[C320-list] Math problem

[Jerry Mickelson]

Unless radar therory has changed over the years, it will not see the  
mast or damage the radar.
Jerry
118

Sent from my iPhone

On Jan 19, 2011, at 6:26 PM, "Robert E. Sloat" <resloat at comcast.net>  
wrote:

> Draw the triangle on a piece of paper and then measure the angle you  
> need. Also, you should be able to adjust the blanking area during  
> initial radar setup.
>
> Bob Sloat
> Savannah 894
> ----- Original Message ----- From: <LOCALJG at aol.com>
> To: <c320-list at catalina320.com>
> Sent: Wednesday, January 19, 2011 2:16 PM
> Subject: [C320-list] Math problem
>
>
>> I am about to hang a Furuno Radar dish on my mast.  There is a  way  
>> to turn
>> off the radar where the radar signal sweeps past the  mast. This  
>> small part
>> of the radar's sweeping arch is called the "blanking  area."    So  
>> in order
>> to find the amount of blanking area, I need  to do a math problem.
>> Regrettably I am mathematically challenged and  wish to gain  
>> assistance from
>> someone more inclined toward numerical  dexterity.
>>
>> Here is the challenge:  Think of this as a simple triangular   
>> equation.
>> Two legs of the triangle are 14.5 inches long.  The  base of the  
>> triangle is
>> 5.5 inches long.  I need to know the angle  in degrees of the apex  
>> of the
>> triangle.
>>
>> The 14.5 inch legs are being measured from the center of the  Radar  
>> dish to
>> the sides of the main mast.  The distance of 5.5 inches  is the  
>> distance
>> between the two 14.5 inch legs of the triangle at the  mast.  The  
>> blanking
>> area of the radar will be around 6 degrees. I will set  this in the  
>> radar when
>> I program it following installation.
>>
>> Thanks for the help.
>>
>> John G.
>> 1996 #329
>