Yeah, that's wrong.
However, there is a minimal gain increase and a drastically improved
pattern over the
B model...and you can do it without adding any new material I
believe...just move
the elements on the boom and reset the lengths.
73, Tyler K3MM
----------
> From: grhosler1@mmm.com
> To: towertalk(a)contesting.com <towertalk@contesting.com>
> Subject: Hy Gain antenna query
To: <towertalk@contesting.com>
> Date: Friday, December 13, 1996 7:46 PM
>
>
> Bill - N3RR wrote:
>
> >First of all do not install the 105BA(S) antennas without modifying them
> >to be 105CA(S) antennas. The 105CA design has been computer optimized
> >and you will greatly appreciate the several dB gain and front to back
> >you will get after installing them as CA rather than BA. The difference
> >is mainly in the spacing of the elements on the boom. Just call HiGain
> >and buy the manual for the 105CA. You will be pleasently surprised how
> >easy it is to modify and how much difference it will make.
>
>
> Several dB gain? According to HyGain the following is representative
> of the Gain and F/B when optimized for the various settings:
>
> Setting Ctr Freq Gain (dBd) Max F/B 2:1 SWR B/W
> CW 28.2 8.20 27 dB 1100 KHz
> Low Phone 28.4 8.22 27 dB 1100 KHz
> Mid Phone 28.8 8.26 27 dB 1100 KHz
> Broad Band 28.8 8.20 24 dB 1700 KHz
> Max F/B 28.5 7.56 36 dB 600 KHz
> Max Gain 28.5 8.60 23 dB 400 KHz
>
> The above settings are not the standard as shipped from HyGain, but
> optimized settings for a particular configuration. The difference in
> performance between the old 105BA and the new 105CA are not several dB
> gain. The CA design does clean up the pattern a bit, but you shouldn't
> dive in with unrealistic expectations. The element lengths and spacing
> for the above settings are available by pointing your Web browser to:
>
> http://ourworld.compuserve.com/hygain/
>
> 73 & GUD DX
>
> de KN0Z Gary
>
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