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RADIO COMMUNICATIONS
3048 Tuned Dipole Antenna
Still waiting for the model from Lencom
Installation Handbook
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No part of this manual may be reproduced, transcribed, translated
into any language or transmitted in any form whatsoever without
the prior written consent of Codan Limited.
© Copyright 2013 Codan Limited.
Codan part number 15-04185-EN Issue 1, October 2013.
CODAN™, Envoy™, Easitalk™, and CALM™ are trademarks of
Codan Limited. Other brand, product, and company names
mentioned in this document are trademarks or registered
trademarks of their respective holders.
The English version takes precedence over any translated versions.
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Table of contents
Section 1 Introduction
Section 2 Overview
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Antenna control connector . . . . . . . . . . . . . . . . 5
RF connector . . . . . . . . . . . . . . . . . . . . . . . 6
RF output terminal . . . . . . . . . . . . . . . . . . . . 6
Earth stud . . . . . . . . . . . . . . . . . . . . . . . . . 6
TABLE OF CONTENTS
Section 3 Installing the antenna
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Contents of the antenna pack . . . . . . . . . . . . . . . 8
Required tools . . . . . . . . . . . . . . . . . . . . . . . 11
Footprint of the antenna . . . . . . . . . . . . . . . . . . 11
Typical layout . . . . . . . . . . . . . . . . . . . . . . . 13
Locating the antenna . . . . . . . . . . . . . . . . . . . 14
Earthing the antenna . . . . . . . . . . . . . . . . . . . 14
Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Installing the antenna . . . . . . . . . . . . . . . . . . . . . 17
Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . 17
Installation flowchart . . . . . . . . . . . . . . . . . . . 17
Installing the mast . . . . . . . . . . . . . . . . . . . . . 19
Installing the interface unit . . . . . . . . . . . . . . . . 24
Installing the head unit and dipoles . . . . . . . . . . . . 25
Raising the mast . . . . . . . . . . . . . . . . . . . . . 28
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK i
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TABLE OF CONTENTS
Connecting the cables from the interface unit to the
transceiver . . . . . . . . . . . . . . . . . . . . . . . . 29
Section 4 Specifications
Specifications . . . . . . . . . . . . . . . . . . . . . . . . 32
Interface requirements . . . . . . . . . . . . . . . . . . . . 33
Section 5 Accessories
Appendix A Compliance
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
EMC and safety notices . . . . . . . . . . . . . . . . . . . 38
Non-ionising radiation safety . . . . . . . . . . . . . . . 38
Appendix B Definitions
Standards and icons . . . . . . . . . . . . . . . . . . . . . 39
Acronyms and abbreviations . . . . . . . . . . . . . . . . . 40
Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Unit multipliers . . . . . . . . . . . . . . . . . . . . . . . . 42
About this issue . . . . . . . . . . . . . . . . . . . . . . . 42
Index
ii 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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LIST OF FIGURES
List of figures
Figure 1: Front view of the antenna control connector . . . . . . . . 5
Figure 2: Footprint of the antenna . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 3: Base plate for the mast . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 4: Installation flowchart . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 5: Preparing and connecting the bottom and top
sections of the mast . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 6: Laying out and connecting the guy ropes to the
anchor points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 7: Connecting the guy ropes to the erection pole . . . . . . 23
Figure 8: Preparing and connecting the top section of the
mast and the hub tube . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 9: Inner, centre and outer dipole elements . . . . . . . . . . . 27
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK iii
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LIST OF FIGURES
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iv 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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LIST OF TABLES
List of tables
Table 1: Pinouts for the antenna control connector . . . . . . . . . . 5
Table 2: Contents of the antenna pack . . . . . . . . . . . . . . . . . . . . 8
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK v
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LIST OF TABLES
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vi 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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1
Introduction
Congratulations on choosing a 3048 Tuned Dipole Antenna to meet
your HF communications needs. You can expect many years of
reliable high performance, and if ever assistance is required,
Codan’s world-class after-sales support team is ready to help.
Please read this handbook thoroughly and retain it for future
reference. There is an index at the end of this handbook to assist
you in finding information.
