Phontech Communication Argo A-1 Handbook

05.09.2002 1/17

PHONTECH COMMUNICATION

P.B. 274, 3188 HORTEN, NORWAY

Phone [phone] Fax [phone]

e. mail: [e-mail]

www.phontech.no

HANDBOOK

FOR

MARINE AMPLIFIER SYSTEM

ARGO A-1

Handbook rev. no. 01

05.09.2002 2/17

MARINE AMPLIFIER SYSTEM ARGO A-1

SYSTEM DESCRIPTION.

LIST OF CONTENTS: Page.

1 General Description 2
2 List of unites in A-1 system 3
3 Description of units in A-1 system

- TRA1 main amplifier unit 4

- TRF1 preamplifier unit 5
4 List of facilities 6
5 Basic means of operation 7
6 Installation 8

- Antenna system in general

- TRF1 preamplifier

- TRA1 main amplifier

- AM receiving antenna

- TV/FM receiving antenna

- Grounding

- Blocking from main transmitter
7 Technical data 10
8 Single line diagram – small system 11
9 Single line diagram – large system with VCR 12
10 Single line diagram – large system with satellite 13
11 Declaration of manufacturer – CE declaration 14
12 Warranty 15

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1. General Description

Argo system A1 consist of TRF1 preamplifier and TRA1 main AGC
amplifier.The excellent per-formance of the ARGO system A1 can be attributed
to the design principles on which the construction of the amplifier is based. The
ARGO system A 1 is designed to receive, amplify and distribute broadcasted
radio and TV signals at sea. The ARGO system A 1 is based on the same
technology as the ARGO system A2000. It has the same sensitivity to weak
signals and the same ability to treat strong signals. The ARGO system A 1 is the
obvious choice for vessels that require a high quality reception of weak and
strong signals simultaneously when the ship is near land. Argo A1 is built in
compact design and easy to install. All in and output are located at the same
side. Some new features are complimented; -a input for satellite, S band area
(250 – 450 Mhz). -a Video input, channel 36 (592 – 598 Mhz). Argo A1 uses
one TV/FM receiving antenna and a wideband preamplifier TRF1. The TRF1
preamplifier has built in two frequency traps to prevent interference from the
Maritime VHF transmitter and NMT 450 cellular phone. TRF1 preamplifier
cover both VHF TV/FM and UHF TV frequency and has a gain from 17 to 20
dB. In the cable, which are connected between TRF1 preamplifier and TRA1
main amplifier, the preamplifier gets power and the TV/FM signal to the main
amplifier. A green LED are located beside the VHF/UHF input on the TRA1
main amplifier. This LED functions as a built in self test of the cable and
connection between the preamplifier and the main amplifier. If there is no
contact, the LED gives a strong light. If there is a short circuit, the LED don’t
give any light and if the connection is good and the preamplifier functions as it
should, the LED gives a weak light. TRA1 has a output market "TEST
output". By connecting a field meter or a TV, it is possible to check the level or
quality of the incoming signal from the TV/FM receiving antenna and the TRF1
preamplifier. TRA1 has one input for satellite, Note! Covers only S band area.
TRA1 has one input for video (VCR), Note! Only channel 36. TRA1 has one
input for AM antenna. TRA1 has built in AGC control. This keep the output
level constant. For AM at 100 dBµV, for VHF TV and FM 105 dBµV and for
UHF TV 110 dBµV. Argo A1 system is able to run up to 40 antenna outlets
directly. If the distribution network is larger, a Argo TRDA wideband distr.
Amplifier is needed.

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Blockdiagram Argo A1

VCR inp. Ch 36.

TRF1

VHF/UHF

preamplifier

AM

ANTENNA

VHF/UHF

TV/ FM

ANTENNA

UHF

AGC AMP.

220 VAC

Main output

To distr. Network

SAT. inp. S-Band

TRA1

VHF

AGC AMP.

AM

AGC AMP.

