Wished I had some eggnog. May get some. Meant to type impedance ratio.
Thanks for correction !
. 73
'Bruce
On Wed, 24 Dec 2014 10:25:39 -0500, kd9sv <kd9sv@comcast.net> wrote:
Bruce, you been in the eggnog too early...you are giving impedance
transformation ratios and not winding ratios...de gary, kd9sv
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of
k1fz@myfairpoint.net
Sent: Wednesday, December 24, 2014 10:13 AM
To: Topband
Subject: Topband: BOG talk
Have had inquires about self termination of BOG antennas. *It varies with
the type of soil, moisture content, and length of the wire relative to the
ground.
Question #1
My BOG is directional, in the direction of the wire without a resistor,
then why bother with one?
Good Question- Unless you are lucky the terminating resistance and
reactance will be less than ideal.
* I would rather have a 200 foot BOG with a 200 to 250 ohm termination
resistor at the far end for 160 meters.
Two 470 ohm resistors in parallel equals 235 ohms and works well..
75 ohm coax users can transform to 225 ohms with a x 3 turns transformer
ratio.
50 ohm coax users can transform to 250 ohms with a x 5 turn transformer
ratio..
Question #2
I can understand why some want an incognito antenna, but I have above
ground Beverages, why would I want a BOG ?
* Well I have above ground Beverages too, but there are times the BOG "out
shines" other antennas, like with QRN when a storm front is approaching.
Not sure why, maybe angle of radiation , but 'what ever Beverage antennas
do' in this case the BOG often does it better..
In general the BOG is not as good as a Long Beverage antenna, but every
antenna has its day.
73
Bruce-K1FZ
www.qsl.net/k1fz/bogantennanotes/index.html
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