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Look at the squelch knob. If it is turned fully counterclockwise, it is in "Auto". Turn the knob clockwise to enter the manual mode and adjust the range untill static is heard. Reverse direction until the static is no longer heard.
Try it with an external speaker. The external speaker jack receives the audio from the scanner before it goes to the internal speaker. If the jack thinks there is still something plugged into it, the audio to the internal speaker is interrupted. If the jack is stuck, it may still work with an external speaker.
hi . i w given a Uniden Bearcat 175XL 16 channel scanning radio. the OPERATION buttons are: PRI SPEED WX LIMIT SRCH HOLD DELAY LOCKOUT and in orage color: SCAN MANUAL. please help. the only thing i can get to hear is the WEATHER CHANNEL. i cant even hear the squelch. can u help
provided you turned the squelch know and it didnt help, i would trace back from the squelch control to the first and second transistor you come to and that should be the squelch circuit. if you know how to check them with an ohm meter you can find out which one it is, if not you can just replace them both for under 5 bucks.