[Antennas] Krazy Antenna Idea

Wed, 01 May 2002 17:30:28 -0700

Hmmm .  understand I was kinda responding to George's thing about radial
length, and .. as to the carport .. TRY IT!  There are no "cardinal" rules
here .. drat, I am used to having a way bunch more real estate than I am
going to live with for the rest of my life.. just ..   ... .. try it!  You
are not talking about a major investment in time, money, materials, to just
plain TRY IT!  That is, to myself, a major part of Hamming .. been doing
that for 38 years... 73, Mark  AA6DX

----- Original Message -----
From: "Chris BONDE" <[email protected]>
To: "Mark" <[email protected]>
Cc: <[email protected]>
Sent: Wednesday, May 01, 2002 5:14 PM
Subject: Re: [Antennas] Krazy Antenna Idea

> Sorry, Mark, I sorta don't understand what the heck youare saying.
> George said put it on the ground and forget about the elevated carport.
>
> I have abit of land N of the carport to do such, but that is the back
> lawn.  So it might come down to the best of what is available.
>
> Chris opr VE7HCB
>
>
> At 03:42 PM 2002-05-01 -0700, Mark wrote:
> >Ahh .. finally .. the Empower has no clothes  Thanks, George .. that is
such
> >a neatly written response   I have seen hams waller around trying to get
> >their  ground mounted / ground buried  radials laid out to "resonant"
> >frequency .. HAR .. t'ain't there, when you lay that waarrr on/in the
> >ground!   Unless you are laying on silica (sand), and, note even then,
ain't
> >resonant!!!!   Now, not to say a 2 foot radial will work like a 65 foot
> >radial on 75 meters,   BUT ..........   73, Mark .. retired broadcast
> >engineer .. AA6DX
> >----- Original Message -----
> >From: "George, W5YR" <[email protected]>
> >To: "Chris BONDE" <[email protected]>
> >Cc: <[email protected]>
> >Sent: Wednesday, May 01, 2002 2:37 PM
> >Subject: Re: [Antennas] Krazy Antenna Idea
> >
> >
> > > Radials that are in contact with the ground are detuned by the ground
and
> > > need not be resonant. They are there to collect return currents within
> > > about 1/4-wavelength of the base of the antenna. Length is not
critical -
> > > the more the better.
> > >
> > > Radials that are elevated need to be resonant to be effective. That
means
> > > that their length is critical as are their surroundings. They cannot
lay
> >on
> > > something like a carport roof that would detune them. They cannot be
> > > connected to ground or anything except an insulator at the far end.
Snow
> > > will probably detune the radials, perhaps substantially.
> > >
> > > A radial that starts out in the air, runs along a roof and then dives
down
> > > to be connected to ground is not really a radial but an extended
"ground"
> > > wire that is too long to have much effect.
> > >
> > > I see little need to elevate the antenna for 160. Put it on the ground
and
> > > put out as many radials as you can of whatever lengths you can fit
into
> >the
> > > property. More shorter radials are better than fewer longer radials.
Snow
> > > will have little effect.
> > >
> > > I would forget about the carport . . .
> > >
> > > 73/72/oo, George W5YR - the Yellow Rose of Texas
> > > Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
> > > Amateur Radio W5YR, in the 56th year and it just keeps getting better!
> > > QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771 I-LINK 11735
> > > Icom IC-756PRO #02121  Kachina 505 DSP  #91900556  Icom IC-765 #02437
> > >
> > >
> > > Chris BONDE wrote:
> > > >
> > > > I have been planning on being on 160m.  The upper portion, say 1850
to
> >1975.
> > > > I have a carport that runs E-W, that is the length, the mountain to
the
> >N
> > > > fairly well prohibits propagation that way.
> > > >
> > > > If I mount a vertical on the N side of the carport, run the radials
E-W
> >on
> > > > the N edge, S-E and S-W to the diagonal corners, and, S on the
width,
> >with
> > > > possibly, the radials from the N wrapping along the edge to join the
> > > > diagonals which could go to the ground and be grounded, along with
the
> > > > width N-S going to ground over the edge.  This is the first question
how
> > > > would that work for the radial system?  How would the snow on the
roof
> >of
> > > > the car port, up to 4ft deep, dry and wet, influence the radials
plus
> >the
> > > > antenna.  Now that is something else.
> > > >
> > > > __________________O________________________
> > > > !                                   / |
> > > > \                                              |
> > > > |                                  /   |  \
> > > >             |
> > > > etc
> > > > Any comments on this radial system?
> > > >
> > > > Chris opr VE7HCB
> > > - - -
> > >
> > > Your moderator for this list is:
> > > Larry Wilson KE1HZ [email protected]
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> > >
>
>
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