Valcom V33070-CL2 User manual

TECHNICAL MANUAL
and
INSTALLATION INSTRUCTIONS
V33070-CL2
ANTENNA
VTM-99-008 Rev B
Designed and Manufactured by:
Valcom Limited
Guelph, Ontario, Canada

V33070-CL
VTM-99-008
REVISION SHEET
Revision Description Entered By Date
- Draftl Issue 04 Oct 1999
A Amended maintenance section
Added outline drawing
Misc format edits
Assigned number
J.Soper 19 Nov 2007
B Added missing Figure 4.1 J.Soper 25 May2009

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TABLE OF CONTENTS
Section Page
1.0 GENERAL INFORMATION .............................................. 1
1.1 Introduction ..................................................... 1
1.2 TechnicalReferenceData .......................................... 1
2.0 FUNCTIONAL DESCRIPTION ............................................ 3
2.1 General......................................................... 3
2.2 ElectricalDescription ............................................. 3
2.3 MechanicalDescription............................................ 3
3.0 MAINTENANCE ........................................................ 4
3.1 ScheduledMaintenance............................................ 4
3.2 CorrectiveMaintenance............................................ 4
4.0 INSTALLATION ........................................................ 4
4.1 Unpacking ...................................................... 4
4.2 NewSitePreparation .............................................. 4
4.3 AssemblyandInstallation .......................................... 5
4.4 ElectricalInstallation.............................................. 6
5.0 PARTS LIST ............................................................ 8
5.1 General......................................................... 8
6.0 QUICK REFERENCE DATA .............................................. 9
6.1 General......................................................... 9
6.2 Manufacturer'sAddress ............................................ 9
LIST OF TABLE AND FIGURE
Figure 4.1 - Gin Pole Arrangement for V330 Series Antennas ...........................7
Table 5.1 - List of Parts for the V33070-CL2 Antenna ................................ 8

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1.0 GENERAL INFORMATION
1.1 Introduction
This manual describes the electrical and mechanical properties of the V33070-CL2
antenna. It also provides the information necessary to install, operate and maintain the
antenna system.
1.2 Technical Reference Data
Electrical Properties
Frequency Range 100 kHz to 30 MHz (with capacity of the antenna
tuner
Resonant Frequency 100 kHz to 2.0 MHz (as specified by customer)
Power Rating 2.0 kW below 1.5 MHz, 5 kW above 1.5 MHz
Dry Withstanding Voltage 30 kV
Electrical Length Varies with Loading Coil Section

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Mechanical Properties
Top Section Length 17.8 feet (5.4 meter)
3rd Section Length 18.6 feet (5.7 meter)
Loading Coil Section Length 18.3 feet (5.6 meter)
Bottom Section Length 17.4 feet (5.3 meter)
Typical Assembly Length
(including Valcosphere) 74.8 feet (22.8 meter)
Weight Approximately 360 lbs (158 kg)
Material Copper wire and strips embedded in the fiberglass and
thermo-setting epoxy resin composite
Finish Epoxy polyamide paint
Mounting Position Vertical
Base Diameter 17.5 inches (44.45 cm)
Mounting Hole Diameter 0.718 inches (1.82 cm)
Mounting Holes Dimensions 12 places equal spaced on a 14.625 inch (37.15 cm)
diameter bolt circle
Storage Temperature -95°C to +70°C (-140°F to +158°F)
Operating Temperature -50°C to +65°C (-76°F to +140°F)
Wind Loading Test Up to 150 mph (240 km/hr) relative
Abrasion Resistance Very Good
Water absorption After 24 hours immersed: 0.2%
After 48 hours immersed: 0.6%
After 168 hours immersed: 2.0%
Optional Accessories VTGS-20 Steel Tower/ or VHT-17 Steel Base Plate
VGP-17 Gin Pole
VGS-36100 Ground Screen
Optional Matching Unit VMT-7117

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2.0 FUNCTIONAL DESCRIPTION
2.1 General
The V33070-CL2 is intended to be used as part of an overall communication systemwhich
consists of a transmitter (or receiver or transceiver), an antenna coupler and the antenna. It
isused around the worldinmanyapplications withrequirementsinthe100kHz to 1700kHz
bands for marine and aeronautical radio beacon and broadcast communication systems.
2.2 Electrical Description
The Valcom, Model V33070-CL2 is a field proven, coil loaded, 74-foot antenna. The
second section is inductively loaded to a resonant frequency slightly higher than the
operating frequency specified by the customer.
2.3 Mechanical Description
TopandThirdSections. Thesearehollowtaperedcylindersmadeofcircumferentiallyand
longitudinally wound fibreglass filaments using a thermosetting epoxy resin matrix.
Embedded in the composite are multiple beryllium copper strips laid in a single-turn spiral
and secured at the top end to a hemispherical corona ball and at the bottom to a threaded
female ferrule into which the next section is secured. The surface is smoothed, primed and
painted with a polyamide epoxy surface coating.
Coil Loaded Section (Second Section) The coil loaded section is constructed in the same
manneras the top andthirdsections. Thecoiliswoundusingenamelcopperwireandisalso
embedded in the fiberglass. The ends of the coil are braised to the respective ferrules.
Bottom Section. The construction and finish are the same as for the other sections except
that the diameter expands out to meet the mounting base. The ferrule is threaded to fit into
the bottom of the Coil Loaded section. Multiple parallel conductors are connected to the
ferrule at the top and to a conducting ring near the bottom. The feed terminal extends from
the bottom ring to the surface of the antenna approximately 18.0 inches from the bottom of
the base flange. The base can withstand a flash over voltage of 30 kV.
NOTE: The sections of the antenna cannot be interchanged with other antennas due
to the unique locations of the locking screw holes.

