QRP Manuals & User Guides

QRP QCX-mini 5W CW Transceiver kit Product Information: QCX-mini CW Transceiver The QCX-mini is a high-performance 5W CW transceiver kit designed and produced by QRP Labs from 2017-2020. This single-band…

QRP U4B Ultimate4 Balloon Tracker Introduction The U4B tracker was developed over a period of 7 years from 2015 to 2022, in collaboration with Dave VE3KCL who has launched 83…

QCX AGC module QCX-series AGC module installation instructions Introduction QCX-series transceivers (QCX, QCX+, and QCX-mini) do not have built-in Automatic Gain Control (AGC). This small 19 x 16mm ready-assembled AGC…

Discover the QRP 5M/16.4FT HF Antenna, a portable, multifunction, stainless steel antenna designed for the 14-30MHz frequency range, capable of handling 300W. Easy to use and carry, ideal for radio…

A comprehensive guide to building a 40-meter QRP (low power) amateur radio transmitter, covering construction techniques, component selection, oscillator and amplifier circuits, and troubleshooting. Learn about PC board fabrication, inductor…