Ultra Beam UB20 User manual

WiMo Antennen und Elektronik GmbH
Am Gäxwald 14, D-7686 Herxheim Tel. [phone] FAX 9668-11
http://www.wimo.com e-mail: [e-mail]
1
Manual
UB20 / UB40 / UB50 / 2 EL. 6-40
Rev. 1.10

WiMo Antennen und Elektronik GmbH
Am Gäxwald 14, D-7686 Herxheim Tel. [phone] FAX 9668-11
http://www.wimo.com e-mail: [e-mail]
2
UB-50
Tape path
conductor
Driver
Driver
0-40
Fig.2
Introduction
Some UltraBeam models work in 0 and 40 meters band with folded elements, this allows you
to work on 0 and 40 meters with full-size elements in the same mechanical dimensions of
UltraBeam 6-20 models.
This technique has been applied on 2 and element Yagi models.
In order to achieve that two curve models are applied to the ends of the elements, joined together
by glass fiber tubes, this creates a corridor in which the copper tape can scroll to reach the required
length for resonating up to 40 meters.
Figures 1 and 2 show in red the path and the shape of an inverted "C" which the folded dipole
looks like when operating on 40 meters.
NOTE: This manual only refers to the installation of the curves, side elements
and other specific parts of the models which work on 0m and 40m with folded
elements. For all other antenna assembly instructions refer to the manual
"Standard"
5,4 m.
2
elements
6
-
40
conductor
Drive
r
Driver
6-40
Fig.1
Single model driver Double model driver
1,6m
5,1m

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PVC GUIDE TUBES DRIVER 0-40
All UltraBeam models working in 0 and 40 meters with folded elements include
the installation of internal guide pvc tubes to the left and right elements attached to the motor unit.
The guide tube of folded elements is essential to allow the tape to slide within the
curve and the side elements without bending.
The guide element is composed of two sections of PVC pipe (2 x 1500) with a total length of
meters. Connect the two sections with PVC joining and common insulating tape.
Insert a second junction to one of the two ends, this will subsequently be used to
attach the guide tube to the motor unit (Fig.1-2)
Fig.1 Fig.2 Fig.
Insert the guide tube into the previously prepared the element (Figure )
telescopic element
PVC
MOTOR
Internal PVC guide tube
junction
tape tape
junction
tape

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4
INSTALLATION OF ELEMENTS ON MOTOR UNIT
Before inserting the elements in the motor unit it is necessary to fix the PVC guide tube.
During this operation it is necessary that the element remains aligned to the engine, if your
set-up assembly does not allow this, the help of a second person is absolutely needed to
support the element during the insertion of the guide tube.
Applied during the construction phase, the inner PVC tube to be inserted jnto the engine
contains a bi-adhesive that will keep the junction steady in time (fig.4)
Push the PVC pipe until it reaches its maximum insertion (Figure 1)
Carefully push the element into the motor unit until it stops (Fig.2- ) and tighten the
clamp of the rubber cap.
Fig.1 Fig.2 Fig.
Important note:
Be carefully while mounting the guide tubes.
In case of possible detachment of even a single tube, the copper tape will bend inevitably
compromising the unit's motor functions.……..
Fig.4
Bi-
NOTE:
The procedures relating to the installation of guide tubes
are common to all models with folded elements.
- 2 EL. 6-40
- UB-20
- UB-40
- UB-50

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5
CURVES ASSEMBLY AND SIDE TUBES
Only after inserting all the elements to the motor units you can install the curves and the
lateral elements.
For the side elements, glass fiber tubes of diameter 20mm are employed.
The 6-40 2 elements uses a single tube of 800 mm between a curve and the other.
The UB-50 employs three pipes of 1,400 mm, joined together by two fiber joints for a total length of
4200 mm.
In both cases, all the curves and tubes joints are fixed by means of thermo-tightening sheaths with
high mechanical resistance with internal adhesive, which guarantee solid, permanent and
waterproof junctions
On the UB50 a "T" mechanically connects the end of the central element to the side elements, in
this way the weight of the entire lateral element will be distributed on all three elements.
side tube
1 x 800 mm.
curve
as above
“ T ”
side tube
x 1400
mm.
coupling
as above
2 elements 6-40 UB-50

