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75-440
UHF Handheld GMRS Transceiver
User’s Manual
Copyright © 2003 by Midland Radio; all rights reserved.
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75-440 User manual In this book… IN THIS BOOK…................................................................................................................................................. 2 INTRODUCTION .................................................................................................................................................... 4 WARNING NOTES ..........................................................................................................................
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75-440 User manual LIMITED WARRANTY.................................................................................................................................... 28 Page. 3
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75-440 User manual Introduction Congratulations. 75-440 is an advanced GMRS (General Mobile Radio Service) Professional Radio. Its rugged design allows it to be your reliable partner even during hard working days. Its LCD as well as user friendly controls make the 75-440 easy to use. To extend the flexibility of the radio, a “VOX” (Voice Operated Transmit) function has been added which allows switching the transmission just by talking in full hands free condition (with optional headset).
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75-440 User manual • Be sure the “PTT” key is not pressed when you do not need to transmit. • Do not operate the radio near unshielded electrical blasting caps or in an explosive atmosphere. • Do not transmit without the antenna fitted on the radio. Though it is provided with a protection, it may damage the TX output final stage. • Respect the environment conditions. The radio is designed to be used in heavy environments, however avoid exposing it to extremely hot or cold temperature (out
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75-440 User manual Conventions and Symbols in this Book This symbol marks a ‘note’. Notes are hints or tips which offer additional information to help you. This symbol marks a ‘caution’. Cautions are special notices, which you should read and follow carefully to avoid possible damage to your equipment and to avoid potential danger to yourself or other people. Key names will be highlighted in bold. Important sentences and words are highlighted in Italic. Page. 6
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75-440 User manual Part Names and their functions Please have a look at the following parts description in order to familiarize yourself with the transceiver’s main parts and controls. Numbers in brackets refer to the illustration. Top [1] Antenna connector. Fit the antenna to this connector (MX thread type). 2 [2] Power ON/OFF knob. Rotate this knob to turn the 1 transceiver on and off. [3] Status LED. Glows in different colors to show the radio’s current status. 3 Front [4
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75-440 User manual Side (left and right) [9] Microphone connector. For remote speaker/microphone, headsets for VOX use and 11 other accessories. It must be protected with the 12 supplied rubber cap when not in use. For the related pin connections please see to “Microphone connection”. 14 9 [10] Battery pack. This NiMH battery pack supplies energy to your radio. 13 [11] Release button (located on the battery’s body). 10 Allows to remove the battery pack [12] MON (monitor) button. E
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75-440 User manual Setup Unpacking The following items are in the package: (a) Transceiver’s main body (b) Flexible antenna (c) Battery pack NiMH 1,300 mA/h (d) Belt clip (e) Users guide (this book!) If something is missing please promptly advise your supplier. Page. 9
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75-440 User manual Fitting and removing the Antenna To fit the antenna: 1) Locate the antenna terminal (thread MX type) on transceiver’s top. 2) Hold the transceiver with one hand and the base (the thicker part) of the antenna with the other. 3) Attach the included rubber duck antenna to the antenna terminal by turning it clockwise until it is firmly locked. Do not overtighten. To remove the antenna do the same described procedure. At step 3 turn the antenna base counterclockwise. Alwa
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75-440 User manual Installing/removing the belt clip The supplied belt clip allows you to hang the transceiver on your belt or jacket when you are not using the radio. To fit the belt clip onto the transceiver’s body: 1 SLIDE DOWN 1) Gently slide the clip into the appropriate guides located on the transceiver’s battery pack until it firmly locks. To remove the belt clip: PUSH 2) Gently move the latch located between the top LIFT UP of the belt clip and the battery pack towards the
