Bruce,
Did you sweep from say the AM band up to 40M to find the null? Was the null
pronounced? I assume as you shortened the wire you hooked up to a terminating
resistor and repositioned the ground rod?
Tnx
N2TK, Tony
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of K1FZ-Bruce
Sent: Sunday, October 23, 2016 3:02 PM
To: Art Snapper <art@nk8x.net>; Topband <topband@contesting.com>
Subject: Topband: : how to check a BOG
I purchased a MFJ 5014 noise generator for $ 39.95 (it took awhile to get
here, think they build to order.)
At Mid-day time to reduce interference, set it way out, with about 20 feet of
wire sitting on the ground in the direction of the BOG null.
Tuned frequencies on the receiver to find minimum signal, trimmed the BOG wire
to bring the null into 160 meters.
"Worked like a charm"
73'
Bruce-k1fz
http://www.qsl.net/k1fz/bogantennanotes/
On Sun, 23 Oct 2016 13:57:41 -0400, Art Snapper wrote:
I took a hint from Luis HC1PF. A small 1.8+/- clock oscillator and a
wire attached to a pole is what he used.
I found said oscillator on eBay.
It worked, but I am not sure the near field results should be taken for
granted.
73
Art NK8X
p.s. Still trying to figure out the computer problem that plagued me during the
SP, and is gone now!
On Sun, Oct 23, 2016 at 12:53 PM, Bob K6UJ wrote:
> How do you plot the directivity of your BOG ?
> I am toying with the idea of either transmitting from my car HF rig
> (milliwatt sig) and plotting the pattern from diff directions or is it
> possible to transmit with the BOG with a real low milliwatt sig ? I
> was thinking then I could drive around with my HF rig in the car in
> about a half mile radius and see if I could plot the pattern. This
> might not be doable, but thought I would throw it out there.
> How do you test your BOG ?
>
> Bob
> K6UJ
>
>
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