Horizontal and Vertical antennas
gfiber1952 at gmail.com
Tue Oct 23 08:54:17 PDT 2018
That is quite a difference. I had a long wire up one here but the wire
was lower than the front part of the lot due to the back being on a hill.
On 10/23/2018 8:06 AM, Ken Koster wrote:
> One of the many topics at the Saturday breakfast lately has been
> simple HF antennas for locations like mine or WA7NWPs where we aren't
> putting up towers and lots of wires but still want to get on HF
> I have a vertical (CH-250B) but while it works ok on 20M the noise
> floor (remember it's a vertical) is terrible on 75/40M. I've been
> talking for a while about putting up an untuned end-fed wire again and
> Bill has been thinking about one of the MFJ end-fed ones.
> I finally got around to throwing up something this last weekend. I
> used an old 1-1 balun that I rewound to 9-1 and strung up a 50' chunk
> of wire with about 25' of counterpoise (all I had handy). It's going
> to go higher but right now it's only about 8' off the ground and fed
> with about 50' of RG8x and my MFJ antenna tuner.
> The difference?...Take a look.
> The screen shots are of my Anan10 SDR rig on 75M. The right most shot
> is on the vertical and shows the high noise level on the spectrum
> display. The waterfall shows a horizontal line where I switched from
> horizontal to vertical and you can see many of the signals just
> disappear. The left most shot is on the horizontal wire. Lots of
> signals and the noise level is down about two S units.
> Results on 40M are about the same and even on 20M there is about one
> unit difference.
> Before, 40M was unusable because I never heard anything.
> After, it's fine and first light on the antenna was a 5-7 report from
> VE6AO in Calgary.
> Now to take the time to make it longer and pull it up a bit higher and
> mount it more securely.
> Ken - N7IPB
> Email: n7ipb at wetnet.net
> JID: n7ipb at jabber.wetnet.net
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> “Contrariwise,' continued Tweedledee, 'if it was so, it might be;
> and if it were so, it would be; but as it isn't, it ain't. That's logic.”
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Gary Fiber K8IZ
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