Unsurprisingly, the internet is chock full of plans and kits for everything from full-featured QRP rigs that can work single-sideband (SSB) and continuous wave (CW) modes to tiny CW-only ...

[Pete Juliano, N6QW] built a 20 M QRP CW transmitter using just a handful ... output 10 mW at frequencies up to 30MHz. [Pete]’s rig was originally putting out 0.4 mW with a 3 V supply, and ...