The 20th Ed agrees with the element spacings but the tip dimension are
different, They are:
R 56.0
DE 52.0
D1 61.5
D2 50.125
I put the optimized spacings and the above tip lengths in YO 7.1 and the
performance looks good. Forward gain about 8DBI across the band and F/B
30+db at the low end diminishing to 20db at the top of the band. SWR at 1:1
at 14.2 and 1.5 at the both band edges. Not bad for a 26 foot boom.
Bob
----- Original Message -----
From: <n8de@thepoint.net>
To: "Dale Martin" <kg5u@hal-pc.org>
Cc: <towertalk@contesting.com>
Sent: Tuesday, June 24, 2008 10:23 PM
Subject: Re: [TowerTalk] 204CA Antenna Dimensions?
> From Table 8, Page 11-23, ARRL Antenna Book, 17th Edition
> Element Spacing Element Tip
> Refl: 0.000 54.500
> DE: 85.000 50.125
> Dir 1: 72.000 61.500
> Dir 2: 149.000 50.125
>
> All dimensions in INCHES.
>
> Don
> N8DE
>
> Quoting Dale Martin <kg5u@hal-pc.org>:
>
>>
>> We've got a brand new 204ba to assemble at FD.
>>
>> Anyone have or know the source for dimensions for a 204CA version of of
>> the
>> 204BA?
>>
>>
>> 73
>> Dale, kg5u
>>
>>
>> _______________________________________________
>>
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>
>
>
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