The BDARS March social/technical night on 19 March continued with the practical construction of our WSPR transmitter kits. Under the guidance of Dave VK4ZF and Mark VK4MDH, our members continued with the assembly of the various boards.
Members brought their own soldering equipment, lamps and tools allowing mini electronics workshops to be set up on the benches.
It was a great help to be able to see a fully assembled kit, a guide to component placement.
Dave’s spectrum analyser allowed us to check the performance of the low pass filters.
A 40 metre low pass filter under test, showing the sharp cut-off over about 7.5 MHz