[turretslug]

I ended up putting stainless steel mosquito mesh (this has better transmission ratio than standard metal gauze) across the display, as both VFD and LED versions of the Chinese PIC counters are rather hashy because of the display driving. The LCD ones might be better but I haven't tried these, I've never liked the "budget" look of LCD stuff and many can be a bit flaky long-term. No doubt a well-equipped RF lab could prove that pucker copper screening mesh performs better than stainless steel, but the latter is ubiquitous and cheap, and it's only a small area slot in a metal box. It also has an appealing tech look to it!