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G0OEK > TECH 25.10.06 23:21l 56 Lines 2455 Bytes #999 (0) @ WW
BID : 331046G0OEK
Read: GUEST DL1LCA DK2SH DL8FBH
Subj: 160 meter antenna
Path: DB0FHN<DB0RGB<DB0MRW<OK0PPL<DB0RES<ON0AR<VK6HGR<GB7YFS<GB7TUT<GB7CIP
Sent: 061025/1835Z @:GB7CIP.#32.GBR.EU #:52672 [Caterham] $:331046G0OEK
From: G0OEK@GB7CIP.#32.GBR.EU
To : TECH@WW
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160 meter antenna for a small garden.
___
I---I---- ____
I---I ---- ____ Could slope down to
I---I ---- ____ // a fence or tree.
I---I // ---- ____ \
I---I ---- ____ \
I---I ----O----II
I---I <---- Insulator ^ II
I---I Coil. 2m length, 40mm, (1 5/8") non metalic plastic pipe. II
I---I Wire. 140ft, 4mm plastic covered. II
I---I Wind 70ft. on pipe leaving remanding 70ft. II
I---I for horizontal part of ant. II
I---I Wind wire with 1/2" spacing, II
I---I (center of winding to center of next winding). II
I---I II
I---I I put a piece of wood inside my plastic pipe, to II
I---I keep it more rigid. Cap top to stop water entering. II
I---I II
I---I Pole at end---> II
I---I of garden II
I---I Windings to about 1ft of end of pipe. II
I---I / Keep metal masts as far as possible from windings. EG 3" II
I---I / II
I---I----- Center wire > 50 ohm Coax to
I I --- Braid > transceiver.
I I I
I I I
I___I I Wire to earth stake
I I I
I I
I I <----- Mast.
I I
I I To tune antenna, trim horizontal wire. If SWR doesn't go
I I down enough after cutting 6 or 7 feet off, take a few
I I turns off bottom of coil.
You could use 2" dia pipe and thinner wire, if you find it easier
to get. Its worth a try.
Can be used on other bands, but not tried it here.
73, G0OEK Dave @ CIPBBS 24:10:06
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73 - Dave, G0OEK @ GB7CIP
Message timed: 19:30 on 25 Oct 2006
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