[SBE-89-Alaska] [EXTERNAL] Re: HARRP

[Stephen Lockwood]

They did.   They use NEC4 (if I remember correctly).  It is just classic 
array physics - just big at these frequencies.  The physics is the same 
for the nifty flat panel radar arrays or curtain dipole arrays like we 
use in HF broadcasting.  They just have some very cool software to 
change the transmitter exciters to provide beam steering, circular 
polarization, and lots of other cool stuff.  Each dipole has its own 
transmitter.  180 cross dipoles with 360 10 kW transmitters.

Stephen S. Lockwood, P.E., PMP, President
Hatfield & Dawson Consulting Engineers
9500 Greenwood Ave N, Seattle, WA 98103
Phone 206 783 9151 ext 562 - Mobile 206 399 9440 -www.hatdaw.com

On 7/30/2024 9:44 AM, Pearson, Ron wrote:
>
> Hello Stephen,
>
> Was it awesome, did they go over finite element (MOM) models and 
> programming on how the array was built and modeled and the conceptual 
> motivation for the design?
>
> Thank you 😊
>
> Ron
>
> *From:*SBE-89-alaska <sbe-89-alaska-bounces at sea.sbe16.org> *On Behalf 
> Of *Stephen Lockwood via SBE-89-alaska
> *Sent:* Wednesday, July 24, 2024 7:11 AM
> *To:* Pierre Lonewolf <lonewolf at otz.net>; SBE Chapter 89 Alaska 
> <sbe-89-alaska at sea.sbe16.org>
> *Subject:* [EXTERNAL] Re: [SBE-89-Alaska] HARRP
>
> Did you find a ride?
>
> Stephen Lockwood
>
> On Jul 21, 2024, at 19:41, Pierre Lonewolf via SBE-89-alaska 
> <sbe-89-alaska at sea.sbe16.org> wrote:
>
>     Is anyone from Anchorage driving to the HARRP tour? I finally looked at the map and why am I going to Fairbanks!?
>
>     Pierre Lonewolf
>     PO Box 983
>     393B Whittier Street
>     Kotzebue, Alaska 99753-0983
>
>     19074120859 cell
>     19074423603 fax
>     Lonewolf at otz.net
>     Plonewolf55 at gmail.com
>
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