Operation
External Mic/Headphone Jack
Auto Squelch
Maximum
Range
Extender
Note
Auto Squelch
Your microTALK PR 900 DX is equipped with Auto Squelch, which automatically shuts off weak transmissions and unwanted noise due to terrain conditions or if you have reached your range limit.
Auto Squelch sensitivity can be changed to HI (least sensitive) or LOW (most sensitive) by pressing the
Mode Button until the“5” (HI or LO) is displayed. Use the Channel Up or Down Buttons to toggle between HI or LO sensitivity. Press the 
PTT Talk Button to confirm your selection.
External Mic/Headphone Jack
Your microTALK PR 900 DX can be fitted with a variety of accessories (not included),freeing your hands for other tasks.
To attach an external mic/headphone accessory:
External Mic/
Headphone
Jack
Note
To order optional microphone/ speaker accessories,
see page 31.
To learn more about the range of your microTALK PR 900 DX, see page 22.
Range is dependent on battery condition and geographic terrain.
Maximum Range Extender
When the signal you want to hear is consistently weak, you may place the radio in Maximum Range Mode. Press and hold the 
Monitor Button for 1 second. The “MON”icon will be illuminated on the LCD. To return to normal operation, press and
hold the 
Monitor Button again or change channels.
PUSH & HOLD
Insert plug into SPKR/MIC jack on the top of the unit.
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