This handbook is for installers of the 3048 Tuned Dipole Antenna.
It assumes that you have experience in installing RF equipment.
This handbook contains the following sections:
Overview—provides an overview of the antenna and connectors
Installing the antenna—provides guidance on how to position,
install, and earth the antenna
Specifications—provides the common operational, environmental,
physical and interface specifications of the antenna
Accessories—lists the accessories available for the antenna
Compliance—provides compliance information and safety notices
for your antenna
Definitions—explains the terms and abbreviations used in this
handbook
There is an index at the end of this handbook.
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 1
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INTRODUCTION
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2 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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2
Overview
This section contains the following topics:
• General on page 4
• Connectors on page 5
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 3
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OVERVIEW
GENERAL
General
The 3048 Tuned Dipole Antenna provides continuous tuning for
transceivers that use multiple frequencies. It is designed to
withstand extreme environmental and physical conditions.
The antenna tunes its four 4.8 m dipole elements to a VSWR less
than 1.5:1 over the whole range of 2.5 to 30 MHz. The antenna is
supplied with a purpose-designed 6 m mast, guyed in four
directions at the 3 m and 6 m levels, and includes a pole for ease of
erection. This mast is designed for permanent installation on firm
soils and comes with all necessary components. If the mast is to be
located on sand or soft soils, then concrete anchor points and mast
footing is recommended.
The 3048 Tuned Dipole Antenna is compatible with any Codan HF
transceiver that can control a Codan 3042/3046 Antenna Tuner or
3040/9350 Automatic Tuning Whip Antenna.
TBD diagram needed here
4 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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Connectors
Antenna control connector
The antenna control connector passes control signals between the
Codan HF transceiver and the antenna tuner.
Figure 1: Front view of the antenna control connector
A
B
F
C
E
D
OVERVIEW
CONNECTORS
Table 1: Pinouts for the antenna control connector
Pin no. Description
A +12 V DC
BEarth
C Tune
D Scan
E Tune status indicator
F Not used
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 5
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OVERVIEW
CONNECTORS
RF connector
The RF connector (N-type female) passes RF signals between the
antenna tuner and the transceiver.
RF output terminal
The RF output terminal passes RF signals between the antenna and
the antenna tuner.
Earth stud
The earth stud is used to connect the antenna tuner to earth.
6 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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Installing the
3
antenna
This section contains the following topics:
• General on page 8
• Installing the antenna on page 17
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 7
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INSTALLING THE ANTENNA
GENERAL
General
The antenna tuner and antenna are critical elements in an HF
communication system. Correct installation of the transmitting
antenna provides efficient operation over the frequency range of
the transceiver. A good installation ensures the antenna tuner
provides optimum output power during transmission and clear
reception of weak signals.
When installing the antenna and tuner you must consider:
• the location and mounting of the antenna
• how to provide a good earth plane for the antenna
• the routing of the coaxial and control cable
• access to connectors
On receiving your antenna, check the contents against the packing
list. Make sure that all equipment itemised on the packing list is
present and that there is no damage to the equipment before you
start installing the system.
If anything is missing or damaged, please contact your nearest
Codan office immediately to obtain the correct warranty service
procedures. This ensures prompt assistance, minimal turnaround
time, and avoids any freight issues.
Contents of the antenna pack
Table 2: Contents of the antenna pack
Item Quantity
Cardboard tube, 3 m long
Mast, top section 1
Mast, base section 1
Star picket 4
8 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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INSTALLING THE ANTENNA
GENERAL
Table 2: Contents of the antenna pack (cont.)
Item Quantity
Erection pole 1
Cardboard tube, 2 m long
Dipole element, inner (largest diameter, slotted at both ends) 4
Dipole element, centre (non-slotted raw end, and slotted end) 4
Dipole element, outer (non-slotted raw end, caps fitted on outer
end)
Carton
Base plate 1
Tent peg 4
Guy assembly, top (marked 2) 1
Guy assembly, bottom (marked 1) 1
Plastic bag
D-shackle 8
Turnbuckle (thimble fitted) 8
M12 x 90 bolt 2
M12 flat washer 4
M12 spring washer 1
4
M12 nut 2
M8 x 65 bolt 1
M8 flat washer 2
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 9
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INSTALLING THE ANTENNA
GENERAL
Table 2: Contents of the antenna pack (cont.)
