This RF Wave Absorbion meter will detect signals between 10cms and 10m away all acording to the setting of the 22MegOhm gain adjustment potentialometer and the power of the transmitter.
The RF signal is detected across the germamium OA91 doides and rectified to a d.c. level driving a 10LED driver IC. The LED’s are marked 1 to 10 indicating the strength of the detected RF signal. This circuit is ideal for tuning up low power transmitters or locating hidden transmitters.
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