From PA0SE to All Dick's field strength meter looks interesting - well done Dick. Not sure whether it would detect much of my QRPP set up at 1km! The DVM I use with my FSM indicates voltages less tha
There are two factors to be considered, sensitivity and selectivity. A dc-receiver can be made as sensitive as a superhet. ... I think that a third factor has te be considered, especially on LF : the