Installing Radar - Degree of dip?

Again, thanks for the responses. I had to chuckle when Les made his comment about the only reason to do the math for dip was for the fun of it. Right on! I’ve never thought it critical one way or another. Raymarine suggests that the installer provide for it – hence my initial question.

I also like to plan trips. Planning extends my cruising range and counts as next best to cruising. The best thing about the math and the planning is that they can be classified as boating activity.

:arrow: Les,

The arches I’ve seen look good and you make strong points in their favor. I don’t think I could find one in the Keys and get it installed in the next three weeks. If I get out to the NW and am dissatisfied with the 5 inch mount, I may order one. Where do I get details?

:arrow: Tyboo

I’m counting.

Unless the tangent of an angle increases with latitude or westing, ( ask Charlie, he knows those sort of things) your Autocad, or, both my Excel and Texas Instruments calculator need calibrating.

My TI calculator gives for

5 Tan(5 degrees) = 0.437443318

And Excel for

=5*TAN(RADIANS(5)) = 0.437443318

Best to all
 
Wanderer":3nnerrqw said:
:arrow: Tyboo

I’m counting.

Uh oh.

To tell you the truth, I can't even spell trigonometry. All I can do is draw a five inch line, rotate it from one end 5 degrees, and measure the vertical distance between the ends. And its really AutoCad LT, because I can't afford the full blown version. Sorry. This is just one more discussion I should have stayed out of. Look what happened to me on the thread with the scientists!
 
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