC SHOCK. DO NOT OPEN. ! CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. Warning: To prevent fire or shock hazard, do not expose this product to rain or moisture.
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 .......................................................................................
19-1004.fm Page 5 Tuesday, August 3, 1999 9:11 AM PREPARATION CHARGING THE BATTERY PACK The MTX-103 operates on a built-in rechargeable 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. Follow these steps to charge the battery pack. Caution: Do not use the transceiver while the charger is connected. 1.
19-1004.fm Page 6 Tuesday, August 3, 1999 9:11 AM Cautions: • To prevent permanent battery power loss, never charge the batteries in an area where the temperature is above about 80°F. The charger does not operate at all at temperatures below 32°F or above 113°F. • Never use any other charger to recharge the transceiver’s battery pack. This could permanently damage your transceiver or the battery pack. Important: This transceiver uses a rechargeable nickel-cadmium battery pack.
19-1004.fm Page 7 Tuesday, August 3, 1999 9:11 AM USING AN EARPHONE To listen privately or to hear better in a noisy area, remove the plug from the 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 AN EXTERNAL SPEAKER/MICROPHONE 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.
19-1004.fm Page 8 Tuesday, August 3, 1999 9:11 AM OPERATION RECEIVING 1. Turn SQUELCH fully counterclockwise. 2. Turn on the radio by turning VOLUME clockwise. Adjust VOLUME to the desired listening level. 3. Adjust SQUELCH to eliminate background noise between transmissions. Wait until there is no signal on the channel, then slowly turn SQUELCH clockwise until the background noise stops. 4. Raise the protective cover. 8 5. Use the channel thumbwheels to select the desired channel.
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 Assignments.” using the channel thumbwheels. See “Channel Assignments” for the receive-only weather channels. 9. To turn off the radio, turn VOLUME counterclockwise until it clicks.
19-1004.fm Page 10 Tuesday, August 3, 1999 9:11 AM TRANSMITTING When making a call using a marine transceiver, you must follow these calling 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. • 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).
19-1004.fm Page 11 Tuesday, August 3, 1999 9:11 AM 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 24hours a day. There are three levels of emergency calls: • 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.
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 transmission. Misuse of a channel is a violation of FCC regulations. You can listen to any channel.
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 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 TX RX 156.050 – – – 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.
19-1004.fm Page 14 Tuesday, August 3, 1999 9:11 AM International VHF Marine Channels Frequency (MHz) Channel 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 14 TX RX 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.
19-1004.fm Page 15 Tuesday, August 3, 1999 9:11 AM Comprehensive VHF FM Marine Radiotelephone Channels Operating Channel Designations Ship TX Coast RX 1 2 3 4 5 6 7 7A 8 9 9 10 11 12 13 14 15 16 17 18 18A 19 19A 20 21 21CG 22 22CG 23 23CG 24 25 26 27 28 WE1 WE3 WE5 WE7 WE9 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.
19-1004.fm Page 16 Tuesday, August 3, 1999 9:11 AM Operating Channel Designations Frequency (MHz) Ship TX Coast RX 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 88 88A WE2 WE4 WE6 WE8 WE10 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.
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 design and craftsmanship. The following suggestions will help you care for the transceiver so you can enjoy it for years. Keep the transceiver dry. If it gets wet, wipe it dry immediately. Liquids might contain minerals that can corrode the electronic circuits. Handle the transceiver gently and carefully.
19-1004.fm Page 18 Tuesday, August 3, 1999 9:11 AM IF YOU HAVE PROBLEMS 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. Important: Repair and/or adjustment of this transceiver must be performed by a technician with an FCC generalclass commercial license. • Check the battery pack condition.
-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 ......................................................
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19-1004.fm Page 24 Tuesday, August 3, 1999 9:11 AM 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.
