Tonna F9FT Assembly Instructions Manual

ASSEMBLY INSTRUCTIONS
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FOFT
ANTENNA
=~
IMPORTANT
When opening the package, check and compare al] parts and hardware with
enclosed part list.
ELEMENT ASSEMBLY
For best efficiency, it is necessary to keep elements at some distance
from boom (refer to medalion n° 2).
1) Place element in stand-off, with a smal] hammer, gently knock the free
tip of element, to thrust element through hole (2A and 2B).
2) Slide element till proper centering is reached (2C).
Operation must be carried out with utmost care to avoid unwanted bending
of elements.
ANTENNA ASSEMBLY
The red end indicates the front of the antenna, the black end, the rear,
directors are counted up from rear to front.
Refer to assembly diagram for proper mounting :
1) Join the two boom sections together (see medalion n° 3 on diagram).
Use M5 screw n°6 and clamps n°9 and n°10.
2) Element assembly : Each element is marked with a color (see general
diagram and color code in element table).
Refer to medalion 3 for proper mounting of stand-off on boom. Make sure
the bump fits into the positioning hole.
CAUTION
The reflector is the longest element, each successive director is either
the same or shorter than the prior director. Make sure directors are cor-
rectly mounted by checking the color order, according to code.
If elements are not properly mounted, performance of the antenna may be
drastically reduced.
3) Driven element assembly :
A short piece of coay (RG 213/U), is factory mounted on the driven ele-
ment. Run the coax through the 11 mm (7/16 ") hole and attach the driven
element with the special screws n° 7 (see medalion n® 1).
4) Mount the supporting bracket on the boom, using M5 screw n° 8, and
clamps n° 9 and n° 10 (see medalion n° 5).
ATTACHING THE FEED LINE
A very high quality, professional type, coax cable must be used. Remernber
the RG 213/U exhibits a loss of 29 dB/100 m (9,7 dB:100') at 1,300 MHz.
If better coax cable is available, use it. A type N connector (UG 21 B/U)
must be mounted at the end of the short lengh of coax, runing out of the
driven element.
CAUTION
The connector must be mounted ONLY ONCE the coax has been run through
the 11 mm (7/16") mounting hole !!
This coax length is not randomly cut : fro stacking purposes, this length
is an integer number of electrical half-wavelengths, and is the same on
all manufactured antennas.