After dinner I went down to the transmitter building and as soon as I walked in I could hear the cracking sound of an electrical ark. It sounded like a spark plug going off every five seconds. I tracked it down to my antenna tuner and I quickly removed the cover to see a bright ark flashing over on the antenna switch. I removed the coaxial cable and the spark started to jump across the N-type connector on the cable. This was on the forty meter vertical tower antenna and the sixty knot dry wind was inducing so much static is was causing thousands of volts to appear on the antenna. You wouldn’t believe it if you never saw it happening. I removed the cable leaving a UHF connector where the feeder enters the building and it would charge up and about every ten minutes it would ark over with and extremely loud crack and bright flash scaring the shit out of me.
At 1900 I had another unsuccessful EME sked and I ended up staying in the transmitter hut working long distance till 1am. Some of the more memorable contacts were the Italian research station located at Terra Nova Bay in Antarctica, the Falkland Islands and my QSL manager Jon in the States.
Had a long wire antenna do that. Arcing over 6mm. Impressive.
ReplyDeleteHi Chris,
ReplyDeleteI have heard of this happening during a blizzard from snow particles, but not from just dry wind. What's your email address?
Regards,
Craig