[TowerTalk] Slopers, half slopers, (using the tower)

[kk9a at arrl.net]

That makes sense.  I should have mentioned that the gain would be in the
direction of the sloper.   I just checked ON4UN's book and it states the
antenna can have 10-15dB F/B over a poor ground and no more than a few dB
F/B over an excellent ground.  The antenna is essentially a vertical with a
lot of high angle radiation from the wire portion of the antenna..


----- Original Message -----
From: "Doug Renwick" <ve5ra at sasktel.net>
To: <towertalk at contesting.com>
Sent: Sunday, September 26, 2004 03:42
Subject: Re: [TowerTalk] Slopers, half slopers, (using the tower)


Roger,

I use two half slopers on 160M with the feed point at 100 ft and under a
number of yagis.  One slopes east and the other west and I do have gain
in the direction of the slope. More than two half slopers showed no
benefit here but you may have different results.

Doug

kk9a at arrl.net wrote:

> Since the tower is part of the 1/2 sloper antenna system, the radiation is
> more omni directional than a full sloper.  It's radiation pattern is
similar
> to an inverted "L".  I'm not sure if you can gain much by having 1/2
slopers
> in different directions.
>
> John
>
>
> ----- Original Message -----

>
> Any one have experience with "half slopers"? (half of a half wave with
> the tower serving as the other side)
>
> Yesterday I installed a half sloper for 160 and am quite pleased with
> the results.  The feed point is roughly 96 feet and the angle is close
> to 45 degrees on the South side of the tower.
>
> According to the "Antenna Handbook" there is some gain away from the
> tower through the antenna.    I'm thinking of installing two more. One
> to the NE and one to the NW.

> Any thoughts or suggestions?
>
> Roger (K8RI)
>
>
--
Doug Renwick VA5DX
PO Box 50, Clavet, Saskatchewan, Canada S0K 0Y0
VE5RA at sasktel.net
First VE5 9BDXCC
What profit it a ham if he gains all the awards yet forfeits his soul?
I'll run the race and I will never be the same again.

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