[BULK] - Re: [BULK] - Re: [SixClub] re; weak signal

Thu, 18 Mar 2004 10:16:15 -0800

Hi David,

Actually, if you're putting up a wire antenna (as opposed to a rigid dipole
made of tubing), I'd go for something more omnidirectional if possible, like
a loop.  That requires more than just two end supports, but if you can
string it up, a 1-WL loop is only 20 feet in perimeter and needn't be round
(nor square) -- it can be almost any geometric shape from a triangle to a
square to a pentagon, hexagon, octagon -- whatever you can manage, and will
have about 0dBd gain in all directions, or at least in "many" directions,
rather than two.  A rigid loop can also be made (like a "halo"), or a
turnstile may be made of two rigid cris-crossed dipoles.  If you have only
one high support but many possible "lower" end supports, you might consider
an arrangement of multiple wire slopers fed in phase.  All sorts of
possibilities, if you have time, space and a bit of ingenuity....-WB2WIK/6

"Success is the ability to go from failure to failure with no loss of
enthusiasm." -Winston Churchill

> -----Original Message-----
> From:	[email protected] [SMTP:[email protected]]
> Sent:	Thursday, March 18, 2004 10:26 AM
> To:	[email protected]
> Subject:	[BULK] - Re: [BULK] - Re: [SixClub] re; weak signal
> 
> Thanks Steve,
> 
> My house backs on to a natural preserve and the trees their are very high
> but not densely populated! My vertical has been up about four months and
> no-one has noticed it yet (by that I mean the HOA - too many old people
> with
> too much time on their hands, but I digress Hi Hi)
> My dipole has been sitting on the lanai for a while and I have just taken
> it
> indoors. I am wondering if I could string it up between some branches! Now
> as far as direction is concerned, to the west of me I have the Gulf of
> Mexico about so presuambly I want to be radiating North/South otherwise
> East/West will give me the Gulf and the region over to the east coast of
> FL
> ????
> 
> Thanks again
> 
> David
> 
> 
> ----- Original Message ----- 
> From: "Steve Katz" <[email protected]>
> To: <[email protected]>
> Sent: Thursday, March 18, 2004 12:52 PM
> Subject: RE: [BULK] - Re: [SixClub] re; weak signal
> 
> 
> > Problem with a six meter dipole is that it's bidirectional, and per
> Murphy's
> > Law, will always be aimed where stations aren't.  A lower, rotary dipole
> is
> > much handier.  A six meter antenna needs to be sufficiently high to have
> a
> > good view of a distant horizon; however high that is, depends on your
> > particular location and the obstacles you have nearby.  In my
> neighborhood
> > (single story homes, nothing industrial, no tall buildings, and few tall
> > trees), getting a 6m dipole up about 30-40' above ground would be quite
> > adequate.  In places with lots of 60' tall trees, I'd want the antenna
> to
> be
> > above them, so as to not suffer so much foliage attenuation, which can
> be
> > pretty severe at 50 MHz.  -WB2WIK/6
> >
> > "Success is the ability to go from failure to failure with no loss of
> > enthusiasm." -Winston Churchill
> >
> > > -----Original Message-----
> > > From: [email protected] [SMTP:[email protected]]
> > > Sent: Thursday, March 18, 2004 10:03 AM
> > > To: [email protected]
> > > Subject: [BULK] - Re: [SixClub] re; weak signal
> > >
> > > Also, can anyone tell me how high (ideally) I should site my homebrew
> > > dipole? I have antenna restrictions (i.e NONE ALLOWED) but have a
> colinear
> > > vertical up about 60' hidden in a tree. I cant get the dipole up that
> high
> > > but how high is high enough!
> > >
> > > Thanks,
> > > ----- Original Message ----- 
> > > From: <[email protected]>
> > > To: <[email protected]>
> > > Sent: Thursday, March 18, 2004 12:23 PM
> > > Subject: Re: [SixClub] re; weak signal
> > >
> > >
> > > > I thought it was just me! I was on .125 last night and was getting
> S5 -
> > > S9
> > > > noise but it tuned out a bit above and below that frequency. I
> turned
> > > off
> > > > anything that might have been causing interference in my shack but
> to
> no
> > > > avail!
> > > >
> > > >
> > > > ----- Original Message ----- 
> > > > From: "Edward Leicester" <[email protected]>
> > > > To: <[email protected]>
> > > > Sent: Thursday, March 18, 2004 8:39 AM
> > > > Subject: Re: [SixClub] re; weak signal
> > > >
> > > >
> > > > > the last couple of days here on the east coast have been unusual.
> > > there
> > > > have
> > > > > been several ground wave openings lately. from fm16, I've worked
> n3db,
> > > > k3tkj
> > > > > on several occaisions and heard kc8ihe, all up in the MD DE area.
> also
> > > > > worked n4wi in fm14. lots of noise too. not just heterodyne but
> noises
> > > > like
> > > > > AU was trying to make its way south. BPL? Nah. Hertford's too
> small
> > > for
> > > > BPL.
> > > > > Sometimes living in a smal rural area actually has it's
> advantages.
> > > > >
> > > > >
> > > > > 73 de Ed/kg4qmi
> > > > > ---------------------------
> > > > > Edward Leicester
> > > > > EC-Perq. Co.  NCARES
> > > > > Hertford NC/FM16
> > > > > http://home.earthlink.net/~kg4qmi
> > > > > need logging software?
> > > > > go to http://www.n3fjp.com
> > > > >
> > > > > ----- Original Message ----- 
> > > > > From: <[email protected]>
> > > > > To: <[email protected]>
> > > > > Sent: Thursday, March 18, 2004 8:25 AM
> > > > > Subject: Re: [SixClub] re; weak signal
> > > > >
> > > > >
> > > > > > Wonder if you are hearing BPL?????
> > > > > >
> > > > > >
> > > > > > In a message dated 3/18/2004 5:42:52 AM Eastern Standard Time,
> > > > > [email protected] writes:
> > > > > >
> > > > > > > David,
> > > > > > > Despite the well considered negative responses about
> > > > > > > what you heard on 6m last night, there was more going
> > > > > > > on than computer problems under your roof. I was on 6m
> > > > > > > AM with 4 others and the noise on the band led several
> > > > > > > to believe there was a band opening going on or about
> > > > > > > to happen. I switched over to ssb and heard wide
> > > > > > > heterodynes just above 50.125 and directly on 50.150.
> > > > > > > The "signal" on 50.150 had a beacon like rhythm or
> > > > > > > more accurately, CW when you are listening in the
> > > > > > > wrong mode. I can understand why your would think it
> > > > > > > was an opening.
> > > > > > > Mark
> > > > > > > KB1KBP (soon to be K1RGB)
> > > > > > >
> > > > > > > --- David-Hook <[email protected]> wrote:
> > > > > > > > I was listenning in the 50-51mhz range last night
> > > > > > > > and heard all kinds of
> > > > > > > > heterodynes, but no beacons or voices.Can anyone
> > > > > > > > confirm if the band was
> > > > > > > > open?I'm using a homebrew buddipole indoors, so I'm
> > > > > > > > not sure exactly what I
> > > > > > > > was hearing.QTH is CT.
> > > > > > > >
> > > > > > > > David
> > > > > > ______________________________________________________________
> > > > > > SixClub mailing list
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> > > > >
> > > > >
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> > > >
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> > >
> > >
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> 
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