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TECHNICAL MANUAL
and
INSTALLATION INSTRUCTIONS
V33070-CL2
ANTENNA
VTM-99-008 Rev B
Designed and Manufactured by:
Valcom Limited
Guelph, Ontario, Canada
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V33070-CL
REVISION SHEET
Revision Description Entered By Date
- Draftl Issue 04 Oct 1999
A Amended maintenance section
J.Soper 19 Nov 2007
Added outline drawing
Misc format edits
Assigned number
B Added missing Figure 4.1 J.Soper 25 May2009
VTM-99-008
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V33070-CL
TABLE OF CONTENTS
Section
Page
1.0 GENERAL INFORMATION .............................................. 1
1.1 Introduction ..................................................... 1
1.2 Technical Reference Data .......................................... 1
2.0 FUNCTIONAL DESCRIPTION ............................................ 3
2.1 General......................................................... 3
2.2 Electrical Description ............................................. 3
2.3 Mechanical Description............................................ 3
3.0 MAINTENANCE ........................................................ 4
3.1 Scheduled Maintenance............................................ 4
3.2 Corrective Maintenance............................................ 4
4.0 INSTALLATION ........................................................ 4
4.1 Unpacking ...................................................... 4
4.2 New Site Preparation .............................................. 4
4.3 Assembly and Installation .......................................... 5
4.4 Electrical Installation.............................................. 6
5.0 PARTS LIST ............................................................ 8
5.1 General......................................................... 8
6.0 QUICK REFERENCE DATA .............................................. 9
6.1 General......................................................... 9
6.2 Manufacturer's Address ............................................ 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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VTM-99-008
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V33070-CL
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
Frequency Range
Resonant Frequency
Power Rating
Dry Withstanding Voltage
Electrical Length
Electrical Properties
100 kHz to 30 MHz (with capacity of the antenna
tuner
100 kHz to 2.0 MHz (as specified by customer)
2.0 kW below 1.5 MHz, 5 kW above 1.5 MHz
30 kV
Varies with Loading Coil Section
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V33070-CL
Mechanical Properties
Top Section Length
3rd Section Length
Loading Coil Section Length
Bottom Section Length
Typical Assembly Length
(including Valcosphere)
Weight
Material
Finish
Mounting Position
Base Diameter
Mounting Hole Diameter
Mounting Holes Dimensions
17.8 feet (5.4 meter)
18.6 feet (5.7 meter)
18.3 feet (5.6 meter)
17.4 feet (5.3 meter)
74.8 feet (22.8 meter)
Approximately 360 lbs (158 kg)
Copper wire and strips embedded in the fiberglass and
thermo-setting epoxy resin composite
Epoxy polyamide paint
Vertical
17.5 inches (44.45 cm)
0.718 inches (1.82 cm)
12 places equal spaced on a 14.625 inch (37.15 cm)
diameter bolt circle
Storage Temperature
Operating Temperature
Wind Loading Test
Abrasion Resistance
Water absorption
Optional Accessories
Optional Matching Unit
-95°C to +70°C (-140°F to +158°F)
-50°C to +65°C (-76°F to +140°F)
Up to 150 mph (240 km/hr) relative
Very Good
After 24 hours immersed: 0.2%
After 48 hours immersed: 0.6%
After 168 hours immersed: 2.0%
VTGS-20 Steel Tower/ or VHT-17 Steel Base Plate
VGP-17 Gin Pole
VGS-36100 Ground Screen
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 system which
consists of a transmitter (or receiver or transceiver), an antenna coupler and the antenna. It
is used around the world in many applications with requirements in the 100 kHz to 1700 kHz
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
Top and Third Sections. These are hollow tapered cylinders made of circumferentially and
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.
V33070-CL
Coil Loaded Section (Second Section) The coil loaded section is constructed in the same
manner as the top and third sections. The coil is wound using enamel copper wire and is also
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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3.1 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.
V33070-CL
3.0 MAINTENANCE
NOTE
DO NOT USE LEAD BASE PAINT TO TOUCH-UP OR REPAINT
THE ANTENNA. USE ONLY EPOXY BASE PAINT.
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VTM-99-008
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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) Excavation and pouring of concrete pad to new site (see IAW Foundation Details for
VHB-17 Hinge Plate/ VTGS-20 Steel Tower).
(3) Installation Ground Screen to Valcom’s Specification IAW VGS-36100 Ground
Screen.
