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Author Topic: Any ideas what this is for?  (Read 724 times)
K5TED
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Posts: 229




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« on: September 10, 2018, 11:28:07 AM »

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KC4ZGP
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Posts: 1961




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« Reply #1 on: September 10, 2018, 11:51:30 AM »

What in the heck?

Where ever did you find that picture?

A yagi pointed to the sky? A beacon? Hmmm....

Kraus
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W8JX
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Posts: 13268




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« Reply #2 on: September 10, 2018, 12:00:29 PM »

It is likely a remote site that they fly over at altitude and collect data from time to time. Could possibly be a satellite up-link too.
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--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
N8YX
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Posts: 1342




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« Reply #3 on: September 10, 2018, 12:46:22 PM »

Look in the background.

Those are weather data instruments.
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K7MEM
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Posts: 687


WWW

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« Reply #4 on: September 10, 2018, 02:34:53 PM »

What in the heck?

Where ever did you find that picture?

A yagi pointed to the sky? A beacon? Hmmm....

I note an offset in the elements along the boom, so it is more likely to be a log-periodic. And, judging from the thickness of the elements, the whole array is very wide banded.
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Martin - K7MEM
http://www.k7mem.com
G3RZP
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Posts: 1224




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« Reply #5 on: September 10, 2018, 03:54:02 PM »

looks to me like an ILS Marker Beacon Antenna, but without a scale, it's hard to guess the frequency. Certainly doesn't look big enough for an outer marker which would be around 75 MHz. Inner markers are higher.
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K3GM
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Posts: 2547




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« Reply #6 on: September 10, 2018, 04:46:13 PM »

Peter is correct.  It's a marker beacon antenna used in conjunction with the glide slope to an airport.  A single LPDA is usually used for an inner marker.  Dual antennas are often seen at an outer marker location.  The difference between the two is the the fly-thru time is shorter with two antennas than with one. Transmit frequency is around 75 MHz.
« Last Edit: September 10, 2018, 05:01:51 PM by K3GM » Logged
KC4ZGP
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Posts: 1961




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« Reply #7 on: September 10, 2018, 04:56:24 PM »


I was correct first. I suggested a beacon but I'm too mature to point  it out.

Oh gawd Kraus!
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