Discussion in 'Survey Center' started by NN4RH, Nov 13, 2019.
I recently suffered electronic damage from a lightning strike so now I unplug things.
I've been dabbling in some form of radio since 1973. I've had CB antennas on 50' towers and now wires for HF and aluminum verticals for VHF for several years and yet to have lightning damage to an antenna or radio. I have had strikes on trees within 50' or less of antennas so I've been lucky I guess.
On the other hand a good friend had his antennas disconnected and the power supply unplugged and somehow had a strike jump the gap and take out three radios and blow an antenna off the tower. If it's going to happen man will not prevent it IMHO.
Good Questions ! Good Answers ! Picture from (Santa Barbara Fire Dept California) The threat to radio rooms is real.
The people in this area probably thought, lightning happens somewhere else. But when that perfect storm comes your way its too late
even a lightning spur, as you can see many would likely cause death and damage to a radio station. Use PolyPhasers or Alpha Delta transmission line protection with a good ground. Take the lightning away from you.
That works. A good ground will also help reduce any static too.
I have 2 Polyphasres on the 600 ohm open feed-line, but I still disconnect the radio side when Lightningmaps.org tells me too.
Direct or near-direct hit? Forget about it. I've seen lightning arcs jump 30 feet horizontal straight through concrete walls.
Jim, WQ2H / WK2XAH
Cool photoshop job!
Concrete is a better conductor than air.
How do you think TV stations, cell towers, AM/FM radio, etc., stay on the air?
Proper grounding and protection.
Maybe you could attempt an answer to the original question for the benefit of those who don't possess your infinite wisdom.
Or are you just another troll?
"What (if anything) do you unplug for Lightning Storms ?"