Item Quantity
M8 spring washer 1
M8 nut 1
HV link 2
U-bolt 2
Compression clamp 12
Roll, self-amalgamating tape 4
Bag, Alminox conductive paste 1
Cable tie 4
Miscellaneous
Wire rope grip 16
Interface unit, with captive 7 m RF and control cables 1
Hub tube and 3048 Tuned Dipole Antenna head unit, with fitted
1
8 mm galvanised bolt, nut and washers
8 mm hex head nut driver 1
3048 Tuned Dipole Antenna Installation Handbook 1
Earthing kit 01-1011-001 TBD leave out their part number? (optional, required
for ground mounting) ordered separately?
13 × 1235 mm earth rod 1
50 × 0.5 mm copper strip 5 m
11–25 mm compression clamp 1
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Required tools
The following customer-supplied tools are required during
installation:
• 19 mm spanner for the base fixings
• 13 mm spanner for the mast and head unit fixings
• 12 mm spanner for the U-bolts
• flat-blade screwdriver for the compression clamps
• knife to cut cable ties
• spirit level
NOTE: A step ladder may be used to support the head unit
while it is being assembled.
Footprint of the antenna
The mast and antenna require a certain amount of clear ground
during installation, as shown in Figure 2. The base plate for the
mast must be oriented correctly to allow the mast to lay on the
ground during installation, as shown in Figure 3.
INSTALLING THE ANTENNA
GENERAL
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 11
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INSTALLING THE ANTENNA
mast
anchor
point
4 m1 m
8 m
10 m
anchor
point
anchor
point
anchor
point
guy ropes
installation footprint installed footprint
GENERAL
Figure 2: Footprint of the antenna
12 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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Figure 3: Base plate for the mast
270 mm
(10.6 in)
220 mm
(8.7 in)
13 mm
(0.5 in)
270 mm
(10.6 in)
220 mm
(8.7 in)
13 mm
(0.5 in)
13 mm
(0.5 in)
13 mm
(0.5 in)
mast lays in this
direction during
installation
mast
erection
pole
INSTALLING THE ANTENNA
GENERAL
Typical layout
TBD need the model from Lencom. show critical distances between
interface unit and transceiver
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 13
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INSTALLING THE ANTENNA
GENERAL
Locating the antenna
To obtain optimal radiation efficiency from your antenna, and
optimal reception at your antenna, the antenna must be mounted in
a suitable location.
The antenna should be located in a position that:
• provides adequate space for installation
• supports the RF earthing required for correct tuning and
loading
• complies with any local EMC regulations
• provides at least 12 m between the antenna dipoles and any
power lines or wires
If the antenna is mounted on a rooftop, the following must be
considered:
• the roof must be able to support the weight of the mast and
antenna
• the roof, anchor points and fixtures must be able to
withstand the wind loading caused by the antenna
installation
• the mounting point for the base plate must be level
• any local regulations regarding an installation and the
distance to an edge of the roof
Earthing the antenna
When installing an antenna on open ground, earth conductivity is
often insufficient to provide adequate earthing, especially on
well-drained sandy, rocky or loamy soils. An earth plane should be
used to provide adequate earthing of the antenna. An earth mat for
an antenna mounted on open ground can be supplied by Codan
(Codan part number 15-00158).
14 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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INSTALLING THE ANTENNA
GENERAL
When installing an antenna on roof-tops where there is no existing
earth plane, an earth plane should be installed. The earth plane
should be a conducting surface extending several wavelengths in
all directions around the antenna. This can be provided by placing
a screen of wire mesh or similar material over the roof of the
building. Usually, a counterpoise system is used to provide an
efficient earth plane. A radial earth plane for an antenna mounted
on the roof-top of a building can be supplied by Codan (Codan part
number 15-00159).
