Midland 75-440 Gmrs Transceiver Users Manual

 
 
75-440 
 
UHF Handheld GMRS Transceiver 
 
User’s Manual 
 
 
 
 
 
 
 
 
 
Copyright © 2003 by Midland Radio; all rights reserved.  

75-440 User manual 
Page. 2
In this book… 
 
IN THIS BOOK…................................................................................................................................................. 2 
I
NTRODUCTION.................................................................................................................................................... 4 
W
ARNING...

75-440 User manual 
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LIMITED WARRANTY .................................................................................................................................... 28 
  

75-440 User manual 
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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)....

75-440 User manual 
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•  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...

75-440 User manual 
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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. 
  

75-440 User manual 
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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] Power ON/OFF knob. Rotate this knob to turn the 
transceiver on and off. 
[3] Status LED. Glows in different colors to show the 
radio’s current status. 
 
 
Front 
[4] Speaker....

75-440 User manual 
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Side (left and right) 
[9] Microphone connector. For remote 
speaker/microphone, headsets for VOX use and 
other accessories. It must be protected with the 
supplied rubber cap when not in use. For the 
related pin connections please see to “Microphone 
connection”. 
[10] Battery pack. This NiMH battery pack supplies 
energy to your radio. 
[11] Release button (located on the battery’s body). 
Allows to remove the battery pack 
[12] MON (monitor) button. Enables the...

75-440 User manual 
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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.  

75-440 User manual 
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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. 
,...