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2. List of unites in A-1 system

1 pc TRA1 main amplifier
1 pc TYRF1 preamplifier
1 pc Power cable, to be connected to 90 – 240 VAC
Note! Make sure that the cable is connected to an
Contact with proper grounding.

Sub unites in A-1 system

1 pc AM receiving whip antenna
1 pc TV/FM receiving antenna

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3. TRA1 main amplifier unit

TRA1 is the main amplifier in the Argo A1 system. Install the TRA1 main
amplifier as close to the antenna as possible. Avoid placing it in rooms with
high current cables, generators etc. Corroding environments should also be
avoided. Make sure the amplifier is sufficiently grounded.

Dimension / Mounting TRA1

8,30 cm

20,70 cm

2,70 cm2,70 cm

17 cm

POWER ON
AM input.

0,15 - 30 Mhz outp.
level 100 dBµV
AGC reg. Gain 70 dB

VHF/UHF input
from TRF1
preamplifier

TEST LED

TEST output

VHF/UHF
(47 - 860 Mhz)
Gain, only TRF1 pre.amp.

SAT. input

only S band
(250-450 Mhz)
Gain 20 dB

VIDEO input

only Ch. 36
(590-598Mhz)
Gain 20 dB

MAIN OUTPUT

(0,15 -860Mhz)

to Distr. Network

POWER INPUT

220 VAC/50-60hz

2,5A Fuses

Light
Strong: No conn.
Weak: O.K.
No: Short circuit

outp. level
VHF: 105 dBµV AGC reg.
UHF: 110 dBµV AGC reg.
Max. Gain 70 dB

ARGO A-1

TRA1

Main AGC distribution amplifier

AS Telrad, 6390 Vestnes. NORWAY.
Ph. [phone] Fax [phone]

[e-mail] - www.telrad.no

Marine amplifier system

24 cm

Frequency response / Output level Argo A 1

100 200 400 600 800

110

100

90

80

70

60

dBµV

Mhz

156,6 Mhz

455,25 Mhz

Satellitt S Band
250 - 450 Mhz

594 Mhz
Video

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TRF1 preamplifier unit

TRF1 is a preamplifier in the ARGO A1 system.
TRF1 is power supplied either from TRA1 main amplifier in a std. system or
TRPF power feed in a system with only pre-amplifier, ex. implemented in a
existing / older system. TRF1 cannot be supplied from other equipment than
these ARGO units.

Dimensjon TRF1

TRF1

VHF/UHF preamplifier

Freq: 47 - 860 Mhz
Gain: 17 - 20 dB
NF: < 2,8 dB

INPUT

OUTPUT

8,7 cm

2,6 cm

Frequency response / Gain TRF1

100 200 400 600 800

20

15

10

0

-10

dB

Mhz

156,6 Mhz 455,25 Mhz

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5. Installation

Antenna system in general.

Radio and TV frequency reception on board a ship is characterized by:

- WEAK SIGNALS ( NOISE PROBLEMS ).

- STRONG SIGNALS ( DISTORTION PROBLEMS ).

- A MIXTURE OF WEAK AND STRONG SIGNALS ( INTERFERENCE
PROBLEMS ).

- SLOW VARIATIONS IN SIGNAL STRENGTH ( FADING ).

- RAPID FLUCTUATIONS IN SIGNAL STRENGTH.

- MULTIPATH RECEPTION ( REFLECTIONS FROM SEA SURFACE ).

- A NEED FOR OMNIDIRECTIONAL ANTENNA.

The different forms of signal variations and scenarios are due to:

- THE MANEUVERING AND ROLLING OF THE SHIP.

- THE MOVEMENT OF THE SHIP.

- REFLECTIONS FROM THE SEA SURFACE.

- ATMOSPHERIC CHANGES.

- REFLECTIONS AND ABSORPTION DUE TO MASTS ETC.

