That shows skill and a deep understanding of radio. I think that’s the attraction for me. Most commercially available high-frequency (HF) transceivers are capable of being dialed back to QRP ...
Even though manufacturers of handheld ham radios have been busy adding all sorts ... which was the method of choice for powering things like QRP rigs when operating off-grid.
This QRP SWR meter was designed for using with my Yaesu FT-817ND ... The microampermeter I used for SWR indication is actually a tuning indicator from an old radio receiver. Its full deflection ...
Ham radio designates as QRP transmission carrying low power (5W or less ... Great distances can be achieved using the HF spectrum (3 to 30 MHz) where most of the traditional ham bands are located; ...