In Australia and New Zealand, our parks exchange is a little different to what’s been published online for other parts of the world, so if you’re just starting out chasing or activating with CW, here’s the commonly used script, and where you’ll find activity.

Following on from the previous exploration of how receivers convert a CW signal into an audable tone, we will take the next step in our journey to understand why pre-DSP receivers have a fixed pitch CW tone, and the oft overlooked feature there to ease your ears.

Needing a paired 49:1 transformer and a common mode choke (CMC) for a permanently installed EFHW, I whipped one of each up and mounted them in some 50 mm PVC pipe.

Small, high performing and cheap, what’s not to love about bifilar wound common mode chokes (CMC). This article will walk through the process of building one (or two).

Does your amateur radio station comply with EMR safety guidelines? The WIA and RSGB tools enable you to quickly evaluate, mitigate and document your compliance. I expect that in most instances, it would take less than 10 minutes to complete. It really is as easy as a, b, c.