How to measure ham radio QRPp using a device from my past. How to jailbreak your thesis. Gudermanians? Measuring QRP Power I haven't seen a lot of QRP, (low power amatuer radio transmitter), power meter projects. The ones I have found, usually mention that it's difficult to measure low powers, (the Rockmite nominally outputs 500 mW aka QRPp.) This has been a bit of a mystery to me until today when I found this video from Mark Smith, N6MTS: In short, Mark explains that the issue is the drop across the rectifying diode used to generate the DC-ish current used to drive the meter. If the RF peak voltage is too low to forward bias the diode, then there's no measurement. A bias voltage can be applied to the diode to make it just-ready-to-go all the time, but that is difficult per N6MTS, (I haven't learned why yet.) Mark's solution is to use an Analog Devices logarithmeic amplifier. The amplifier has an output indicating peak RF power at the input. Mark's plan (as ...