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Author Topic: "CQ 10,000, CQ 10,000." Ham crosses Atlantic on 29 kHz.  (Read 1344 times)
K0OD
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Posts: 2533




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« on: April 14, 2014, 03:13:31 AM »

 “As far as I know, these 29.499 kHz VLF signals are the first amateur VLF transmissions to span the Atlantic — "

"His transmitter has a 3CX3000A7 tube in the final, running grounded grid and generating 800 W. The effective isotropic radiated power (EIRP), however, was estimated to be approximately 1 mW. To operate on 10,000 meters, Raide has a 90 foot vertical antenna using a reconfigured Zepp, fed via a huge loading coil that is 4 feet tall, more than 1 foot across and comprised of some 2000 feet of #14 wire. He employs a few thousand feet of “chicken wire” for his radial system."

"Ziegler said German and UK experimenters have been experimenting at frequencies below 9 kHz, which is unregulated. "

http://www.arrl.org/news/hams-experimental-vlf-signals-heard-in-the-uk-europe
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AF5CC
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Posts: 822




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« Reply #1 on: April 17, 2014, 06:19:58 PM »

Wonder when OH8X will put up a beam for 10,000 meters?

73 John AF5CC
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K9AIM
Member

Posts: 949




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« Reply #2 on: April 17, 2014, 07:21:11 PM »

Wonder when OH8X will put up a beam for 10,000 meters?

73 John AF5CC

you made me check out their website:

http://www.radioarcala.com/?page_id=106#M7

omg!

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W7MMQ
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Posts: 24




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« Reply #3 on: April 18, 2014, 09:36:23 AM »

unfortunately that tower came down in a winter storm last year. 
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K9AIM
Member

Posts: 949




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« Reply #4 on: April 18, 2014, 10:32:01 PM »

unfortunately that tower came down in a winter storm last year. 

that explains the loud thud i heard here  Wink

seriously though, how does that get put in the air in the first place?  heavy duty helicopter?

also, does that extend line of sight to a distance of about 500 miles?  Cheesy
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