SPLINED HORNS
The splined horns allow shifting of
the servo neutral position at the
servo horn.
b) Effect
Setting and shifting the neutral
position
Baseline A
a) Angle divisions
Fig. 66
To shift the holes center line "o the
right (clockwise) relative to baseline
A, shift arm 2 to the position of
arm 1 and set it to the position
closest to baseline A.
(Example] For a four arm horn.
the angular shift per segment is
14.4° The
s h i f t to the right is 90"
- (14.4 x 6) 3.6°
Fig. 65
1) The splined horn has 25 seg-
ments. The amount of change
per segment is; 360 : 25 - 14.4"
2) The minimum adjustable angle
is determined by the number of
arms or number of the holes in
the shaft. For four arms, the
minimum adjustable angle is:
360 :
25X4
=3.6
Number of divisions
To shift the same angle in the op-
posite direction, use the opposite
arm number.
The following splined horns are optional.
Fig. 67
For a six arm horn, turn the arm
counterclockwise and set arm 2 to
the position of arm 1. The adjustable
angle is 60° - (14.4 x 4) = 2.4°.
Arm 3 shift 4.8° to the right, arm 6
shifts 2.4° to the left. and arm 4
shifts 7.2° to the right and left.
Fig. 68
Fig. 69
H O R N A
H O R N B
HORN C
H O R N E
H O R N D
H O R N F
32
Futaba Digital Proportional
Frequencies (FOR U.S.A.)
•The frequency of Futaba digital proportional
sets can be changed among bands (1)~(6) on
the 27MHz band only.
• However, a 27MHz band set cannot be changed
to 72MHz band, and vice versa.
• Therefore, always attach the correct frequency
flag to the end of the transmitter antenna. Each
frequency band has its own designated color, as
stated above. The frequency flag is intended for
identificantion purposes.
• Also change the frequency flag when frequency
is changed.
• Futaba paired crystals are precisely matched.
Always use a Futaba crystal set (transmitter,
receiver) when changing the frequency.
• It is illegal to change crystals of transmitter on
the 72-75MHz bands in the U.S.A.
Frequency Channel No. Flag Color
26 27MHz • Aircraft/Car/Boat
26 995 Brown
27.045
27.095
27.145
27.195
27.255
72/75MHz • Aircraft only "Shared
72.030
72.080
72.160-
72.240
72.320-
72.400
72.550
72.590
7 2 . 6 3 0
7 2 . 6 7 0
72.710
72.750
72.790
7 2 . 8 3 0
7 2 . 8 7 0
7 2 . 9 1 0
72.960'
75.640
75 MHz
7 5 4 3 0
7 5 4 7 0
75510
75550
75.590
75670
75.7)0
75.750
75.790
75B30
75fl70
12
38
40
42
44
46
48
50
52
54
56
Car & Boat only
62
64
66
68
70
74
76
78
80
82
84
Red
Orange
Yellow
Green
Blue
Brown-Red ITop Flaq/Ribbon-Bottom
Flag/Ribbon)
White/Brown
White/Blue
White/Red
White/Purple
White/Orange
Orange/Grey
Yellow/Black
Yellow/Red
Yellow/Yellow
Yellow/Blue
Yellow/Grey
Green/Black
G'een/Red
Green/Yellow
G'een/Blue
White/Yellow
While/Green
Blue-Red (Top Flag'Ribbon-Bottom
Flag/RibbonI
Blue-Yellow
Blue-Blue
Blue-Grey
Purple-Black
Purple-Yellow
Purple-Blue
Purple-Grey
Grey.Black
Grey-Red
53MHz • Aircraft/Car/Boat • FCC Amatuer License Required
53.100
53.200
53.300
53.400
53.500
53.600
53.700
53.800
Black/Brown
Black/Red
Black/Orange
Black/Yellow
Black/Green
Black/Blue*
Black/Purple* *Not generally in use*
Black/Grey* '
