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                        User’s Guide 
 
 
SP-400 Series Portable 
 
4/16 Channel VHF-FM Portable Transceiver 
4/16 Channel UHF-FM Portable Transceiver 
 
 
 
 
 
 
 
 
 
 
 
 
www.midlandradio.com                                                                                                                                                                                                                                                                                                                                        
                    
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                         SP-400 Series User’s Guide  FCC RF EXPOSURE COMPLIANCE REQUIREMENTS  FOR OCCUPATIONAL USE ONLY  The Federal Communications Commission (FCC), within  its action in General Docket 93-62, November 7, 1997,  has adopted a safety standard for human exposure to  Radio Frequency (RF) electromagnetic energy emitted  by FCC regulated equipment. Midland Radio Corporation  subscribes to the same safety standard for the use of its  products. Proper operation of this radio will result in user  exposure far 
                    
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                        SP-400 Series User’s Guide   Contents  Conventions and Symbols in this Book ................................... 4  Disclaimer ................................................................................ 5  Safety....................................................................................... 5  Introduction .............................................................................. 7  Radio models ....................................................................... 7  Radio feat
                    
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                         SP-400 Series User’s Guide  Sending a 2-tone/selective call or emergency call............. 20  Scanning channels............................................................. 21  Advanced Operations ............................................................ 24  Operating hands-free ......................................................... 24  Using the scrambler ........................................................... 25  Editing your scan list ..............................................
                    
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                        SP-400 Series User’s Guide   Disclaimer  Midland Radio Corporation is committed to continuous quality  improvements, for this reason specifications may change without  prior notice.  Every effort has been made to ensure that the information in this  document is complete, accurate, and up-to-date. Midland  assumes no responsibility for the results of errors beyond its  control. The manufacturer of this equipment also cannot  guarantee that changes in the equipment made by unauthorized  people wil
                    
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                         SP-400 Series User’s Guide   Do not operate the radio near unshielded electrical  blasting caps or in an explosive atmosphere.   Do not transmit without the antenna attached to the  radio. Though designed for protection against damage,  damage to the transmitter may occur.   Respect the environmental conditions. The radio is  designed to operate in harsh environments, but avoiding  extended or unnecessary exposure will prolong the  service life.   Never attempt to disassemble or service the rad
                    
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                        SP-400 Series User’s Guide   Introduction  Congratulations! By choosing the Midland SP-400 series, you  have selected a professional grade portable radio. Its rugged  design will provide years of reliable service and its sophisticated  software allows many customizable options.  Radio models  There are four models in the SP-400 series portable radio line.  The models differ only by band of operation and channel  capacity.  SP-410 – 4 channel VHF, 148-174 MHz.  SP-420 – 4 channel UHF, 440-470 MHz
                    
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                         SP-400 Series User’s Guide  47 CTCSS tones and 104 DCS codes programmable per  channel.   2-tone decode – your radio may be programmed to  respond only when paged with a two-tone sequence.  Two sequences selectable per channel and up to 15  different sequences programmable per radio.   VOX (voice operated transmit) – allows hands-free  operation using an optional headset/microphone.   Voice inversion scrambler – for secure  communications. Radio communications are encoded  and decoded, when act
                    
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                        SP-400 Series User’s Guide   Radio Controls  Please read this section to familiarize yourself with the  transceiver’s controls.  1 2 3 7  4 6 8  5 9  © 2005, Midland Radio Corporation 9                                                                                                                                                                                                                                                                                                                           
                    
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                         SP-400 Series User’s Guide  Top  [1] Channel selector knob. Rotate this knob to select the  operating channel.  [2] Power ON/OFF knob. Rotate this knob clockwise to turn the  transceiver on (counterclockwise to turn off).  [3] Status LED. Tri-color LED lights and flashes at different rates  to indicate operating conditions.  Front  [4] Speaker. Receive audio will be heard from the built in  speaker located in this area.  [5] Microphone. The internal microphone is located here.  Side (right)  [6
                    