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75-440 User manual Basic Operations Switching the radio ON and OFF To switch the radio on: 1) Rotate the “PWR/VOL” knob clockwise until the radio is switched on. The CPU will start an auto test as follows: • LED will glow GREEN, then RED and turn OFF. • LCD will display all segments and icons. The letters "PS"("PASS") will be displayed followed by a long beep. • LCD will display the last operating mode. The self-test goes very fast. 2) After the auto test has been carried out LCD wil
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75-440 User manual Channel selection Each channel is identified by 2 numeric digits. The FCC assigned GMRS channel frequencies are programmed into your radio as shown in the table below. Channels 1 through 7 are shared with FRS radios. Channel Channel Freq. MHz. Freq. MHz. Channel Freq. MHz. (FRS Ch.) (Duplex) Tx/Rx 1 462.5625 8 462.5750 16 467/462.5750 2 462.5875 9 462.6250 17 467/462.6250 3 462.6125 10 * 462.6750 18 467/462.6750 4 462.6375 11 462.5500 19 467/462.5500 5 462.6625 12 462
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75-440 User manual 2) To Disable “GROUP MODE”. Press the “MON” button: “SAT” icon is not displayed. You are now working in “Open Traffic”. NOTE: if “SAT” icon is never displayed, “CTCSS/DCS” tone is not programmed. “GROUP MODE” function is not available. See ‘Setting “Group Mode” codes’. 3) Press and Hold “MON” button for three seconds, internal squelch will be disabled and your speaker is un-muted. Press and release the “MON” button to restore the squelch to normal operating condi
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75-440 User manual Scanning channels Your 75-440 has three types of scanning available. The most used is Normal Scan. This allows you to scan all the channels you have designated in your scan list (see Creating Scan List). The next is scan with a Priority channel (channel 1). This scan allows you to monitor channel 1 more often than the other channels while scanning (for this scan to work properly you must have at least 6 channels in the scan list). The third scan type is Dual Watch. This
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75-440 User manual 2) Deactivate scan by pressing “Call” + to remove the Priority channel then press “Call” + to stop the scan. Selecting Dual Watch 1. Choose the second channel you wish to use. Press the “CALL ” + key to activate the Priority channel. A "P" will be displayed in the lower right corner of the display to confirm your selection. 2. The radio will scan the chosen channel and the priority channel (usually channel 1). Radio lock Your 75-440 has been provided with a securit
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75-440 User manual Advanced Operations In this section we’ll describe some advanced operation which you can do with your handheld transceiver: Handsfree Transmit (VOX) VOX (Voice Operated Transmit) is an automatic system, which allows you to automatically switch the transmission in hands free mode just by speaking in the built-in microphone of a headset (not provided with the unit). Please ensure that the handset is suitable for your transceiver as reported in the paragraph “Microphone co
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75-440 User manual Roger Beep A roger beep will be heard by the other party when “PTT” button is released. To enable or disable Roger Beep “FUNC”: Press the "FUNC" + CALL” keys. Key Beep A beep is heard by the user when any key is pressed with the exception of the “PTT” button. To enable or disable Key Beep: Press the “FUNC” key + “MON” button. Setting “GROUP MODE” (CTCSS/DCS) codes To SET CODES”: Turn off the radio. Press and hold the “ and keys. Turn the radio on. • Select the ch
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75-440 User manual 47 2F 199.5 Hz CTCSS 102 66 306 DCS 48 30 206.5 Hz CTCSS 103 67 311 DCS 49 31 229.1 Hz CTCSS 104 68 315 DCS 50 32 254.1 Hz CTCSS 105 69 325 DCS 51 33 023 DCS 106 6A 331 DCS 52 34 025 DCS 107 6b 332 DCS 53 35 026 DCS 108 6C 343 DCS 54 36 031 DCS 109 6d 346 DCS 55 37 032 DCS 110 6E 351 DCS 56 38 036 DCS 111 6F 356 DCS 57 39 043 DCS 112 70 364 DCS 58 3A 047 DCS 113 71 365 DCS 59 3b 051 DCS 114 72 371 DCS 60 3C 053 DCS 115 73 411 DCS 61 3d 054 DCS 116 74
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75-440 User manual Battery Packs Information on rechargeable batteries • When the battery pack is new it will not provide 100% of its efficiency. To reach the full battery run time you have to “run-in” the battery with at least 3-4 deep charging/discharging cycles. After that it will reach its maximum capacity. Please see “Proper charging of battery packs” for further details. • When you properly use the battery pack, you will obtain about 400 charge/discharge cycles (300 with the option
