Quote:
Originally Posted by abdou2014
Thank you Geo , there is something weird, I feed both receiver and beep circuits with a 9v battery and 5v regulator,
As the battery works too much and the voltage decreases, I can calibrate my receiver in a very sensitive position 2.5 meters for a 1.5v wire, and when the battery is recharging it cannot be in this position.
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I can't answer without see the schematic of receiver....