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                        SP-400 Series User’s Guide   [8] PTT (Push to talk) button. The PTT button must be pressed  while you speak into the microphone. Release the PTT button to  receive transmissions from other radios.  [9] Lower function (scan) button. The lower function button  performs two functions. The primary function is activated by a  brief button press (press and release) and the secondary  function is activated by pressing the button for more than two  seconds (press and hold):   If you press and release th
                    
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                         SP-400 Series User’s Guide  Setup  Unpacking  The following items are supplied in the standard package:   One transceiver (SP-410, SP-420, SP-430 or SP-440)   One battery pack (18-B02)   One belt clip (81-BC1)   One plastic accessory dust cover   One rubber easy access dust cover   One user’s manual  If something is missing please promptly advise your supplier.  Attaching and removing the antenna  To attach the antenna:  1. Locate the antenna terminal (threaded female connector) on  transceiver
                    
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                        SP-400 Series User’s Guide   Installing and removing the battery pack  To install the battery pack:  Hold the transceiver’s body with one hand and the battery pack  with the other.  1. Slide the bottom of the  battery pack into the slots  on the bottom of the  transceiver.  2. Gently push the top of  the battery pack toward  the transceiver until a  click is heard. The  battery pack will snap  into place and should be  firmly locked.  To remove the battery pack:  1. Press the battery release  bu
                    
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                         SP-400 Series User’s Guide  To install the belt clip onto the battery pack’s body:  1. Slide the clip into the  appropriate guides  located on the back of  the battery until it firmly  locks.  To remove the belt clip:  2. Gently lift the belt clip  release.  3. While lifting the belt clip release slide the belt clip off the  battery.  Charging the battery pack  The battery pack should be charged prior to use. To charge the  battery pack you should setup the charger and insert the radio  (or bat
                    
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                        SP-400 Series User’s Guide   contacts of the battery pack must make contact with the  three contacts inside the cradle). The LED indicator will  glow red indicating the battery is charging.  5. The rapid charger will fully charge the 1300 mAH NiMH  battery in approximately 1.5 hours. The rapid charger will  change to a green LED and switch to a trickle charge rate  when a full charge is detected. The standard rate charger  will charge the battery in about 12 hours.   Removing the battery before 
                    
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                         SP-400 Series User’s Guide  Basic Operation  This section describes many of the standard functions available  on your SP-400 series radio. Many aspects of the radio can be  changed or customized to suit the requirements, so not all  functions may be available or operate as described.   Due to the programming options of the radio, certain  functions may be disabled or operate differently than  described here. If in doubt please contact your dealer or  communications coordinator for further detai
                    
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                        SP-400 Series User’s Guide   call operation. The following paragraphs describe these modes  of operation. Ask your dealer or communications coordinator if  you have questions on how your radio has been programmed to  operate.  Carrier squelch operation  A signal that matches the programmed receive frequency will be  heard if it is of sufficient strength to exceed the squelch  threshold. An on frequency signal exceeding the squelch  threshold level will be indicated by a steady green status LED. 
                    
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                         SP-400 Series User’s Guide  2-tone/selective call operation  2-tone or selective call signaling allows individual or group calls  to be made to your radio. The radio may have been programmed  to mute all receive signals until a 2-tone or selective call signal  has been decoded. When the programmed 2-tone or selective  call signal is decoded, the status LED will blink green, a ring tone  may sound, and subsequent receive audio will be heard over the  speaker. After the call has been acknowledged
                    
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                        SP-400 Series User’s Guide   released within two seconds the monitor function will deactivate  when released. If the upper function button is held pressed for  more than two seconds the monitor function will latch on. Press  and release the upper function button again to deactivate the  latched monitor function.   When the monitor function is activated a high pitched  beep will sound and the status LED will light amber.  When the monitor function is turned off a low pitched  beep will sound and 
                    
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                         SP-400 Series User’s Guide   The radio might be programmed with a timeout timer  which will automatically end your transmission after a  preset time. In this case release PTT and wait for a few  seconds. The radio transmitter will be enabled again  after a few seconds. Ask your dealer or communications  coordinator for further details.   The radio might be programmed for busy channel lock  out, which automatically disables the transmitter if your  channel is busy. In this case wait until the ch