[TowerTalk] 204CA Antenna Dimensions?

[Bob Maser]

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 at thepoint.net>
To: "Dale Martin" <kg5u at hal-pc.org>
Cc: <towertalk at 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 at 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
>>
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk