The world's cheapest, lightest, simplest yet most flexible and expansion-capable WSPR high altitude balloon tracker ever! Includes USB interface for configuration, 128K disk, tons of features... perfe..
A programmable crystal replacement. It has three independent outputs with frequency range 3.5kHz to approx 300MHz, and can be optionally GPS disciplined. Configuration is by a micro-USB connector and ..
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...
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..
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/..