If an earth plane, such as a counterpoise, cannot be provided for the
antenna, an earth wire connected to a suitable earth stake can be
used, but with reduced efficiency.
NOTE: As the earth wire forms part of the antenna system,
any resistance in the earthing network reduces the
efficiency of the antenna.
CAUTION: The earth connections are subject to corrosion and
oxidation. All joints must be clean, and the hardware
adequately tightened. The joints can be protected by
the application of silicone grease. In severe
conditions, joints should be covered with
self-amalgamating tape followed by a layer of good
quality UV-stable PVC tape.
CAUTION: RF earthing should not be relied upon to provide
protective earthing. It can fail upon the removal of
one of the interconnecting links. A separate wire
should always be connected to the item that you want
to protect.
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 15
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INSTALLING THE ANTENNA
GENERAL
Cabling
CAUTION: Large magnetic fields can be generated along the
Protect all the cables from sharp edges and mechanical abrasions.
Cables that pass through panels or walls must be protected by
grommets. Such holes need only be large enough to allow the end
of the cable with the smaller connector to pass through. Removing
a connector should be a last resort. Externally, the cable and
connectors need to be weatherproofed using self-amalgamating
rubber tape.
power cable during transmission and these fields
may be coupled into the control cabling. Failure to
keep these cables separated causes distortion of the
transmitted signal.
16 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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Installing the antenna
Related links:
Locating the antenna on page 14
Disclaimer
WARNING: The antenna tuner should be installed by a suitably
qualified technician, to any relevant standards and
approvals.
WARNING: Codan accepts no responsibility or liability in the
event of injury or any other damage due to insecure
or otherwise unsafe or inappropriate installation of
the antenna and tuner.
WARNING: The antenna must not come into contact with power
lines. Death may result if an electrically live antenna
is touched.TBD need better words?
INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
Installation flowchart
This flowchart provides a recommended sequence of tasks that
describe how to install the 3048 Tuned Dipole Antenna with the
6 m mast that has been designed specifically for this tuner and
antenna.
NOTE: Interface specifications are provided if you are
installing the tuner and antenna on your own mast.
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 17
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INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
Figure 4: Installation flowchart
18 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 27
Related links:
Locating the antenna on page 14
Footprint of the antenna on page 11
Installing the mast on page 19
Installing the head unit and dipoles on page 25
Raising the mast on page 28
Connecting the cables from the interface unit to the
transceiver on page 29
Installing the mast
To install the mast:
1 Determine a suitable location for the base plate of the mast,
taking into account the area required during installation.
1 Orient the base plate so that the attachment point for the
erection pole is on the opposite side from the direction in
which the mast will lay during installation.
1 Do one of the following:
• In a ground installation, secure the base plate in place
• In a rooftop installation, secure the base plate in
INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
using the tent pegs provided.
place using appropriate fasteners.
1 Measure 4 m from the centre of the base plate along the
plane in which the mast will lay during installation.
1 Do one of the following:
• In a ground installation, drive a star picket into the
ground to the level of the lowest hole.
NOTE: The flange with the holes on the star
picket must face toward the base plate.
• In a rooftop installation, attach an anchor point to the
roof using appropriate fasteners.
1 Provide three more anchor points at 90° intervals on the 4 m
radius from the centre of the base plate.
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 19
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INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
1 Position the bottom section of the mast between the flanges
1 Align the hole in the bottom of the mast with the central pair
1 Place an M12 flat washer onto an M12 bolt, then thread this
1 Hold an M12 flat washer between the mounting flange and
1 Hold another M12 flat washer between the other side of the
1 Place an M12 flat washer, an M12 spring washer, then an
1 Tighten the nut with your fingers only.
1 Attach the erection pole to the outmost pair of holes in the
1 Tighten the nut with your fingers only.
on the base plate, laying in the direction of the installation
area.
of holes in the mounting flanges of the base plate.
into the hole on the mounting flange.
the mast, then thread the bolt through this into the mast.
mast and the mounting flange, then thread the bolt through
this into the mounting flange.
