[Towertalk] director rotation

[Mike]

Coupling with respect angle is generally a function of square of the
cosine of the angle between the two elements. Thus at 5 degrees
offset, the coupling loss relative to perfect alignment would be
around -0.03 dB. At 30 degrees offset, the coupling loss would
be -1.25 dB, increasing to -3 dB at 45 degree offset.

73 de Mike, W4EF..................

----- Original Message -----
From: "Bruce Makas" <k1my@msn.com>
To: "Towertalk submital" <towertalk@contesting.com>
Sent: Saturday, May 11, 2002 8:44 AM
Subject: [Towertalk] director rotation


> I have a KLM KT34XA. If the reflector were to rotate a lot on the boom,
say
> 30-45 degrees from horizontal, would that have any significant effect on
> antenna performance?
>
> Has not happened but I was wondering as it appears I am about 5 degrees
off
> horizontal now.
>
> Thanks,
>
> Bruce K1MY
>
>
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