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Programmable Features

The channel frequencies and options (such as VOX,
Tone-Coded channels, and scan channels) have been
pre-programmed into your radio by your Uniden
Dealer. Check with your Dealer for the specific
features in your radio.

Scan Type

Scan Dropout Delay

Transmitter Time Out Timer

Battery Save

Busy Channel Lockout

Function Beep

CTCS S/DCS/2-Tone Rece ivelT ran sm it Codes

TX Power High/Low

A/B Key Functions

VOX Sensitivity and Hang Time

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TAC Function - allows “talking around” the repeater by
shifting the transmit frequency to the channel's receive
frequency. Pressing the key will cause the Enable Tone
to sound and the LCD “TAC” indicator to begin blinking.
Press the key again to disable the TAC function. The
TAC function is automatically disabled when the channel
is changed or the radio is powered off.

TX HULO Power - allows channels programmed for high
power to be switched to low power. Activate by pressing
and holding the key for at least 1.5 seconds. The LCD
“LOW POWER” display will appear and the tone will
sound. If pressed on channels already programmed for
low power, an error tone will sound. To restore high
power operation, press and hold again for 1.5 seconds.
The LCD “HIGH POWER” display will appear and the
corresponding tone will sound.

VOX Disable/Enable - allows disabling the VOX mode
on channels programmed for automatic VOX operation.
On those channels, 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, press and hold the key for at least
1.5 seconds. The LCD “TX DISABLE” display appears
and the Disable Tone sounds. Transmit on all channels
will be inhibited when activated. Press and hold again for
at least 1.5 seconds to enable normal transmit operation.

CTCSS/DCS Disable/Enable - disables the CTCSS/
DCS coded squelch programmed for the selected
channel. To do so, press and hold the key for at least 1.5
seconds. The LCD “S_CODE OFF” display will appear
and the Disable Tone will sound. Press the key again to
restore the programmed coded squelch operation. The
programmed operation is automatically restored when
the channel is changed or the radio is powered off.

DTMF Keypad Operation

The DTMF keypad may be programmed to allow access
to the telephone network. DTMF operation is possible
only on channels designated for that function. Pressing
PTT will cause the LCD MDTMF INPUT display to
appear for 3 seconds if the selected channel is
programmed for DTMF operation. The first DTMF digit
must be pressed within the 3 second period. After
pressing the first digit, the PTT may be released and
transmit will continue as long as extra digits are pressed
within the programmed “hang time.”

Summary of Contents for SPU 554KT

Page 1: ...er 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 OMSPH255...

Page 2: ...chaser 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...

Page 3: ...ing 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...

Page 4: ...an 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 operatio...

Page 5: ...rnating 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...

Page 6: ...nnels 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 Chann...

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...

Page 8: ...emove 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 du...

Page 9: ...ks 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...

Page 10: ...rn 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...

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