V33070-CL
4.0 INSTALLATION
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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VTM-99-008
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V33070-CL
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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V33070-CL
Figure 4.1 - Gin Pole Arrangement for V330 Series Antennas
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5.1 General
A list of parts shipped with the V33070-CL2 antenna appears in Table 5.1.
V33070-CL
5.0 PARTS LIST
Table 5.1 - List of Parts for the V33070-CL2 Antenna
Item
Part Number Description Qty Notes
No.
1 Base Section (V33070-CL2) 1
2 Section 2 1
3 Section 3 1
4 Section 4 1
5 VD-77-00132-1 Valcosphere 1
6 Top Hat Whips (optional) 1 set
7 No. 5 Strap Wrench 1 ea
8 Silicone Sealant 1
9 Hardware Package (Washer, Lock-
Spring, Helical, 3/8 inch nominal,
Phosphor Bronze)
1 set
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VTM-99-008
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V33070-CL
6.0 QUICK REFERENCE DATA
6.1 GENERAL
Quick reference engineering data for use during planning and installation activities for the V33070CL antenna is presented on the following pages.
* Quick Reference Data - V33070-CL Antenna
6.2 MANUFACTURER’S ADDRESS
Postal address: Shipping address:
Valcom Manufacturing Group, Inc.
P.O. Box 603
Guelph, Ontario
Canada
N1H 6L3
Valcom Manufacturing Group, Inc.
175 Southgate Drive
Guelph, Ontario
Canada
N1G 3M5
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V33070-CL
QUICK REFERENCE DATA
V33070-CL2 SERIES
VALCOSPHERE
ELECTRICAL CHARACTERISTICS
FREQUENCY RANGE
RESONANT FREQUENCY
POWER RATING
DRY WITHSTANDING VOLTAGE
17.8 FT (5.4 M)
18.6 FT (5.7 M)
NOTES:
74.8 FT (22.8 M)
1. THE ADVANTAGE OF THE CENTRE LOADING COIL IN SECTION TWO IS TO PROVIDE REDUCED
RESONANCE OVER A STRAIGHT VERTICAL WHIP, THEREFORE REDUCING BASE FEED VOLTAGE
AND PROVIDING A GREATER POWE R HANDLING CAPABILITY.
2. DO NOT USE LE A D B A S E P A INT TO TOUCH-UP OR REPAINT ANTENNA.
3. UNITED STATES PATENT NUMBERS 3,725,944 AND 4,500,888 APPLY.
ELECTRICAL LENGTH
MECHANICAL CHARACTERISTICS
MECHANICAL LENGTH
BASE INSULATOR
TOP TERMINATION
JOINTS
ICE LOADING TEST TO 150 MPH (240 Km/Hr)
WIND LOADING TEST
ABRASION RESISTANCE
CENTRE OF GRAVITY
TEMPERATURE
FINISH
WEIGHT
V33070-CL2 V33070-FT-CL2
100 KHz to 30 MHz-WITH TUNER
100 KHz TO 2 MHz-SPECIFIED BY CUSTOMER
2 KW BELOW 1.5 MHz, 5 KW ABOVE 1.5 MHz
30 KV
VARIES WITH LOADING SECTION
74.8 FT (22.8 M)
EPOXY/FIBREGLASS
VALCOSPHERE
BRONZE FERRULE C/W LOCKING PIN
.75 INCH (1.87 CM) AT 100 MPH (160 Km/Hr)
25 FT (7.6 M) 24 FT (7.3 M)
-60°F TO 150°F (-50°C TO 65°C)
EPOXY POLYAMIDE PAINT
350 LBS (158 KG)
76.0 FT (23.2 M)
GOOD
360 LBS (162 KG)
STANDARDOPTIONAL
FEED-THROUGH
9.0 IN
22.9 CM
17.50 IN
(44.45 CM)
17.4 FT (5.3 M) 18.3 FT (5.6 M)
SECTION 1 SECTION 2 SECTION 3 SECTION 4
(5.4 CM)
2.13 IN TYP
5.0 IN
12.7 CM
P.O. BOX 603 GUELPH, ON TA RIO, C AN ADA, N1H 6L3
INTERNET: www.valcom-guelph.com EMAIL: enquiries@valcom-guelph.com
TEL 519-824-3220 FAX 519-824-3411
10
SIDE FEED
18 IN
(45.7 CM)
12 HOLES .7 1 8 (1.82 CM) DIA
EQUASPACED ON A
14.625 (37.14 CM)
DIA BOLT CIRCLE
VTM-99-008
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