My BOG was a breakthrough after previously using just my inverted L on receive.
Its 300 feet fed through a 300 Ohm transformer. The transformer is grounded,
but not the far end.
In the last week I added a Wellbrook loop which earned its place as my primary
receive antenna in the Stew Perry after a bunch of side by side comparisons.
The loop is much higher gain. It can be rotated but I wasn't set up to do so.
The loop has slightly more noise than the BOG but way less than the transmit
antenna. I've used one before in a different location, and find these to be an
under appreciated option.
On Dec 30, 2012, at 10:40 PM, "Bruce" <email@example.com> wrote:
> 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.
> ----- Original Message -----
> From: Guy Olinger K2AV
> To: Charlie Cunningham
> Cc: Bruce ; firstname.lastname@example.org
> 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
> Stew Perry Topband Distance Challenge coming on December 29th.
Stew Perry Topband Distance Challenge coming on December 29th.