[BC] Impedance changes - was lighting removal

[Gary Peterson]

" The beacon apparatus itself should have a minimal influence on base Z. The
wires and chokes would have a greater influence. If the conduits were not
properly bonded to the tower(s) then their removal may influence base Z.
Tom Osenkowsky, CPBE "

A few years ago, during cold, windy February weather, I noticed that there
was a shift in the phase & ratio on a 2 tower DA that had been notoriously
stable.  When I was driving into the site, I noticed one of the 4 ft.
lightning rods that perched alongside the 300 mm (~ 3 ft. tall) beacon was
missing.  I drove to the tower and found the rod on the ground just outside
the tower fence.  The rod had work-hardened, from vibration, and finally
snapped off.  After replacement with a new one of identical length,
everything fell right back into place.  A few months later, I lost the
lightning rod on the other tower.  It doesn't take much to be seen on a
phase monitor.  We're talking a 215 ft. tower on 1150 kHz here.

Gary, K?CX