DX Engineering DXE-RCA8C-SYS-2P Manual page 24

Antennas are spaced 45 degrees apart. Layout above is typical for North America with the
default position (1) having the array point toward the North East.
Endfire
Spacing
Distance
Freq Between
MHz Antennas =
246/F [feet]
1.800 136.67
1.825 134.79
1.830 134.43
1.860 132.26
3.500 70.29
3.650 67.40
3.800 64.74
7.200 34.17
Table 4 - Array Dimensional Layout (Highlighted figures are optimal for 1.83, 3.8 and 7.3 MHz)
Radius of Circle
Radius of
One Half
Circle[feet] = 1/2
Distance
distance between
Between
antennas divided by
Antennas
sin 22.5 degrees
[feet]
(0.383)
178.6
68.33
176.1
67.40
175.64
67.21
172.8
66.13
35.14 91.8
88.1
33.70
84.58
32.37
44.66
17.09
- 24 -
Broadside
Spacing
Diameter,
Endfire
Diameters Spacing &
of Circles Broadside
[feet] Spacing
form a
triangle.
357.1
329.9
352.2
325.4
351.3 324.5
345.6
319.3
183.7 169.7
176.1
162.7
169.2 156.3
89.32 82.5
Broadside
Spacing as
a % of WL
0.604
0.604
0.604
0.604
0.604
0.604
0.604
0.604