I have built both versions of the S-meter ?- my uBITX currently has the second Nano version fitted, but I also made the option using the LM-358 chip. Both work although you do need to add the calibration values in Memory Manager for the amplifier version. It¡¯s a very easy build - but fiddly
if you try to do it in the IC socket as Dr Lee does. ?
Jonathan
G5LUX
