Tag: filter

Back in the mists of time, I believe it was July of 2021, Branch 05 facilitated its first 2 metre band, filter building session. Keith Birse ZL4JA (pictured below) had devised a filter, constructed on a tiny PC Board, which could improve the performance of cheap 2 metre handhelds, of Chineseium construction. Although Keith is...

On Sunday there was almost no sun as Christchurch Amateur Radio Club, clubrooms buzzed like a beehive with lots of busy bees buzzing. Turns out that this was the big day of constructing the 2-metre filter projects. Keith Birse ZL4JA has been the driving force behind this project. He demonstrated a prototype filter at the...