One-valve QRP CW Transmitter by This e-mail address is being protected from spambots. You need JavaScript enabled to view it OH8MNM, Finland

Raimo's crystal-controlled QRP one tube CW transmitter is based on my 80m CW TX, but he uses a PCL86 valve with some slightly different component values and a different tank coil to mine. The circuit diagram is shown below. This TX gives up to 6W output but This e-mail address is being protected from spambots. You need JavaScript enabled to view it prefers to use 1 - 3W QRP power. The transmitter also works Ok on 40m.