Other problems worth considering are:

- MAN MADE NOISE ( GENERATORS, REGULATORS ETC. ).

- ON - SHIP TRANSMITTERS.

- VARIATIONS IN POWER SUPPLY, INCL. OVER VOLTAGE.

- LIGHTENING.

- EARTHING PROBLEMS.

- CLIMATE ( CORROSION ).

- MECHANICAL VIBRATIONS.

TRF1 preamplifier

Mount the TRF1 preamplifier directly to the TV/FM antenna. TRF1 can also be mounted to a
directive antenna. TRF1 is doubly protected against static charge and strong signals from the
main transmitter on board the vessel. After installing the preamplifier, the connectors should
be thoroughly covered with vulcanization tape. ( NB! Apply the tape from the bottom up.)

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TRA1 main amplifier

TRA1 is the main amplifier in the Argo A1 system. Install the TRA1 main amplifier as close
to the antenna as possible. Avoid placing it in rooms with high current cables, generators etc.
Corroding environments should also be avoided. Make sure the amplifier is sufficiently
grounded

AM receiving antenna / TV/FM receiving antenna

Install the antennas as instructed by the manufacturer. They should be placed as high up as
possible and have as large distance as possible from any transmitting aerial, any mast or other
equipment.

Grounding

Make sure that the main power cable (220 VAC) are connected in a grounded electric outlet.
A separate grounding cable can be install to avoid oscillation, specially in the AM frequency
area. The cable should be as short as possible.

Blocking from main transmitter

Since the Argo equipment is built to stand against the strong signal from the main transmitter,
a blocking of the system is not needed. However should the surroundings make it vise, or it is
a demand from the ship owners / shipyard, mount a blocking relay between the TRF1
preamplifier and the TRA1 main amplifier. Do the same on the cable between the AM
antenna and the AM input on TRA1.

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6. Technical data

Technical data TRA1

Gain AM: 70 dB
Frequency range AM: 0,15 – 30 Mhz
AGC area AM: 70 dB
Output level AM: 100 dBµV
Gain VHF: 70 dB
Frequency range VHF: 47 – 230 Mhz
AGC area VHF: 70 dB
Output level VHF 105 dBµV
Gain UHF: 70 dB
Frequency range UHF: 470 – 860 Mhz
AGC area UHF: 70 dB
Output level UHF: 110 dBµV
Frequency range satellite 300 – 450 Mhz
Gain Satellite: 20 dB
Frequency range Video: 592 – 598 Mhz (K-36)
Gain Video: 20 dB
Weight: 1 kg
Power supply: 220 VAC / 50 – 60 Hz

Technical data TRF1

Gain: 17 – 20 dB
Frequency range: 47 – 860 Mhz
Noise figure: < 2,8 dB
1 dB compression: 107 dBµV
Input / Output impedance: 75 ohm
Frequency trap: 75 ohm
Power supply: TRA1 or TRPF
Input signal plug: UHF male connector
Output signal plug: F - connector
Dimensions: 87x26x26 mm
Weight: 105 g

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11. Declaration of manufacturer – CE declaration

DECLARATION OF MANUFACTURER

(Manufacturers Declaration)

Manufacturer:

AS Telrad, Vestnesbukt, 6390 Vestnes. NORWAY

Ph. + 47 71180040 Fax. + 47 71180627

e.mail.: [e-mail] homepage: www.telrad.no

declare under our sole responsibility that the product(s)

Argo marine amplifier system A-1,

Argo AM, VHF and UHF wideband distribution amplifier TRDA,

to which this declaration relates is in conformity with the following

EMC requirements for standards

Emission standards: Immunity standards

EN 50081-2 1992 EN 50082-2 1995
EN 55022 A EN 61000-6-2 1999
EN 55011

Following the provision of the EMC Directive 03 05 1989, (89/336/EEC).

Vestnes, Norway date 2001.06.30

AS Telrad/ Phontech Communications AS

ARGO