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3.0 MAINTENANCE
3.1 Scheduled Maintenance
The antenna is virtually maintenance free. The external finish is an epoxy polyamide two
part compound paint. The minimum finish life before showing signs of deterioration should
be at least six years under normal climate condition.
When used in salt-water environments, it is recommended to wash the antenna base with
fresh water to remove any build-up of dried salt residue. This should be performed on a
monthly basis or after prolonged exposure to sea-spray.
Use a small wire brush to clear any debris from the drain groove found in the bottom of the
antenna base.
3.2 Corrective Maintenance
Generally, no corrective maintenance is possible or required. If one section is severely
damaged, it must be replaced by a new section. Workshops having experience in handling
epoxy fibreglass composite structures may attempt the repair of minor surface damage if
practicable.
NOTE
DONOT USELEADBASEPAINTTO TOUCH-UPORREPAINT
THE ANTENNA. USE ONLY EPOXY BASE PAINT.

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4.0 INSTALLATION
4.1 Unpacking
Open the shipping crates and remove the antenna sections. Remove all packing material
including the male ferrule protectors on the antenna sections. The V33070-CL2 antenna as
shipped consists of the items listed in Table 5.1. Check that all of the items are present and
in good condition.
4.2 New Site Preparation
(1) Check to see that the underside of the steel base plate at the site is free of cables and
other obstructions.
(2) Excavationandpouringofconcretepad to new site (seeIAWFoundation Detailsfor
VHB-17 Hinge Plate/ VTGS-20 Steel Tower).
(3) Installation Ground Screen to Valcom’s Specification IAW VGS-36100 Ground
Screen.
4.3 Assembly and Installation Antenna on the site
The following steps should be followed to assemble the V33070-CL2 antenna (see Figure
4.1).
(1) Remove retainer pin on the hinge plate (or steel tower) and open top plate to 90
degrees mount the bottom plate of the hinge plate on the anchor bolts. Secure with
hardware (flat washer, lockwasher, and nut) on each bolt.
(2) Obtain six saw horses or other supports that will hold the complete antenna
horizontally at a convenient working height and place them in the assembly area.
The assembly area must be a cleared working space approximately 90 feet long and
20 feet wide.
(3) Support the base section (item 1, Table 5.1) on two of the saw horses and tie it in
place.
(4) Align mounting holes in the plate with holes of the antenna flange, secure base
section to the plate with hardware, fed through from underside.
(5) Tie a rope (3/4" diameter polypropylene) to one eye of the gin pole, tie another rope

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as the same type to one eye of the gin pole. Slide gin pole into the pipe attachment
and secure.
(6) Support the second section (item 2, Table 5.1) on the other two saw horses so that
the two sections lie in the same straight line.
(7) Make sure the threads of the male ferrule on the base section are clear of foreign
material and free of burrs.
(8) Assemble the second antenna section onto the base section and tighten to align the
arrows at the joint using the strap wrench supplied (item 7, Table 5.1).
(9) Assemble the third section (item 3 , Table 5.1) to the second section by repeating
steps 6 to 8.
(10) Assemble the fourth section to the third section by repeating steps 6 to 8.
(11) After all sections are assembled, assemble the Valcosphere to the top of the fourth
section.
(12) The antenna now is ready to raise to its final position.
(13) Tie one rope (from gin pole eye) to the position on antenna specified on Figure 4.1.
A timber hitch knot is recommended to prevent slipping.
(14) Erect antenna by applying a gradual and constant pull on the rope referred to as the
“Pulling Force” (a winch or vehicle is recommended).
(15) Once the antenna is in the vertical position, insert retainer pin back into hinge plate,
secure with tension pin. Use bolts (supplied) to secure upper and lower plates of the
hinge plate together.
(16) Electrical connections can now be made.
4.4 Electrical Installation
Very carefully secure the lead from the transmitter or transceiver to the antenna by means
of the acorn screw and lock-washer provided (items 5 and 6, Table 5.1).

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Figure 4.1 - Gin Pole Arrangement for V330 Series Antennas