Re: [IRCA] Computer Model of Bog

[Tom L Jones <ka1yhi@xxxxxxxx>]

Bob
           Up here in Mason I ran 1000' of fence wire south hanging
it 8' in the trees so I wouldnt cloths-line anyone or thing.  A TIS
in Naraganset RI was in every day. At nite a TIS in VA or MD,
I forgot which was a regular.   WJCC 1700 & WHDP 1620 became
pests & quite listenable most the year. SS stations wiped out
power houses with the slightest aurora.  Tons of new loggings
from the S BUT almost nothing new to W on it.  If I remember
right you got a REAL radio there & a few BOGs would
make a pissa set up.  Fence wire is cheep < $20 for 1/4 mile
but breaks to easy. Find some field phone wire, it will
survive a direct hit from an "88" 
73
Tom Jones
Mason N.H.


On Fri, 22 Dec 2006 17:34:03 -0500 "Bob Young" <youngbob53@xxxxxxx>
writes:
> Pardon my ignorance but what exactly does BOG stand for? Beverage on 
> Ground? 
> These sound pretty good if so, I can't really dig around here too 
> much junk 
> in the woods but could lie two wires on the ground if that's what 
> these are, 
> how exactly do you construct these? How would they compare to two 
> 400' LW's 
> 30-50 ft up in the air?
> 
> Bob Young
> Milllbury, Ma
> 
> 
> >From: "Neil Kazaross" <neilkaz@xxxxxxxxxxxxx>
> >Reply-To: Neil Kazaross <neilkaz@xxxxxxxxxxxxx>,        Mailing 
> list for 
> >the International Radio Club of America<irca@xxxxxxxxxxxxxxxx>
> >To: "Mailing list for the International Radio Club of 
> >America"<irca@xxxxxxxxxxxxxxxx>
> >Subject: Re: [IRCA] Computer Model of Bog
> >Date: Fri, 22 Dec 2006 13:29:59 -0600
> >
> >Hi, Gil..my appologies for not getting back to you sooner about my
> >experiences with BOG's.
> >
> >I don't find it possible to accurately model a BOG with EZNEC since 
> I don't
> >think it properly takes into account the slowing of the velocity of
> >propagation when the wire is on the ground. Additionally, I feel 
> that EZNEC
> >can be a bit squirrelly with wires directly on the ground.
> >
> >However, my experience coincides with the theory and tables I've 
> seen and
> >that is that a BOG has a pattern like a typical Beverage of 
> constant height
> >that is 2.5 times longer. Also since classic Bevs need to slope to 
> ground 
> >at
> >both ends I feel that there are a bit less extranious side lobes 
> with BOGs.
> >An unterminated BOG has a considerably better F/B than does an 
> unterminated
> >Bev. I'd expect the back lobe to be down about 5 or 6 dB midband 
> for a 500
> >ft BOG.  You may find my detailed test results posted here to be
> >interesting.
> >http://www.dxing.info/community/viewtopic.php?t=371
> >
> >Soon after I used my first BOG here, I took down all elevated 
> mini-Bevs and
> >for the most part stopped using KAZ antennas (or anything else with 
> a wide
> >cardiod pattern) because I have much less signal from the sides off 
> BOGs 
> >and
> >can phase 2 of them to get great F/B.
> >
> >A few winters ago, before my property here was torn to shreads in 
> the 
> >middle
> >due to building our new home, I ran a 317 ft W BOG and a 343 ft WSW 
> BOG out
> >my shack's windows. On the regionals and GY's in the upper 3rd of 
> the band,
> >I'd often have totally different stations dominating on the 
> respective 
> >wires
> >and always from near their intended directions. An example was 
> Amarillo on
> >1310 with 88 watts being DXable on the WSW and never had on any 
> other
> >antenna.
> >
> >I can play around with longer BOGs up north at my place in WI.  893 
> feet
> >clearly beats 475 feet on the low end as it is more directive. It 
> also has 
> >a
> >better F/B and thinks like CFRB 1010 come in much better in the day 
> on the
> >longer BOG due to better directivity and also better F/B (less 
> WSPT). For
> >the top end of the band, anything much above 900 ft is too long if 
> the wire
> >is right on the ground since I find that it is too lossy and the 
> pattern
> >starts to deteriorate. Even with several hundred feet you'll note 
> lower
> >signal levels on stuff up near X-band than with shorter wires, but 
> this is
> >OK since directivity is very good.
> >
> >73 KAZ
> >
> >----- Original Message -----
> >From: "Gil Stacy" <gilstacy@xxxxxxxxx>
> >To: "Mailing list for the International Radio Club of America"
> ><irca@xxxxxxxxxxxxxxxx>
> >Sent: Thursday, December 21, 2006 4:54 PM
> >Subject: [IRCA] Computer Model of Bog
> >
> >
> > >I would grateful if someone could either provide me by email or 
> direct me
> > >to
> > > a site that has an Enzec or other computer  simulation of a 500' 
> bog,
> > > unterminated,  and over average ground.  Frequency would be 
> anywhere in
> > > the
> > > MW band.  Thanks.
> > >
> > > 73, Gil NN4CW
> >
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