[Lowfer] Finally completed my LOWfer Variometer
Douglas D. Williams
kb4oer at gmail.com
Mon Sep 22 12:13:21 EDT 2008
Andy,
I have you Q5 copy at 11:00am here in Watauga, TN. We are about 150
miles apart, so good job on your new coil! I never could get any copy
with your previous coil, so your new one is a huge improvement.
http://i81.photobucket.com/albums/j231/Goranothos/cap00011.jpg
-Doug KB4OER
On Sun, Sep 21, 2008 at 8:26 PM, Andy - KU4XR <ku4xr at yahoo.com> wrote:
> Hello LOWfers:
>
> I finally finished constructing my LOWfer variometer for Beacon " XR ".
> I have it sitting in my floor next to the window where the beacon feedline comes in. I had no idea how much inductance I would need, so I just put tap points in a few places, and started winding the wire until I ran out of paint bucket. The inductance ended up at peak being 5.88mH and at dip, 3.28mH. I connected it in the line using the end tap points, and
> set the beacon to tune mode. My output was almost nothing, so I gave the handle a crank, and watched my field strength indicator start to rise, then it pegged the meter, and I got kinda excited. But with the meter pegged, I couldn't tell when I had it peaked, so I turned on my scope and used it to peak the output. I changed the taps around until I found the
> highest output when peaked, and all I can say is: WOW !!! what a difference it made. Using the meter reading on my TS450S with the ant. disconnected, I had been getting an S-9 reading, it is now 25dB over S-9. That should make a little bit of difference on the air.
> Now, as long as the Yellowjackets And I can stay friends, The next step is to continue putting down some more radials.
>
> 73, and good LOWfer-ing; Andy - KU4XR - EM75xr - Friendsville, TN.
>
>
>
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