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[TowerTalk] NEW ANTENNA IDEA

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Subject: [TowerTalk] NEW ANTENNA IDEA
From: otterstad@inet.uni2.dk (Ragnar Otterstad)
Date: Thu, 28 Jan 1999 11:53:42 +0100
My Force12 Magnum 20/30/40 is very close to this. It loads nicely on the
18/24 Mhz bands too !!!  hi

73  Rag  OZ8RO



>The antenna would have  2  Elements on 40, 30, 17, 12 Meters,
>
>with  TWO   Driven Elements and separate reflectors spaced 0.15 WL.
>
>The 40M  driven element would be trapped for 17M
>with additional capacity hat loading if required.
>
>The 30M driven element would be trapped for 12M
>with additional capacity hat loading if required.
>
>The main disadvantage to traps is narrow bandwidth,
>but the WARC bands are very narrow to begin with.
>I will accept reduced bandwidth on 40M for smaller size.
>(Would a 17M trap reduce 40M bandwidth any more than
>other loading schemes used on existing "shorty-forties"?
>
>Stack this above a conventional tri-bander (C31XR, TH7, X9, etc.)
>and you have 7 bands on two feedlines that rotate with one rotor.
>A  POWERFUL combination !
>
>(Does this sound like something derived from a Cushcraft 2L40?
>It should.   It is well known that the CC  has a reasonable match on 17M
>already.  All it needs is an additional element for 12 / 30 and
>reflectors.)
>
>OK  you Antenna Manufacturers,  what are you waiting for?
>I'll be watching for the UPS  truck !
>
>de   Tom    N4KG
>
>
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