Message 21395 in TECH.WW
From: G8MNY
Date: Sat, 25 Apr 26 08:26:00 Z
Newsgroups: TECH.WW
Subject: 2m 4el Quad you can build
Message-ID: <58075_GB7CIP>
Path: N2MH4|N3HYM|IW2OHX|GB7CIP
R:260425/0830Z 30590@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260425/0830Z 3160@N3HYM.#FRDK.MD.USA.NOAM BPQ6.0.24
R:260425/0829Z 5329@IW2OHX.ILOM.ITA.EU BPQ6.0.25
R:260425/0826Z @:GB7CIP.#32.GBR.EURO #:58075 [Caterham Surrey GBR]
From: G8MNY@GB7CIP.#32.GBR.EURO
To : TECH@WW
FOUR ELEMENT QUAD - FULLERTON RADIO CLUB
It is supposedly equal to a Cushcraft 11 element beam.
LR 21" per side LT 20.51" per side
84.1" total 82.04" total
Diagonal length 29.73" Diagonal length 29.01"
_________________________ _________________________
|. .| |. .|
| . . | | . . |
| . . | | . . |
| . . | | . . |
| . | | . |
| . . | | . . |
| . . | | . . |
| . . | | . . |
|_________________________| |_________________________|
LD - 1, 19.9" per side LD - 2, 19.7" per side
79.6" total 78.8" total
Diagonal length 28.14" Diagonal length 27.82"
_________________________ _________________________
|. .| |. .|
| . . | | . . |
| . . | | . . |
| . . | | . . |
| o | | o |
| . . | | . . |
| . . | | . . |
| . . | | . . |
|_________________________| |_________________________|
The antenna boom is made out of schedule 40 pvc pipe, 1"size, which is 1.5"
In diameter, actual size. The boom is approximately 42" long. The cross
pieces are 1/4 inch bicycle flag poles mad out of fibreglass, or you could
use fibreglass fence posts.
TOP VIEW LOOKING DOWN
LR LT LD-1 LD-2
Vertical Polarisation Feed Point
|
V
_ _ _ _
| | | | | | | |
| | | | | | | |
| | | | 1" PVC T | | | |
| | | | | | | | |
_|_|__________________|_|_________________|_|_________________|_|_
|__o____________________o_______|_|_|_______o___________________o__|
| | | | |_| | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
|_| |_| |_| |_|
| <-----16.1"------> | <----12.4"------> | <-----12.4"-----> |
0.2 wavelength 0.15 wave length to build
YOU FEED A QUAD FROM THE HORIZONTAL SPREADER END.
How about some more homebrew projects with illustrations on packet radio. I
would be interested in reports from anyone who builds this antenna.
Good luck & I will look forward to your comments.
73 de Doug, KI6DS @K6RAU-1
Why don't U send an interesting bul?
73 De John, G8MNY @ GB7CIP
← Return to Bulletin List