December 2018 Diode Tester article correction

In the December 2018 edition of RadCom we published the Multi-Mode Diode Tester article by Dave Ellis, G4AJY. Unfortunately some gremlins crept into the circuit diagram, meaning that it wouldn’t work as intended if built as shown. The main problems were the 1M resistor R4 and the labelling of switch Sw1b.. R4 was incorrectly shown […] Read the Original Article