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Hello Hardhead, i can understand your frustration with getting the circuit diagram for your UNIDEN PRO 520XL. mine too was made in the phillipines and i am also unable to get a circuit diagram. if the set you have just received has any TX RX audio out problems
replace the 2sc2166 rf transister...
I realy do wonder why you would bother to do a "mod" on a CB radio, even with your mod they are next to useless, other than close comms in convoy or say on a farm. No guys and girls, i'm not knocking you , if you like it ,do it, but i would like you to tell me what benefits you get out of doing...
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