[Lowfer] Completed a worthwhile project today

[Andy - KU4XR]

 Good day Jay:
 
 Well the ground is still very much saturated, but not
 supposed to rain this week, so I expect to see it change 
 as things dry out. 
 Right now it has settled in at 26.8 V @ .040 A for 1.072 W
 The RF current is up to 190 mAmps. It will peg the meter
 soon, it only goes to 200 mAmps. I still haven't got to check
 the accuracy of the Ammeter yet, ( worked on another project )
 hi !
 Present readings indicate antenna resistance to be at 
 29.69 Ohms.
 
 Thanks for the tips you have given, and the calculations.
 
 Major projects ahead include; getting the antenna as high
 as I can go, which is about 6 more feet. And rewinding the 
 coil with larger wire.
 
 Question ::: I'm not using any type of matching transformer,
 or tapping the coil for thr PA. When I rewind with #14
 wire, do I need to put tap points on the PA side ?? 
 Right now I'm just going straight from the output filter 
 into the coil.
 
 73 to all :::
 
 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
 
 
> --- On Mon, 11/2/09, jrusgrove at comcast.net
> <jrusgrove at comcast.net>
> wrote:
> 
> > From: jrusgrove at comcast.net
> <jrusgrove at comcast.net>
> > Subject: Re: [Lowfer] Completed a worthwhile project
> today
> > To: ku4xr at yahoo.com
> > Date: Monday, November 2, 2009, 6:07 AM
> > Andy
> > 
> > Sounds like you're making good progress.
> > 
> > Now that you have a good adjustable power supply what
> are
> > you seeing for voltage and current for 1 
> > watt draw from the power supply? Inquiring minds want
> to
> > know!
> > 
> > Jay
> > 
> > 
> > ----- Original Message ----- 
> > From: "Andy - KU4XR" <ku4xr at yahoo.com>
> > To: <lowfer at mailman.qth.net>;
> > "Part-15 Yahoo" <part15 at yahoogroups.com>
> > Sent: Sunday, November 01, 2009 6:22 PM
> > Subject: [Lowfer] Completed a worthwhile project
> today
> > 
> > 
> > > Hi all:
> > >
> > > I constructed a variable voltage control for the
> PA
> > voltage on
> > > " XR " today. MAN what a difference !! Once I
> found
> > the
> > > " sweet spot " that the transistors wanted from
> the
> > Osc. drive
> > > level and the PA voltage, Everything settled
> down, and
> > appears
> > > to be happy now. No jumpy current, RF mAmps pops
> right
> > up and
> > > stays solid. The only fluctuation is when the
> wind
> > blows the
> > > ant. then it will move around a small bit.
> Nothing
> > like before
> > > though. Tuning is not totally erratic, but nice
> and
> > smooth when
> > > I twist the tuning shaft on the Variometer. Now
> if the
> > ground
> > > will dry up some, I might be able to get some RF
> up
> > the ant.
> > >
> > >
> > > Andy - KU4XR - EM75xr - Friendsville, TN.
> > > LOWfer Beacon " XR " @ 185.29893 KHz ( QRSS-60 )
> > > Coordinates:  N:  35* 43' 54" - W:  84*
> > 3' 16"
> > > http://www.myspace.com/beaconxr
> > >
> > >
> > >
> > >
> >
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> 
> 
> 
>