[Lowfer] WM "scribbling" is back in full swing

[rick kirby]

Hi Bill,
 Its funny you mention the change  in loop current.I was just mentioning 
this to the guys 2 days ago. I fired up "PBO" last weekend.I had only 1 
solid report and I havent had a chance to go check the antenna current 
consistantly. But I have seen the input current(monitored in the shack) go 
from 38 ma in the day up to 45 ma( full power) at night! We have about 1-2 
inches of snow left here .
 As you know ;I am running your final and loop and xfrmr setup.I live in the 
Pocono Mtns. so I have no ground to speak of.
 This wekend I hope to move one of the vertical legs a little further from 
the support tree.Seems its moved to within a foot of it.Also ; because of 
sag , the lower horizontal leg is only 5 feet off the ground.
 One thing I wanted to ask you- I am feeding the loop in the lower corner 
because of convienience. Have you noticed a difference in feeding in center 
as opposed to the corner.I checked it with EZNEC and the plot looked the 
same.
 Well hopefully this weekend Ill get it figured out. I was expecting a few 
more reports so something must be going on from the xfrmr secondary  out.

       73
              Rick  KA2PBO
"PBO" 187.2 khz     QRSS60



----- Original Message ----- 
From: "Bill Ashlock" <ashlockw at hotmail.com>
To: <lowfer at mailman.qth.net>
Sent: Thursday, January 14, 2010 8:42 PM
Subject: [Lowfer] WM "scribbling" is back in full swing


>
> Jay and fellow Lowfers,
>
> Thanks for posting this, Jay..... and sorry for the scribbling. Haven't 
> been reprimanded for this art-form since kindergarten :)
>
> In case anyone does not know what is going on at 185.300, like last 
> winter, I am running #12ga 200ft perimeter loop antennas from Andover, MA 
> and from Ellsworth, NH - both at 1W. The Andover soil is classified as 
> "poor" and Ellsworth soil is "very poor".... and in fact this mountainous, 
> rocky soil is close to being not conductive at all. While the loss in the 
> loop, itself, from the ground eating up some of the field, is less in 
> Ellsworth it is likely that the effective radiation from the loop is much 
> poorer. This is evident from the approx -6db comparison to the Andover 
> signal from most receiving sites.
>
> Last night around midnight I turned on WM, Ellsworth and it came right up, 
> save a slight problem with getting enough range out of the tuning 
> capacitor in final below the loop. Seems the loop has actually gained some 
> inductance from laying idle for a year(?) I corrected the problem this 
> morning but another problem is that the input current to the final is low 
> by about 20% from last year. Funny how that when nightfall approached, 
> tonight, the current went up about 10% (and I can remember this affect 
> from last year). I don't see this effect on virtually the same loop in 
> Andover. Will make some measurements on the final to see if anything is 
> changing, there. Otherwise it must be an effect from the tree sap or the 
> snow or the temp of the ground underneath the loop. Has anyone seen this 
> much change in current on their loop?
>
> Plans for the next few weeks include making comparisons between the two 
> signals so any and all signal reports will be appreciated. Currently the 
> Ellsworth WM is located below the Andover signal at ~184.996 while the 
> Andoverver Wm is at ~ 185.304. Another identifier is that the "m" is from 
> Andover is smaller than the "M" from Ellsworth.
>
> Bill
>
>
>
>> From: jrusgrove at comcast.net
>> To: lowfer at mailman.qth.net
>> Date: Thu, 14 Jan 2010 17:49:22 -0500
>> Subject: [Lowfer] XR dogbones this morning
>>
>> Andy
>>
>> About the best copy of XR so far...don't know if you've made more changes 
>> or conditions were good.
>> Solid copy from midnight on with dogbones toward morning. Would be a nice 
>> looking capture if someone
>> hadn't scribbled all over the waterfall ;~)
>>
>> Jay
>
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