M12 nut onto the M12 bolt.
mounting flanges of the base plate using the remaining M12
bolt and M12 nut.
1 Slide guy assembly 1 over the end of the bottom section of
the mast.
1 Slide guy assembly 2 over the end of the top section of the
mast.
1 Apply Alminox to the outer end of the bottom section of the
mast.
20 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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guy assembly 1
bottom section
of mast
apply Alminox
conductive grease
to outside of this tube
bottom section
of mast
top section
of mast
M8 bolt
M8 flat washer
M8 flat washer
M8 spring washer
M8 nut
INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
Figure 5: Preparing and connecting the bottom and top
sections of the mast
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 21
1 Slide the top section of the mast over the bottom section of
the mast, then rotate the top section to align the holes.
1 Place an M8 flat washer onto the M8 bolt, then thread this
through the holes on either side of the mast.
1 Place an M8 flat washer, M8 spring washer, then M8 nut
onto the M8 bolt.
Page 30
INSTALLING THE ANTENNA
mast
anchor
point
anchor
point
anchor
point
anchor
point
erection pole
INSTALLING THE ANTENNA
1 Tighten the nut TBD how tight does it have to be?
1 Align the mast so that it lays alongside the star dropper or
Figure 6: Laying out and connecting the guy ropes to the
anchor point in the installation area.
anchor points
1 Rotate both guy assemblies so that one guy rope on each is
facing down.
1 Loop the guys that are between the ground and the mast
back to the star dropper or anchor point that is alongside the
mast.
1 Terminate the end of each guy through the thimble on a
turnbuckle and secure with two rope grips, allowing 1 m of
free tail.
1 Screw each turnbuckle to the centre of its adjustment range.
22 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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INSTALLING THE ANTENNA
erection
pole
mast
rope grip
D-shackle
INSTALLING THE ANTENNA
1 Connect each turnbuckle to the star dropper or anchor point
using a D-shackle.
If you are using a star dropper, connect the guy from the top
guy assembly to the second hole from the top, and the guy
from the bottom guy assembly to the next hole down.
1 Run the guys on the side of each guy assembly to the
corresponding star dropper or anchor point and attach as
described above.
1 Connect a D-shackle to the top of the erection pole, then
raise the pole to the vertical position.
1 Thread the remaining two guys through the D-shackle on
the erection pole and secure back on themselves using a
rope grip.
Figure 7: Connecting the guy ropes to the erection pole
Related links:
Locating the antenna on page 14
Footprint of the antenna on page 11
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 23
Page 32
INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
Installing the interface unit
Earthing is an essential part of the installation. An optional earthing
kit is available for ground installations and comprises an earth rod,
a copper strip, and a compression clamp.
To install the interface unit:
1 Attach the interface unit to the bottom of the mast using the
U-bolts provided.
CAUTION: The length of the earth strap between the
interface unit and the earth rod must be as
short as possible.
1 Provide an earth point as close as possible to the interface
unit.
1 Fold a piece of 50 mm × 0.5 mm copper strip back on itself
twice for 30 mm.
1 Drill an 8 mm hole through all three layers.
1 Remove the nut from the earth bolt on the side of the
interface unit.
1 Coat the bolt with Alminox conductive grease.
1 Place the drilled copper strip onto the bolt, then secure with
the nut.
1 Run the copper strip to the earth point via the shortest path,
trimming off any excess copper strip.
1 Coat the earth point, copper strip and fastener with Alminox
conductive grease at the common point of contact.
1 TBD include a picture of the installed and earthed interface
unit Secure the copper strip to the earth point using the
fastener.
1 Roll out the coaxial cable to the top of the mast.
24 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 33
Installing the head unit and dipoles
To install the head unit and dipoles:
1 Rest the mast on a suitable support to provide a comfortable
working height and clearance for attaching the dipole
elements.
1 Remove the M8 bolt, washers and nut from the hub tube of
the head unit.
1 Apply Alminox to the outer end of the top section of the
mast.
INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 25
Page 34
INSTALLING THE ANTENNA
guy assembly 2
top section
of mast
apply Alminox
conductive grease
to outside of this tube
top section
of mast
hub tune with head unit
(tuner facing down)
M8 bolt
show the unit hanging down , if possible
INSTALLING THE ANTENNA
Figure 8: Preparing and connecting the top section of the
mast and the hub tube
1 Slide the hub tube with head unit onto the top of the mast
with the tuner facing down, then secure with the M8 bolt,
washers and nuts provided.
TBD insert picture of the head unit in the installation
orientation. show all of the important callouts...strain relief,
RF and control connectors, insulator horns
26 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
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INSTALLING THE ANTENNA
inner dipole
centre dipole
outer dipole
INSTALLING THE ANTENNA
1 Loosen the strain-relief bolt and top bracket, slide the RF
and control cables from the interface unit into the bracket,
then tighten the bolt.
NOTE: The RF cable has heatshrink at the point at
which it sits in the strain-relief bracket.
1 Connect the RF and control cables to the respective
connectors at the mast-end of the tuner unit.
1 Seal the connectors using self-amalgamating tape.
1 Remove the bolts from the HV links at the dipole end of the
tuner unit.
1 Apply Alminox conductive grease to two lugs and one of
the bolts, then secure the lugs to the HV link using the bolt.
1 Repeat for the other lugs, bolt and HF link.
1 Identify the inner, centre and outer dipole elements (4 of
each type).
Figure 9: Inner, centre and outer dipole elements
1 Apply Alminox conductive grease to the non-slotted, raw
metal sleeves that slide into other dipole elements.
1 Slide a loose compression clamp over each dipole element.
1 Slide each centre dipole element into an inner dipole
element and secure with the compression clamp from the
centre dipole element.
1 Slide each outer dipole element into a centre dipole element
and secure with the compression clamp from the outer
dipole element.
1 Apply Alminox conductive grease to the four insulator
horns on the hub tube.
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 27
Page 36
INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
1 Slide each inner dipole element onto an insulator horn.
1 Apply Alminox conductive grease to the brass terminal on
an HV link, place the terminal on the inner dipole element
near the end, then secure with the compression clamp from
the inner dipole element.
1 Use cable ties at regular intervals to secure the RF and
control cables to the mast.
Raising the mast
Two people are required to raise the mast.
To raise the mast:
1 Position one person at the outer end of the horizontal mast,
and the other at the erection pole.
1 Lift the outer end of the mast up while pulling down the
erection pole.
NOTE: The person at the end of the mast should walk
toward the base of the mast, lifting the mast as
they move.
When the mast is vertical, release the guys from the
D-shackle on the erection pole, while maintaining tension
on the guys at all times.
1 Attach the guys to the remaining star dropper or anchor
point in the manner previously described.
1 Use a spirit level to check that the mast is vertical, adjusting
the guys using the turnbuckle as required to remove slack.
1 Tighten the bolt at the base of the mast....TBD how do you
rotate it then to the desired direction of communication?
28 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 37
INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
Should the base plate have been oriented in this preferred
direction to start off with....what is the preferred plane?
NOTE: Check the guys regularly.
Connecting the cables from the interface unit to the transceiver
CAUTION: If the control cable from the interface unit to the
transceiver is longer than 13 m, the interface unit
requires a separate 12 V DC power source.
To connect the cables:
1 Connect the RF and control cables to the respective
connectors on the interface unit.
1 Seal the connectors using self-amalgamating tape.
1 Connect the other end of the cables to the transceiver.
1 If a separate 12 V DC power source is required, do the
following:
• Remove the dust cap from the Power I/P connector.
• Connect the external DC power cable.
• Seal the connector using self-amalgamating tape.
• Connect the bare wires to an appropriate DC power
source.
