It’s a 40 meter (7 MHz) QRP or low power transceiver in which the transmitter is a simple crystal oscillator and the receiver is an equally simple regenerative design. What makes it so simple is ...
Barb-A-Watt is a QRP RF Power and SWR monitor to be used as a companion measuring device for measuring actual RF power output from QRP Transceiver, actual power to the antenna, SWR and power output ...
Cheap microcontrollers and signal generators have helped turned things around, and the $60 USD QDX from QRP Labs goes even further by sending the performance/price ratio through the roof.