Re: [IRCA] Shorter BOGs

["Neil Kazaross" <neilkaz@xxxxxxxxxxxxx>]

Russ,

You wouldn't want to do anything to the phase wire to make it less directive 
IMHO or you'd risk messing up the combo of the two when you phase null ie 
lots of side QRM introduced. As it is, a 100 ft BOG has quite a wide beam, 
FMI, and I think you'd do better on LBI with at least a 300 ft BOG as a 
phase antenna and make it // the main BOG(s).

73 KAZ about to take a mosquito repellant shower (I keep a repellant soaked 
T-shirt handy) and do a little work on his new northward Phased BOG system 
as far as getting the wires directly on the ground (they pass thru some 
vegatation and then a bit of wood and then along a path) and finding one 
ground rod along the center side of my land here.

73 KAZ Barrington IL

----- Original Message ----- 
From: "Russ Edmunds" <wb2bjh@xxxxxxxxx>
To: "Mailing list for the International Radio Club of America" 
<irca@xxxxxxxxxxxxxxxx>
Sent: Wednesday, September 19, 2007 11:03 AM
Subject: Re: [IRCA] Shorter BOGs


>
> --- Craig Healy <bubba@xxxxxxxxxxxxxxxxxxxx> wrote:
>
>> > I can nicely phase southerly QRM..ie made Winnipeg rather dominant
>> on 1290
>> > etc etc. Unfortunately the longest I can get is about 295 ft or so
>> but
>> this
>> > will still be fine for the high end.
>>
>> In Victor Misek's book he shows a shortened wire antenna.  It was
>> done by
>> setting it out in a zigzag fashion.  The wire length was pretty long,
>> but it
>> didn't take as much real estate.  If the BOG were run in a zigzag
>> fashion
>> across the field, I wonder if it would approximate a longer antenna?
>> Another way might be to use cotton clothesline rope.  Then just loop
>> the
>> wire up so some sagged down.  Probably could get a thousand feet of
>> wire in
>> a couple hundred feet or so of land.  Loaded antennas are common in
>> verticals, so maybe the same sort of thing could work in a horizontal
>> wire.
>>
>
>
> I could see running the phase wire that way. I would anticipate a
> reduction in the tightness of the directional pattern doing that with
> the BOG itself.
>
> Russ Edmunds
> Blue Bell, PA ( 360' ASL )
> [15 mi NNW of Philadelphia]
> 40:08:45N; 75:16:04W, Grid FN20id
> <wb2bjh@xxxxxxxxx>
> FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15'
> AM: Hammarlund HQ-150 & 4' FET air core loop
>
>

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