[Lowfer] Big round coil hanging in the air

[Andy - KU4XR]

Thanks Jay:

It has been raining steadily, and sometimes heavy overnight,
and still coming down. When I got up to come to work, I 
looked at the RF meter, and it was still laying right at
200 mAmps with the ground absolutely soaked. No Power Drop !!
due to the wet ground. THAT, in itself is a vast improvement.

Thanks for looking, and Have a wonderful day !!!



Andy - KU4XR - EM75xr - Friendsville, TN.
LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
http://www.myspace.com/beaconxr
http://webpages.charter.net/ku4xr/
***   http://webpages.charter.net/ku4xr/the%20death%20of%20ie-6.jpg   ***
****    http://webpages.charter.net/ku4xr/You%20Tube%20Notice.jpg     ****


--- On Thu, 12/31/09, jrusgrove at comcast.net <jrusgrove at comcast.net> wrote:

> From: jrusgrove at comcast.net <jrusgrove at comcast.net>
> Subject: Re: [Lowfer] Big round coil hanging in the air
> To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" <lowfer at mailman.qth.net>
> Date: Thursday, December 31, 2009, 8:07 AM
> Andy
> 
> Ran captures on the watering hole looking at your loading
> coil change. Hard to document any 
> difference as conditions vary a fair amount night to night.
> Signal strength looking good, as it 
> normally does, since your improvements a month or so back.
> 
> http://www.w1vd.com/capture/MPXRCV123109.jpg
> 
> Jay W1VD  WD2XNS  WE2XGR/2
> 
> 
> ----- Original Message ----- 
> From: "Andy - KU4XR" <ku4xr at yahoo.com>
> To: <lowfer at mailman.qth.net>;
> "Part-15 Yahoo" <part15 at yahoogroups.com>
> Sent: Wednesday, December 30, 2009 7:26 PM
> Subject: [Lowfer] Big round coil hanging in the air
> 
> 
> > Hi All:
> >
> > In a hasty rush to try to beat the rain, and darkness,
> I managed
> > to quickly wind a center loading coil for the " XR "
> antenna.
> > I had about 1 hour of daylight, but got it up there.
> One thing
> > that I caught too late to change, ( dark, and now
> raining ), is
> > that I installed the coil Upside Down, meaning that
> the coil
> > windings are going in the oposite direction of the
> Variometer
> > windings. Past experience has shown this to " Buck "
> against any
> > existing Inductance. I may or may not have helped my
> signal by
> > doing that, but when it isn't raining, and I have
> daylight; I
> > will turn it over so all the windings are going in the
> same
> > direction.  ****  Some details  ****
> >
> > The loading coil is about 4 feet above the roofline of
> my
> > mobile home. My hope is to pull some extra current up
> the
> > vertical, and away from the side of the trailer. I
> hope it works.
> > I'm not sure how to take the meter readings I'm seeing
> now
> > on my TS450 meter, and my FS meter, as well as the RF
> current
> > meter. When I did my antenna project in Nov. I added 5
> feet in
> > height, and extra top-hat wires. The RF current went
> up, but
> > the FS, and radio meters both dropped in reading. I'm
> sure they
> > are reading " Near Field Voltages " ( The radio only
> has a
> > 4 foot coax jumper connected ), and as has been shown
> by captures
> > afterwards; the signal improved over the RF pathway.
> NOW; after
> > adding the coil, upside down though; The RF current
> has now
> > pegged the 200 mAmp meter scale, that's as high as she
> will read.
> > And same as before; the FS, and radio meters dropped
> even further.
> > I'm hopeing that's a good thing, and that more RF is
> actually
> > radiating from the top of the antenna.
> >
> > My present measured readings are:
> >
> > PA Volts = 27 vdc ; PA Current = 37 mAmps ; Power is
> .999 Watts
> > and the RF Current meter as stated is 200 mAmps
> >
> > Loading Coil details:
> >
> > Diameter = 6.5" ; Winding length = 4" ; Turns = 26
> with #10 AWG
> > stranded insulated wire ; Coil Inductance = 88 uH ;
> > Resistance = 1.1 Ohm ; unable to measure the
> distributed
> > Capacitance on my LCR meter.
> > Coil form = A red plastic Folgers coffee can ( coffee
> enjoyed )
> >
> > I'll see how it does for a few days with the Loading
> Coil as I
> > consider it , " Upside down " , then I'll turn it over
> and see
> > what happens then.  **  Lots of cut and try
> at LF  **
> >
> > 73 for noe all; and HNY to you also :::
> >
> >
> > Andy - KU4XR - EM75xr - Friendsville, TN.
> > LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
> > Coordinates:  N:  35* 43' 54" - W:  84*
> 3' 16"
> > http://www.myspace.com/beaconxr
> > http://webpages.charter.net/ku4xr/
> > ***   http://webpages.charter.net/ku4xr/the%20death%20of%20ie-6.jpg   ***
> > ****    http://webpages.charter.net/ku4xr/You%20Tube%20Notice.jpg 
>    ****
> >
> >
> >
> >
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