Sorry to hear about your lightning strike Mike. Hope there is not too
much damage. This discussion is certainly causing me to think about the
whole issue, especially as my shack is in a converted stable, completely
made of wood!

Years ago I remember my grandfather having a wireless aerial (as it was
known then) down his garden which came through an insulator in the
window frame and was connected to a ceramic knife switch on the window-
sill. This allowed changeover of the aerial from the wireless to earth
during thunder storms. Does anyone know of a source of such switches
these days?

Translation:
'wireless' = radio
'earth' = ground
'aerial' = antenna

73, Tom G3OLB