Comrod AT82 User manual

Comrod A/S, N-4124 Tau -Norway. Telephone [phone]. Telefax ([phone]. E-mail: sales@comrod.
COMROD MODULAR ANTENNAS
8m, 7m, 6m, HF Transmitting,MF-HF Receiving Antennas
High quality and high performance fiberglass rod antennas
Transmitting antennas for simplex and duplex SSB
Receiving antennas for MF-HF and SSB
Application:
The modular system is our answer to the GMDSS.
The antennas can be part of any MF/HF communication
system but is specially designed to satisfy the demands
of the GMDSS.
Depending on the equipment and the traffic pattern of
the vessel you can choose between antennas of
6, 7 or 8 m length.
Different installations demand different mounting
possibilities. The modular system provides you with all
the solutions you need:
* Installation in mast or post or directly to wall.
* Installation on weldedbrackets.
* Flange or deck mounting with side feed.
* Flange or deck mounting with end feed.
The flange mounted, side feed versions can be fitted
with a manual or electrical tilting device.
The antennas can be equipped with connecting kit for
transmitting/transceivers (AT-Kit) or a kit for receiving
(AR-Kit). The receiving kit can be with matching
transformer (AR/T-Kit).
Receiving antennas can be supplied with protection
against static discharges that can harm the receiver,
contact Comrod for prices and delivery time.
Various lenghts, Various mounting
Nr: 06-6-018/3
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System modules:
Top Whip A 4 m (13 ft) top whip, APB41, is common to all antennas.
Bottom section The bottom section comes in three possible lengths 2, 3 and 4 m ( 6.7, 10 and
13 ft). For different mounting possibilities, see the last page.
Connecting kit There are 3 different connecting kits, AT, AR and AR/T. The AT is a
transmitting/tranceiving kit while the AR is a receiving kit. The AR/T is a
receiving kit with matching transformer, useful when a long cable is required.
MT-Tilt The M-Tilt is a manual tilting mechanism that allows you to tilt the flange
mount side feed versions . We also supply an electrical tilting mechanism.
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Frequency
(MHz)Transmitting Antenna Transmitting Antenna 7 mTransmitting Antenna
1.63-j1.3103-j1.2004-j1.060
2.04-j1.0254-j9505-j800
3.07-j9708-j5509-j470
4.09-j41010-j32511-j290
5.017-j26018-j20020-j145
6.020-j15025-j9528-j38
7.035-j6540-j1055+j55
8.040+j3050+j9060+j155
10.0100+j190130+j270200+j400
12.0600+j450650+j4501000+j300
16.01000+j200900-j500500-j500
18.0700-j500400-j500250-j450
22.0200-j40090-j28070-j80
25.090-j19575-j10240-j200
30.0200+j150500+j0400-j300
Frequency range1.6-30 MHz
Power rating1.5 kW PEP
ImpedanceSee separate section
PolarizationVertical
PatternOmnidirectional
Electrical length5.5 m (18 ft) (add 0.5 m (1.7 ft) for base mount)
6.5m (21 ft) (add 0.5 m (1.7 ft) for base mount)
7.5 m (25 ft) (add 0.5 m (1.7 ft) for base mount, subtract
Impedance Measurements:
Antenna mounted on a 2 m steelpipe over flat steel roof. Feed line
2 m.
Electrical specifications transmitting antennas:
Connection kits for End feed
and Side feed transmitting
antennas
Nr: 06-6-018/3
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Frequency range 0.15-30 MHz
Polarization Vertical
Pattern Omnidirectional
Electrical length 5.5 m (18 ft) (add 0.5 m (1.7 ft) for base
mount)
6.5m (21.5 ft) (add 0.5 m (1.7 ft) for base
mount)
7.5 m (25 ft) (add 0.5 m (1.7 ft) for base
Electrical specifications receiving antennas:
Design Selfsupporting fiberglass rod with aluminium or
Height 6 m (20 ft)
7 m (23 ft)
Weight 6 m: 7.0 kg
7 m: 7.6 kg
Sections 6 m:
Base: AXB22 Bracket,
side feed: AXB22D flange,
end feed: AXB22D/S Flange, side feed
Top: APB41
7 m:
Base: AXB32 Bracket,
side feed AXB32D Flange,
end feed AXB32D/S Flange,
side feed Top:APB41
8 m:
Base: AXB42 Bracket,
side feed AXB42D Flange,
end feed AXB42D/S Flange,
Wind rating 55 m/s = 125 mph
Moment of flexure 6 m: 53.3 kpm at 55 m/s
7 m: 75.3 kpm at 55 m/s
Deflection due to wind load 6 m: 2.4 m (8 ft) at tip ball at 55 m/s wind
load
Finish Polyurethane lacquer, white
Temperature range -55 °C, +55 °C, -67° F, +131 °F
Ice buildup Not affected
Transformers for Receiving antennas:
When a long feeding cable is necessary, a transformer is
recommended to compensate for the signal strength loss
in the cable. A transformer is also recommended if the
antenna is used mainly on low frequencies.
The transformer is mounted on a circuit board that is
easily installed. For specifications please refer to separate
datasheet.
Mechanical specifications:
End feed, side feed receiving
antennas.
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Mast/wall mounting:
Versions: AT82, AT72, AT62
AR82, AR72, AR62
AR82T, AR72T, AR62T
Mounting by means of U-bolts with nuts
(included) or directly on wall or steel plate.
Mounting to weld brackets.
Versions: AT82H
AR82H
Mounting by means of 2 x M10
bolts to weld brackets or to a
mast or rail by means of the
ATC-mounting (included).
Base mount, Side feed:
Versions: AT82D/S, AT72D/S, AT62D/S
AR82D/S, AR72D/S, AR62D/S
AR82D/S/T, AR72D/S/T
AR62D/S/T
Mounting on deck or flange by means of 6 x
M10 bolts.
Mast/wall mounting.
Bracket mount
Base mount,side feed.
Nr: 06-6-018/3
MOUNTING:
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Base mount, End feed:
Versions: AT82D, AT72D, AT62D
AR82D, AR72D, AR62D
AR82D/T, AR72D/T, AR62D/T
Mounted on a flange or bracket.
Cable is connected with a UHF female
connector on the receive antennas.
Mounting of top whip:
In order to mount the whip to the base
section, use the spring washer and firmly
screw the whip and base section together
using a torque of 200 Nm. The Grub screw
is then tightened, this prevents the top whip
from unscrewing.
Tilting mechanism optional for Base mount
side feed:
M-Tilt AXBYD.
Electrical tilt after request.
M-Tilt is mounted on deck or pedestal by
means of 4 x M12 bolts. Mountings to the
antenna flang holes. 6pcs. M10x40 bolts
with nuts (included).
Base mount, end feed.
Top whip
Manual tilt.
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