Tag: w3nqn lpf

QRP labs Ultimate 3S Part 2

Welcome to Part 2, the project started in Part 1 and this covered the initial build and setup of the Ultimate 3S. Changes to the TXM are possible but require you to manually change the LPF and input a new frequency via the software. QRP labs have developed a relay switched LPF kit, and Part 2 covers the […]