10W HF Linear Power Amplifier. Comfortably produces 10W from 12V supply. Compact design with huge heatsink included, which will not overheat even on continuous 100% duty-cycle operation. 26dB gain wit..
This 50W Power Amplifier kit can be built for any single band of 80m, 40m, 30m or 20m using the supplied components. There are no Surface Mount Components (SMD) to solder. A suitable power supply e.g...
This 5W HF PA kit features an IRF510 MOSFET as the amplifier. But it also includes a discrete component power modulator (like a voltage regulator), which is controlled by an 8-bit Digital to Analogue ..
NOTE: The QLG2 GPS is out of stock until end-March 2021. Therefore the Deluxe 6-band U3S set will not ship until end-March 2021. If this is not acceptable, please order the items separately without QL..
This high performance receiver module uses a Quadrature Sampling Detector (QSD), also known as a Tayloe Detector. The mixer is arranged as a double-balanced mixer for maximum performance. The receiver..
This kit is an Oven Controlled Crystal Oscillator (OCXO) version of the standard Si5351A Synthesiser module kit. The 27MHz OCXO is kit-built, it does not use an expensive commercial OCXO component. Ye..
The Si5351A is a relatively recent clock-generator chip manufactured by SiLabs. It can produce three simultaneous independent 50-ohm impedance, squarewave outputs between 8kHz and 160MHz. Configuratio..
This relay-switched LPF board kit can have up to five additional LPF's plugged in, permitting the Ultimate3 and Ultimate3S QRSS/WSPR kits to sequence between 6 bands (including the LPF on the main U3/..
This polyphase network plug-in module is designed to fit the high performance receiver module, to cancel the unwanted sideband and produce a SSB output, without need for Digital Signal Processing. It ..
This is the basic kit that is at the heart of the Ultimate3S QRSS/WSPR transmitter kit, the VFO/Signal Generator kit, and the Clock kit. This "QRP Labs Control Unit" kit can be used in case it is nece..