Re: [IRCA] Comments on Wellbrook Array

[WALTER SALMANIW <salmaniw@xxxxxxx>]

Guy, I was able to null 690 CBU around the same amount as you fellas did last Fall, so things are up and running.  One problem I've encountered, though, is that I've blown a couple of 315 mW fuses.  Don't know why when I popped the lid....I unplug it now when not in use.....Walt.

----- Original Message -----
From: Guy Atkins <dx@xxxxxxxxxxxxx>
Date: Friday, August 29, 2008 6:09 pm
Subject: Re: [IRCA] Comments on Wellbrook Array
To: irca@xxxxxxxxxxxxxxxx

> Hi Walt,
> 
> The last time John and I were at Grayland with our 2-loop prototype
> Wellbrook Arrays, we were getting 35-40db nulls from the 
> Portland stations,
> which were closest to being in the null of the rear beam of the 
> NW array.
> This of course is far better than we've had off the back side of 
> Beveragesat Grayland.
> 
> I've heard that Andy has indeed sold  one or more 4-loop, 
> productionWellbrook arrays, so he's up and running. It's an 
> expensive product,
> though... $700+ I believe, and the buyer needs to supply equal 
> length coax
> runs to all four loops.
> 
> Guy Atkins
> Puyallup, WA USA
> www.perseus-sdr.blogspot.com
> 
> 
> 
> ------------------------------
> 
> Message: 6
> Date: Fri, 29 Aug 2008 16:16:24 -0700
> From: WALTER SALMANIW <salmaniw@xxxxxxx>
> Subject: Re: [IRCA] TPs Aug 29 from Orcas Island
> 
> I had a question a week ago from someone asking about the 
> array.? Basically,
> it?s a prototype phasing unit
> using 2 delta loops in a vertical plane, 40 meters apart.? Using 
> the phaser
> box, one is able to phase
> out signals from one direction or 180 degrees.?
> In my case, mine is oriented about 315 degrees towards Asia.? I 
> had noted
> that I wasn?t getting any null to
> the south.? Re-reading the instructions,
> Andy Ilkin advises that one switches the wiring on one of the 
> loops.? Sure
> enough, this solved the problem,
> although I haven?t yet achieved nulls up to 50 dB as Andy 
> claims.? Still,
> even 10 to 20 dB is great.? I don?t think Andy has yet achieved
> production status, but one should check the Wellbrook website in 
> the UK.?
> 
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