Re: [IRCA] Puyallup, WA Ultralight TP's for 9-7

[D1028Gary@xxxxxxx]

Hi Guy,
 
Thanks for your generous comments (about generous-sized loops).
 
In answer to your question, it's rarely necessary to null pest stations  
when chasing TP's in Puyallup, since almost all the west coast QRM (Vancouver, 
 Seattle, California, etc.) is around 90 degrees separated from the usual 
TP  bearing of 300 degrees. This is a lucky accident of geography, but I'll  
take it :-)  The only time it's really necessary to carefully null a west  
coast pest is when you try for TP-DX on a frequency like 630, 720, 810, etc., 
 where domestic stations share frequencies with TP's. Then it's very  
important to get the null as precise as possible.
 
The situation is completely different when chasing DU's on the coast,  
however. Seattle and Portland were exactly on the back side of the figure-8  
pattern PVC loops when chasing Australia and New Zealand during the Lincoln  
City trips, and there was no way to null the pests. It was necessary to tune 
the  PVC loop (and Slider loopstick) repeatedly, to minimize splatter from  
the pests. Together, these two additional tuned circuits made a big  
difference in the results from the August 20-22 trip.
 
73, Gary
 
  
 
 
In a message dated 9/8/2010 11:08:43 A.M. Pacific Daylight Time,  
dx@xxxxxxxxxxxxx writes:

I can  give a big "ditto" to Gary's comments. His large PVC loops are
impressive  and imposing! Only rural DXers can expect to use these monsters
without the  paranoia of who might be watching / frowning / disapproving.

Nick, if  you don't necessarily want to rotate such a large loop for 
nulling,
but can  make do with a fixed position, you could greatly lessen the visual
impact.  Support ropes attaching to two trees or buildings, plus two stakes
to the  ground, could tension spreaders that keep the loop's turns in
alignment and  elevated. A single E-W loop could inductively couple to ULRs
for both DUs  and TPs if you're willing to give up loop rotation  for
nulling.

Gary, do you regularly null local pests when DXing with  the giant air core
loops, or does this take too much time during the short  time frame of dawn
enhancement when you're chasing foreign  signals?

Guy Atkins
Puyallup,  WA
http://fivebelow.squarespace.com




> Date: Wed, 8  Sep 2010 01:19:02 EDT
> From: D1028Gary@xxxxxxx
> To:  irca@xxxxxxxxxxxxxxxx
> Subject: Re: [IRCA] Puyallup, WA Ultralight TP's  for 9-7
> Message-ID: <711be.432d94b2.39b876c6@xxxxxxx>
>  Content-Type: text/plain; charset="US-ASCII"
>
> Hi  Nick,
>
> Before really considering one of these large PVC loops  you may wish to 
give
>  fair warning to your wife and neighbors,  since the fixture is certain to
> become  a permanent part of your  back yard. Perhaps the reason why my 
sole
> neighbor let  his house  go into foreclosure was because he wasn't 
thrilled
> with  the  "scenery" across the fence :-)
>
> 73,  Gary
>
>
>
>
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