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POWER 

Press the assigned PF button to set the radio’s transmitter to the “Low Power” mode. Press 
this button again to return to “High Power” operation when in difficult terrain. 

 
 

Talk Around 

Press the assigned PF button to activate the Talk Around feature when you are operating on 

duplex channel system  (separate receive and transmit  frequencies, utilizing a  “repeater” 
station). The Talk Around feature allows you to bypass the repeater station and talk directly to 

a station that is nearby. When TA is on, the radio transmit on the receive frequency of the 
selected channel. 
 

 

CALL 1-4 

Press the assigned PF button to sent your radio’s identification code (ANI) to the dispatcher 
(requires the Optional DTMF pager UNIT) 

 
 

 

EMERGENCY 

This land mobile radio includes an  “Emergency”  feature, which may be useful if you have 
someone monitoring on the same frequency as your transceiver’s channel. 
 

Press the assigned PF button to initiate an emergency call. For future detail contact your 
dealer. 

 
 

Display Invert 

Press the assigned PF button to invert the LCD display to backward-facing readout. 

Press the assigned PF button again to return the LCD display to frontward-facing readout.  
 

 

Display Aliases 

Press the assigned PF button to change the display information to channel aliases (Alphabet 
8 character number). 
Press the assigned PF button to change the display information to channel number.  

 
 

SQL 

Press the assigned PF button to squelch adjust mode. The current squelch level is displayed 

on the LCD. The Squelch level is changed by pressing this button, current level is counted up.  
Return to channel by pressing the other button again. 

Tuning the tightens the squelch setting, allowing only stronger signals to open the squelch 
and heard. 

Summary of Contents for F-25U

Page 1: ...F 25V F 25U F 50V F 45U Operating Manual...

Page 2: ...AND MOBILE RADIO Only qualified technicians are allowed to repair this product Do not operate the radio without a proper antenna attached As this may damage the radio and may also cause to exceed FCC...

Page 3: ...artment that contains an LP gas container or its fitting No changes or adjustments shall be made to the equipment except by an authorized or certified electronic technician Using your radio to send pe...

Page 4: ...ly configured radio 1 VOL PWR Knob Turn this control clockwise to turn the radio on and increase the volume Turn it counterclockwise into the click stop to the radio off 2 BUSY TX Indicator Indicate t...

Page 5: ...error messages 5 Microphone Jack Connect the microphone plug to this jack 6 P C Buttons Programmable Function Buttons These buttons can be set up for the special applications such as High Low power s...

Page 6: ...wer connection 3 External Speaker Jack An external loudspeaker may be connected to this 2 contact 3 5mm mini phone jack Caution Do not connect either wire of this line to ground and be certain that th...

Page 7: ...ess the assigned PF button to Up down Channel The display can show channel numbers or channel labels Technician along programs the display mode and channel labels Transmitting Press PF button which is...

Page 8: ...includes the correct CTCSS tone or DCS code Time Out Timer If the selected channel has been programmed for Time Out Timer you must limit the length of each transmission While transmitting a beep will...

Page 9: ...d noise unmute the audio the BUSY TX indicator will grow green SCAN 1 4 The Scanning feature is used to monitor multiple channel programmed into the transceiver While scanning transceiver will check e...

Page 10: ...rgency feature which may be useful if you have someone monitoring on the same frequency as your transceiver s channel Press the assigned PF button to initiate an emergency call For future detail conta...

Page 11: ...button for 2 second to lock the front panel buttons this can be enabled to prevent radio setting from being disturbed MEMO CH 1 2 Press the assigned PF button to recall the programmed channel directl...

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