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Biggest Antenna on the Planet

Jaydean

Member
Dec 18, 2019
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Hi Folks
Just wondering if anyone's seen the new antenna that Motormouth Maul has just put up. I've never seen anything like it before. It has a 117 foot long boom and 16 elements on 27Mhz! Iv'e seen big antennas before but nothing like this. https://www.computer7.com/the-biggest-cb-antenna-on-the-planet/
biggest-cb-antenna-large.jpg
 

Wow, I wonder what the beamwidth is on that antenna? Lots of rotor operation there following the different DX stations. Hope it stands many years and to hear him on it soon.
 
Biggest antenna? nope.
The OH8X 160m yagi is a 3-element monster with 12.9dBi gain that stands over 100m high and weighs a staggering 40 tonnes. It occupies a site of around 29,000 square meters and was built from 450 meters of tower sections, which needed 600 litres of paint.

160 and 80 meter beams at OH8X
upload_2020-10-9_11-40-37.jpeg
 
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Biggest antenna? nope.
The OH8X 160m yagi is a 3-element monster with 12.9dBi gain that stands over 100m high and weighs a staggering 40 tonnes. It occupies a site of around 29,000 square meters and was built from 450 meters of tower sections, which needed 600 litres of paint.

160 and 80 meter beams at OH8X
View attachment 40874

Sorry what I meant was that it is perhaps the biggest CB Antenna on the planet. Yes your antenna certainly wins size wise. Wow what a ripper. Thank you for sharing this with me.
Kind regards Jaydean
 
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What if it’s as big as the house?
A home is a world, so, . . . .

I’d been looking forward to reading this thread and it’s links after work. Then I passed this beaut in the last miles to the receiver.

That boom really did look about as long as that house.

1DAE74DB-888E-4DD5-8BB2-FBDD33030267.jpeg

Sorry about my 53-mph photo. This really is size-impressive, but it’s all the rest that’d make any of you slow in admiration.


I hope the owner claims it with a better pic.
.
 
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"Jim Creek achieves its worldwide range by transmitting a very powerful, very low frequency (VLF) signal, one with a wavelength of approximately seven miles and a frequency of only 24.8 KHz."

That power and frequency is very alarming to wildlife in the ocean and proves the claims it harmed thousands of dolphins, is absolutely true! This frequency range is dead center in the dolphins normal hearing bandwidth which extends to 50Khz. Obviously we need to communicate but don't pretend it didn't have consequences.

PS: Your dog can hear to 45 Khz. Wonder how they behave around that transmitter site? This transmitter is essentially a high powered, modulated dog whistle.
 
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"Jim Creek achieves its worldwide range by transmitting a very powerful, very low frequency (VLF) signal, one with a wavelength of approximately seven miles and a frequency of only 24.8 KHz."

That power and frequency is very alarming to wildlife in the ocean and proves the claims it harmed thousands of dolphins, is absolutely true! This frequency range is dead center in the dolphins normal hearing bandwidth which extends to 50Khz. Obviously we need to communicate but don't pretend it didn't have consequences.
OK, thats interesting I will take a better look at that. Yes transmitting at low frequencies like that is a bit of a worry especially when they use such huge power.
 
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Biggest antenna? nope.
The OH8X 160m yagi is a 3-element monster with 12.9dBi gain that stands over 100m high and weighs a staggering 40 tonnes. It occupies a site of around 29,000 square meters and was built from 450 meters of tower sections, which needed 600 litres of paint.

160 and 80 meter beams at OH8X
View attachment 40874

Just an idea of the true scale of the tower section beam elements..
scale_160m-150x150.jpg

And to have something this big horizontal at 300 ft is amazing ....
 
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  • @ Jim5570091:
    Maybe. I wasn’t impressed with just clamping the shield wire to the boom with a hose clamp. I built a l bracket with so239 female hubs. I posted a picture on the recent gallery’s.
  • @ Jim5570091:
    Well I cut the matching stubs down 1 inch at a time from about 20” down to 6”. Still no real changes.
  • @ 555 Central Missouri:
    Hello everyone, I have a old courier centurion pll 40 channel SSB, it has the extra channels and it has another switch that just moves the frequency down one channel on the dial, what is the purpose for this?
  • @ BJ radionut:
    LIVE 10:00 AM EDST