Label Italy AKG/77 User manual

L A B E L I T A L Y S R L - V i a S . A l l e n d e , 5 9 – 4 1 1 2 2 M O D E N A
T E L : + 3 9 - 5 9 - 3 6 2 9 9 3 F A : + 3 9 - 5 9 - 3 7 6 0 5 6
w e b - w w w . l a b e l i t a l y . c o m e - m a i l - i n f o @ l a b e l i t a l y . c o m
AKG/77
H.P. Circular Polarization FM Antenna
MOUNTING INSTRUCTIONS
These wide band FM antennas, made of aluminum Alodyne 120 are particularly
recommended for High output power Transmitters.
AKG/77
BAYS DB ANTENNA WEIGHT WIND VEL. WIND LOAD
GAIN Vert. dimensions Kg Km/h Kg.
1 -1.5 1,8 mt 11.0 160 28
2 1.5 4,3 mt 22.0
4 4.5 9,3 mt 44.0
6 6.0 14,3 mt 66.0
8 7.5 19,3 mt 88.0

L A B E L I T A L Y S R L - V i a S . A l l e n d e , 5 9 – 4 1 1 2 2 M O D E N A
T E L : + 3 9 - 5 9 - 3 6 2 9 9 3 F A : + 3 9 - 5 9 - 3 7 6 0 5 6
w e b - w w w . l a b e l i t a l y . c o m e - m a i l - i n f o @ l a b e l i t a l y . c o m
SUGGESTED MAST SECTION
Is suggested install this Dipole Antenna over poles or guyed mast because the section
higher than 110mm can increase the SWR value and modify the radiation pattern.
DISTANCE ESTIMATION BETWEEN FM ANTENNA BAYS
Wave Length =
λ
= 300 : f(MHz)
Distance between antenna bays (any antenna types) = d
d (suggested) =
λ
x 0.85
88MHz ➾
λ
= 300 : 88 = 3.41 mt ➾ d = 3.41 x 0.85 = 2.9 mt
98MHz ➾
λ
= 300 : 98 = 3.06 mt ➾ d = 3.06 x 0.85 = 2.6 mt
108MHz ➾
λ
= 300 : 108 = 2.78 mt ➾ d = 2.78 x 0.85 = 2.36 mt
Distance d suggested 2.6mt, even if working frequency is Mid FM Band

L A B E L I T A L Y S R L - V i a S . A l l e n d e , 5 9 – 4 1 1 2 2 M O D E N A
T E L : + 3 9 - 5 9 - 3 6 2 9 9 3 F A : + 3 9 - 5 9 - 3 7 6 0 5 6
w e b - w w w . l a b e l i t a l y . c o m e - m a i l - i n f o @ l a b e l i t a l y . c o m
MOUNTING INSTRUCTIONS
AKG/77
The antenna must be assembled with the central insulator down.
The elements without the hole must be mounted looking to the high while the
elements with the hole must be mounting looking down.
The elements with the hole have different length and for this reason have been
marked with different colors , pay attention to follow the BLU – RED - GREEN.
After inserting the elements lock nuts lightly.
Insert the central link and lock it to the inner brass conductor coming out from the
central insulator.
Lock strongly all the nuts.
Lock the antenna to the mast at the distance indicated from the lines.
Protect the connector with appropriate tape.
Please, apply spray Oil on all the contact surfaces
and the screw holes.