BOG antenna, BOG wire.
Yes right on. Not only are there many variables with the earth, but different
wire dielectrics are a big factor.
I have sold many BOG transformers, and received a lot of feedback. There are
many different results, all but one was able to get a positive out come. That
one insisted on using a TV antenna pre-amplifier. I gained a lot of insight.
One un-named customer was running his BOG across a highway late many nights.
One night a car came, out of nowhere, at high speed just before he got the wire
secured. It ripped the transformer wire out of his hand. He found it about 200
yards down the road. He never found the termination, thought to be attached to
the car. Someone must have found it and wondered, What is this?
Now that is real determination to work 160 meter DX.
Anyway, I do not disagree with anyone with different BOG results. There are
way too many variables.
73
Bruce-K1FZ
----- Original Message -----
From: Guy Olinger K2AV
To: Charlie Cunningham
Cc: Bruce ; topband@contesting.com
Sent: Sunday, December 30, 2012 5:53 PM
Subject: Re: Topband: Fw: Short Bogs
The characteristics of #12 THHN and such vary all over the map. It is not
being made for use at RF. The insulation not only changes the velocity factor,
but it also adds loss. This too varies all over the map.
Wireman has various wires with UV resistant black PE insulation. That stuff
seems to be predictable and stable. I personally don't know of any THHN with
PE insulation. YMMV, of course. Neither of the guys at Home Depot and Lowes
have any idea what I'm talking about if I mention PE insulation. Apparently
plastic is plastic :>).
73, Guy
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Stew Perry Topband Distance Challenge coming on December 29th.
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