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Dish calculs

This javascript pages will allow you to detrmine head parametres, characteristics of the dish and the ones for the contact. For doing this just change green, values, and the calculus comes automatically.

Dish dimensions

Height (must be >width)

mm

Width

mm

Depth

mm

Dish characteristics

Focale f

mm

Equivalent f/D

Characteristics the source must have

d1

mm

d2

mm

Source field width at -10dB

°

Inclinaison source/horizontale

°

Elevation (angle de l'antenne/verticale quand elle vise l'horizon)

°

d (how to make the antenna shoot the horizon)

mm

Performances

Frequence

GHz

Rendement

%

Theoretical gain

dB

Principal field width at -3dB

°

Number of spiral (helical antenna case)

spires


Thanks to F4BAY and F6AGR for their preliminary work.
(c)Copyright Gilles-F4HLA-07/2002


Creation date : 11/01/2005 @ 23:02
Last update : 15/01/2005 @ 00:01
Category : Ham radio
Page read 7570 times


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