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Re: [IRCA] BOG question
- Subject: Re: [IRCA] BOG question
- From: STEVE <ratzlaffsteve@xxxxxxxxx>
- Date: Wed, 7 Nov 2018 21:37:30 -0700
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The John Bryant article on "over the shoulder" can be found at:
<http://www.dxing.info/equipment/over_your_shoulder_bryant.dx>
He does not test BOGs in his article, though.
As a probably unrelated note, when I lived at the rural place in Oregon
I had a 1600' E/W unterminated longwire that received "over the
shoulder" in the west direction. That was the only implementation I
could construct. My main interest was Pacific LF NDBs (from the west),
thus everything was "over the shoulder". I routinely received faint
Pacific NDBs with that setup and it was the very best Pacific LF antenna
I've ever had the pleasure of using. Of course I had nothing I could
compare with a regular west-pointed antenna of comparable length so I'll
never know how much better such an antenna might have been.
73,
Steve AA7U
On 11/7/2018 5:29 PM, Chuck Hutton wrote:
Nick -
Hoping I remember all the details correctly as I don't have time right now to re-read things....
Luis has put this data on the web before and claimed "resonance". Someone then educated him that current peaks and resonance are not synonyms,
My recollection is that the subject of current peaks was well covered and analyzed by Beverage in his 1923 AIEE paper.
I see no reference to Beverage's work so assume Luis did not explore that area. I saw no numbers to serve as a basis for "resonance" - some L and C values would be helpful.
But we stray from the original question : how much loss is there in a non-terminated BOG / Beverage? Some have compared "over the shoulder" versus normal wires, including John Bryant. Assuming I recall correctly, he found that over the shoulder had some feasibility as the loss was some 5 to 10 dB.
Chuck
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