Grid DIP Meter

Posted on Feb 5, 2014

This circuit was developed by Luigi Falcone, I1FLC. He uses seven plug in coils covering 3. 0 to 30Mhz in a Colpitts oscillator circuit. The coaxial socket J2 permits connection to a frequency meter when required. The coils are wound on Teflon formers with two `female` sockets which plug-in to two `male` sockets on the instrument. TR2 forms a DC am

Grid DIP Meter
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plifier permitting the use of a 1mA FSD meter with sensitivity controlled by R7. With TR1 switched off (via S2) the instument forms a field strength meter/ RF sniffer.

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