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Fw: [RTTY] Off Topic - Need Advice on Receiving Antenna for 80M

To: <rtty@contesting.com>
Subject: Fw: [RTTY] Off Topic - Need Advice on Receiving Antenna for 80M
From: Robert Webb" <g0urr@btopenworld.com (Robert Webb)
Date: Fri, 7 Sep 2001 08:32:03 +0100
Snakes and Alligators eh, there had to be a down side, i  will stick with
fat pigeons bending the beam thanks.
Robert Webb ( G0URR )
----- Original Message -----
From: "Barry " <w2up@mindspring.com>
To: "Hill, Don" <dhill@cprk.com>; "RTTY Reflector (E-mail)"
<rtty@contesting.com>
Sent: Thursday, September 06, 2001 9:20 PM
Subject: Re: [RTTY] Off Topic - Need Advice on Receiving Antenna for 80M


> Hi Don,
> During the winter season, I install 2 Beverages - a 600 ft one to EU,
> and a 400 Ft West Beverage. They work VERY well on 160, pretty
> well on 80, once in a while useful on 40 (during storms), and
> useless for higher bands.
>
> I've never used one in CQWW RTTY only because the field I run the
> wires across still has corn planted in Sept (bummer!) It's an anuual
> ritual for me in November, though
>
> Best book on the subject is ON4UN's book on low band DXing. To
> sum it up in a nutshell, you need a ~450 ohm load on the far end
> (from wire to ground) and a 9:1 transformer on the close end to
> which you connect your coax.  It would be better a little higher, like
> 6-10 ft for 2 reasons:
> First, if any people or animals happen by, it's better above their
> heads. Second, the impedance changes as you go up or down (I
> forget which way it goes) and you may need to modify your load
> and transformer.
>
> They say Beverages work best over poor ground, so your swamp
> may not be ideal, but better than nothing. I use Beverage
> transfomers from ICE. They are also available from other sources
> (K1FZ for one).
>
> If you need any other info, drop me a line. It may also be helpful to
> review the archives of the Top Band reflector. I'm sure this subject
> has been discussed ad nauseum.
>
> Also, with SO2R (is that a dirty word here?), I use a bandpass filter
> on my Beverages to prevent overload of radio 2 (listening on
> Beverage)  while radio 1 is xmtg.
>
> 73,
> Barry W2UP
>
>
> On 6 Sep 01, Hill, Don wrote:
>
> > Sorry if this is a little off-topic, but for this year's CQWW RTTY DX
> > Contest,
> > I would like to use a better receiving antenna for 80M.
> >
> > I have received several reports from stations in EU that I have a decent
> > 80M signal when I am low power (approx. 80W output to an inverted V with
> > apex at 60 ft.)  So my little homebrew wire antenna seems to transmit
> > fine, but it does not receive well.
> >
> > Behind my house, someone cleared out all the trees in a very big stretch
> > of land (probably about 2 miles by 1/2" mile swath).  I think one day
they
> > will
> > build a road back there, but for now it's nothing but swamp land with
weeds
> > 4' high in mud and swamp water.
> >
> > I've read about beverage antennas and still don't understand them, but I
> > was wondering if I ran say, 500' of wire out into this swamp and somehow
> > elevated it 3 or 4' off the ground, would it be a very good receive
antenna
> > for 80 meters?
> >
> > Could I just run some RG8 coax to edge of my land, terminate the shield
> > to a ground rod and connect the center conductor to the 500' of wire,
would
> > that work OK?
> >
> > The problem I have is that I only want to make one trip, and one trip
only,
> > into that swamp.  Luckily I have my waders out for next weekend's
> > opening of Teal Season, but with the possibilities of snakes and
alligators
> > in the lurks, I dread going out there at all.
> >
> > Any suggestions?
> >
> > Thanks, Don AA5AU
> >
> >
> >
> > _______________________________________________
> > RTTY mailing list
> > RTTY@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rtty
>
>
> --
> Barry Kutner, W2UP              Internet: w2up@mindspring.com
> Newtown, PA                     Frankford Radio Club
>
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