[Lowfer] Finally completed my LOWfer Variometer

[Douglas D. Williams]

Good deal! I'll be listening for you. For some reason (memory lapse?)
I had my receiver turned off last night, but it's back on now.

Another trick for tuning is to connect one lead of an NE2 (I
think...., anyway, the tiny one) neon bulb to the hot end of the coil
and tune for maximum brightness.

Hey, even as I am typing this I see what must be an "R" Oh, well. I'm
off to work. I'll leave it capturing while I'm gone.



-Doug


On 9/21/08, 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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