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SPH 255DT
SPU 554KT

Two-Way FM Transceiver

Operating Guide

RELM WIRELESS CORP.
7100 Technology Drive
West Melbourne, FL 32904

OMSPH255DT

7100 Technology Drive
West Melbourne, FL 32904

©2000 RELM Wireless Corporation. All Rights Reserved

OMSPH255DT

W I R E L E S S C O R P O R A T I O N

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Summary of Contents for SPH 255DT

Page 1: ...ver Operating Guide RELM WIRELESS CORP 7100 Technology Drive West Melbourne FL 32904 OMSPH255DT 7100 Technology Drive West Melbourne FL 32904 2000 RELM Wireless Corporation All Rights Reserved OMSPH255DT W I R E L E S S C O R P O R AT I O N ...

Page 2: ...rchaser that all new Radio equipment of RELM s manufacture shall be free of defects in material and workmanship Equipment and accessory items not manufactured by RELM carry the standard warranty of the manufacturer thereof WARRANTY DURATION The warranty period for all parts is two 2 years The warranty period shall commence upon installation of the equipment or two 2 months from the date of shipmen...

Page 3: ...sing VOX 15 Optional Accessories Replacement Parts 15 Technical Support and Service 16 Specifications 16 Two year Limited Warranty inside back cover 16 Technical Support and Service Your Uniden dealer can provide you with technical assistance and infommation If your radio does not perfomm properly take it to a Uniden dealer for servicing The radio contains no user serviceable parts Unauthorized ad...

Page 4: ...can Mode Monitors the programmed scan list You can temporarily lock out selected channels External Speaker Microphone Jacks Allows use of an optional speaker microphone or headset for improved operation in special situations Note With the headset option you can activate the VOX feature for hands free transmit receive operation See Using VOX on Page 14 Channel Function LCD Channel Monitor Switch Ba...

Page 5: ...ernating low high low high indicating the key function is not allowed Down Channel Tone a short low tone occurring at every down channel change PTT Error Tone a low tone sounding as long as the PTT is held if transmit is not allowed on the selected channel BCLO Tone alternating high low tones sounding as long as PTT is held if the channel is busy TOT Caution Tone short high pitch beeps sounding ev...

Page 6: ...annels pressing the key will change the LCD VOX display from continuous to blinking sound the Disable Tone and cause VOX operation to stop Press the key again to restore nommal VOX operation Home Channel Select allows one touch selection of a pre programmed channel Both the A and B keys may be programmed for this function TX Disable inhibits the transmit function when active To disable transmit pr...

Page 7: ... no voice alert press the Monitor key to unmute the receiver and hear the call orange LED may be turned off by pressing any key The LCD CALL indication is turned off by pressing the PTT Monitor or SCAN key After the call is completed the radio can be readied for the next call by pressing the Monitor key or by changing the channel then returning to the two tone channel Transmit Time Out Timer Conti...

Page 8: ...remove the lock out condition from a channel manually select the channel and press L O again Nuisance channels may also be deleted while scan is active by pressing L O while receiving the channel or during the delay after the signal is gone but before scan resumes Drop Out Delay While scanning the radio stops at a busy channel and receives a transmission When the received call is over it resumes s...

Page 9: ...nks RED If the signal is coded with CTCSS DCS or 2 Tone Code the CALL indicator appears on the LCD Channel Scan In the scan mode the radio alternately monitors each channel until it receives a call You can scan all channels in the programmed scan list or you can modify the scan list by locking out individual channels from being scanned 1 Press SCAN to begin scanning The LCD SC indicator begins to ...

Page 10: ...urn the radio on by pressing the POWER button to the in position The display lights and shows the last selected channel designation Note To turn the radio off release the 63 button to the out position 2 Press the Monitor Key MON Adjust the speaker l volume to a comfortable UP level by pressing the pi Volume Up or Volume Down Key Note If you hold down either of the keys the volume steps rapidly in ...

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