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 29
Page 38
INSTALLING THE ANTENNA
INSTALLING THE ANTENNA
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30 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 39
4
Specifications
This section contains the following topics:
• Specifications on page 32
• Interface requirements on page 33
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 31
Page 40
SPECIFICATIONS
SPECIFICATIONS
Specifications
32 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 41
Interface requirements
INTERFACE REQUIREMENTS
SPECIFICATIONS
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 33
Page 42
SPECIFICATIONS
INTERFACE REQUIREMENTS
34 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 43
5
Accessories
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 35
Page 44
ACCESSORIES
36 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 45
A
Compliance
This section contains the following topics:
• Overview on page 38
• EMC and safety notices on page 38
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 37
Page 46
COMPLIANCE
OVERVIEW
Overview
This section describes how to ensure the 3048 Tuned Dipole
Antenna complies wi the European R&TTE Directive 1999/5/EC.
EMC and safety notices
Non-ionising radiation safety
To ensure optimal transceiver performance and to avoid exposure
to excessive electromagnetic fields, the antenna system must be
installed according to the instructions provided.
WARNING: High voltages exist on the antenna during
transmission and tuning. Do not touch the antenna
during these activities. RF burns may result.
WARNING: Install the earthing system or counterpoise as
directed to prevent RF burns from any metal part of
the transceiver.
WARNING: You should not transmit from your transceiver or
tune the antenna unless people are beyond the safe
working distance for the installation.
Safe working distance is based on continuous exposure to CW-type
transmissions, as set out in the ICNIRP Exposure Guidelines
(1998) for occupational exposure. Safe working distance can be
reduced with normal voice communication.
38 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 47
Definitions
B
Standards and icons
The following standards and icons are used:
This typeface... Means...
Italic a cross-reference, text requiring emphasis, or variable
information
Bold a key on a computer keyboard
Bold a menu, submenu, tab, entry, a value in the user interface of
the control point, or key that you press on the control point
NOTE:
CAUTION:
WARNING:
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 39
the text may be of interest to you
proceed with caution as your actions may lead to loss of
data, privacy or signal quality
your actions may cause harm to yourself or the equipment
Page 48
DEFINITIONS
ACRONYMS AND ABBREVIATIONS
Acronyms and abbreviations
This term... Means...
CW continuous wave
DC direct current
EMC electromagnetic compatibility
ETSI European Telecommunications Standards Institute
HF high frequency
ICNIRP International Commission on Non-Ionizing Radiation
Protection
R&TTE radio and telecommunications terminal equipment
RF radio frequency
VSWR voltage standing wave ratio
40 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 49
Units
NOTE: Imperial dimensions are in United States Customary
Units.
Measurement Unit Abbreviation
Area American wire gauge AWG
Capacitance farad F
Current amp A
Frequency hertz Hz
Impedance ohm Ω
DEFINITIONS
UNITS
Length metre
(inch/feet/yard/mile)
Power watt W
Power ratio decibel dB
Temperature degrees Celsius
(Fahrenheit)
Time second s
hour h
Voltage volt V
Weight gram
(pound)
m
(in/ft/yd/mi)
°C
(°F)
g
(lb)
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK 41
Page 50
DEFINITIONS
UNIT MULTIPLIERS
Unit multipliers
NOTE: Units are expressed in accordance with ISO
Unit Name Multiplier
M mega 1000 000
k kilo 1 000
m milli 0.001
μ micro 0.000 001
n nano 0.000000001
1000:1992 ‘SI units and recommendations for the
use of their multiples and of certain other units’.
About this issue
This is the first issue of the 3048 Tuned Dipole Antenna Installation
Handbook.
42 3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK
Page 51
INDEX
Index
A
antenna
contents
8
earthing
14
locating
antenna control connector
14
C
compliance
EMC and safety notices
non-ionising radiation safety
overview
38
connector
antenna control
earth stud
RF
6
RF output terminal
5
6
6
D
dipole elements
installing
25
E
earth stud 6
H
head unit
installing
25
tools required
interface unit
installing
11
24
M
5
mast
installing
raising
19
28
O
38
overview 4
R
RF connector 6
RF output terminal
6
I
installation
flowchart
general
3048 TUNED DIPOLE ANTENNA INSTALLATION HANDBOOK INDEX -1
17
8
Page 52
INDEX
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INDEX- 2
Page 53
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