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Re: [TowerTalk] Near Field Lightning Damage

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Near Field Lightning Damage
From: Patrick Greenlee <patrick_g@windstream.net>
Date: Sat, 18 Apr 2015 21:17:56 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Back in the 80's a tuna boat pulled into San Diego with every device on board containing a semi-conductor inoperative. CB radio, Marine VHF, SSB, SONAR, RADAR, VHS tape player, SatNav LORAN, and on and on... All the crew members wore digital watches which were all totally dead.

One near miss by a large lightning stroke took out everything with solid state semiconductor junctions. The good news was they didn't have a spotter chopper aloft at the time dependent on the aircraft beacon band transmitter on board to find the boat (helipad is the roof of the pilot house.) We theorized it was the EMP that ate everything as there was no evidence that the bolt hit the boat.

Later when asked what could be done to provide an immune backup comm radio we told them a mu metal box. A Faraday cage wouldn't stop the magnetic pulse.

Just a thought in case there are any serious preppers in our midst.

Patrick    NJ5G
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