[BC] Directional Antenna Proofs

[Alan E. Gearing]

On 20 Jun 12 9:11 PM, James B. Potter wrote:
> Gentlemen (I use that characterization advisedly), and any ladies who might
> be party to these proceedings:
>
> I need an authoritative current resource to guide me as to the requirements
> of AM directional antenna proofs -- both partial and full, how often, and
> other legal and technical details.  Radio Magazine maybe?  I already have a
> current version of the FCC R&R, but I have been told by other engineers that
> certain provisions have been relaxed, etc.  I just started at a 5-tower
> directional 560 station with DAD and DAN patterns, and the coverage is
> significantly lower than when this system was originally installed.  Folks
> can't hear Rush Limbaugh anymore, and that is a serious situation here in
> the Buckle on the Bible Belt, Southern Missouri.  However, the antenna
> current ratios and phase are 'right on the money.'  The pattern is out here
> and there, particularly at night.  No obvious deterioration in the system,
> which was expensively designed by Jules Cohen a few decades ago. Any help
> would be appreciated, thankx.

James,

What station? If it was done by Jules Cohen & Associates a few decades ago, 
I may have been involved.

Regards,

Alan

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Alan E. Gearing, PE
Mullaney Engineering, Inc.
Direct: 518-392-0534