[GreenKeys] Fwd: That's not a RTTY station........

[Duncan Brown]

Thanks, Nick!

I figured you would know, but couldn't wait to make some guesses.

On the Inverted Cone antennas, I was looking at them with street-view 
from Rainwood Road. From there, it looked like they lined up with some 
of the LPs.  Looking straight down on them, I see that they are separate.

Good to see that the USAF is investing money in HF and not relying 
completely on satellites.
Thanks,

Duncan


On 1/24/2020 11:15, Nick England wrote:
> Here is an article on that USAF HF transmitter site -
> https://www.offutt.af.mil/News/Features/Display/Article/312829/rural-communications-site-has-global-mission/
>
> Here's a diagram and photo of an HF rotatable log-periodic array
> http://www.navy-radio.com/ant/ant-lp-1103-03.JPG
> http://www.navy-radio.com/commsta/greece/LP-ROT-N-MAKRI-01.JPG
>
> Not Wullenwebers -
> The diagonal members are probably supports for an inverted cone
> http://www.navy-radio.com/ant/inc-cone-01.jpg
>
> Nick
>
> Nick England K4NYW
> www.navy-radio.com <http://www.navy-radio.com>
>
>
> On Fri, Jan 24, 2020 at 10:23 AM Duncan Brown 
> <duncanancy at earthlink.net <mailto:duncanancy at earthlink.net>> wrote:
>
>     Looks like HF communications and/or intercept. Most likely US
>     government.
>
>     The towers with big arms are big Log-Periodic, rotatable antennas,
>     probably covering 2-30 Mhz. I've never seen any that big, though.
>
>     Near the center of the site, the big diagonal towers surrounding
>     an LP
>     tower are probably supporting other wire antenna elements.  Sort of
>     reminiscent of the Wullenweber, AN/FLR-9, electrically steered, DF
>     antenna.
>
>     Interesting!
>
>     Duncan
>     K2OEQ
>     USASA
>
>     On 1/23/2020 22:27, E. wrote:
>     > There is something similar near Omaha, Ne… just up the road from
>     me.  I pinned it here on Google Maps:
>     >
>     > https://goo.gl/maps/U9aPS2gFTPcJ3Z8S7
>     >
>     > (check out street view on the road boarding it, to the north)
>     >
>     > I’ve been by it once before and it’s some kind of an antenna
>     array… looks to be a communications arm of the Air Force -
>     possibly associated with Offutt.  Any clue what these antenna
>     arrays could be used for???
>
>
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