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2 ELEMENTS YAGI 6-40
To apply the thermo shrinking a heat gun is needed (1500-2000W)
The heating time varies depending on the outside temperature, and in any case the correct
temperature is reached when the inner glue comes out, creating a ring all around the edges.
Insert the side tube and the ends of the elements in the curves up to the maximum insertion (fig, 1).
Before heating the sheaths, check that the side section is parallel to the boom, to avoid typical
candy shape.
Move the sleeves exactly to the center of the splice and heat as described above. (Fig.2)
NOTE: Clean the joint surfaces of the tubes and curves before applying the sheath.
Avoid any twisting and movement of the joint until it is completely cool
The curves have drain holes, make sure they are facing down (picture )
Fig.1 Fig.2 Fig.
UB-50 YAGI
The procedures of the curves junctions are identical to the elements 2, only difference is the length
of the side element that is longer and is formed by three segments, in addition to a T central support Fig.4
curve curve
Fig.4
Before joining the three elements with joints you must insert the "T" shaped support.
Slide the T inside the element that will be placed at the center. There is no need to fix it, it will align to
the central element of the antenna at the end of assembly.
fiberglass
tube
x 1400 mm.
T
joint tube
2 x 100 mm.

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Combine the 1400 mm pipes placing the 10 cm small tubes exactly at half junction (fig.4-5).
Slide the sleeves on joints and heat up to the correct temperature (Figure 6)
Drill a small 2- mm hole on the same axis in the center in both junctions (fig.7)
NOTE: It’s important to check that the holes are facing down before heating conduits that hold whole
side element to the curves
Fig.4 Fig.5 Fig.6 Fig.7
FIXING / ADJUSTMENT OF “T” SUPPORT
adjust in the direction
of the arrows so that
the central element is
parallel to the external
elements
Adjust in the direction of
the arrows to align the
side element before fixing
the joint
…………………………………………………………………………...
Insert the T shaped tube to the end of the antenna central element.
The tube has sufficient length to let the element slide inside, this allows a
telescopic adjustment in the direction of the arrows which is useful to set the correct position of the T,
so that the whole side panel stays perfectly in line (only aesthetic factor). Any alignment which is not
perfect will not compromise in any way antenna operation.
Once the exact spot is found, apply the heat shrink sleeve to lock the T-tube to the end of the telescopic
element.
Move laterally the T inserted into the side panel in the sense of <arro s> to adjust
parallelism between the antenna elements. It is not necessary to lock the T element, you can also leave
it free to slide, so it will always find its natural position.

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UB20-MX / UB40-MX
The models UB20 and UB40 differ from UB50 MX in size of the elements and boom, and how they
work in a configuration 2 elements moxon on the lower frequency.
With regard to the assembly instructions of the curves and side elements, they are absolutely
identical to those of UB50 described in this manual.
On these two models the PVC guide tubes will be installed on both the external antenna
elements.
The figures show the copper tape path that allows the two antennas to act as a 2 elements
moxon configuration on the lowest frequency at which the model works.
2 elements moxon when work on 20 meter
2 elements moxon when work on 40 meters
UB20-MX
UB40-MX
Director Driver1 Director Driver1
Driver2

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9
TELESCOPIC ELEMENTS
MODEL
LENGTH TELESCOPIC
ELEMENTS
2 EL. 6-40 5,4 m.
UB20-MX ,5 m.
UB40MX 7,4 m.
UB-50 5,4 m.
SIDE PIPES / GUIDE TUBES
MODEL
LATERAL TUBES
LENGTH
PVC TUBES
LENGTH
2 EL. 6-40 1 x 0,8 m. 2 x 1,5 = m.
UB20-MX 2 x 1,15 = 2, m. 1 x 1,5 m
UB40-MX x 1,5 = 4,5 m. 2 x 1,5 = m.
UB-50 x 1,4 = 4,2 m. 2 x 1,5 = m.
NOTE: The quantities shown in the table are for one antenna side only (page 5).
telescopic
element
lateral
pvc

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10
ANTENNAS
DIAGRAM
2 ELEMENTI 6-40
1 x 162 cm
Sez. 60 x 60
1,62 m.
159 cm
124 cm
The position of the Mast / Boom plate in
models with elements is always at the
center boom,
in cases where it is necessary you can
move it towards the director. This will
provide more space between
the central element and Mast
Description on page 6 of the Standard
manual
Director

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Am Gäxwald 14, D-7686 Herxheim Tel. [phone] FAX 9668-11
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11
Note: UB20 - UB50 - UB40 are models with double driver, download the manual “Switch”
269 cm
2 1 cm
289 cm
242 cm