SIST ETS 300 373:1999/A1:1999

SLOVENSKI STANDARD
01-oktober-1999
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Radio Equipment and Systems (RES); Technical characteristics and methods of
measurement for maritime mobile transmitters and receivers for use in the MF and HF
bands
Ta slovenski standard je istoveten z: ETS 300 373/A1 Edition 1
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETS 300 373
AMENDMENT A1
August 1997
Source: ETSI TC-RES Reference: RE/RES-01028
ICS: 33.020
Key words: Maritime, radio, telephony
This amendment A1 modifies
the European Telecommunication Standard ETS 300 373 (1995)
Radio Equipment and Systems (RES);
Technical characteristics and methods of measurement for
maritime mobile transmitters and receivers for
use in the MF and HF bands
URGENT TECHNICAL CORRECTION
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997. All rights reserved.

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ETS 300 373: August 1995/A1: August 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 373: August 1995/A1: August 1997
Foreword
This amendment to ETS 300 373 (1995) has been produced by the Radio Equipment and Systems (RES)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
Transposition dates
Date of adoption of this amendment: 8 August 1997
Date of latest announcement of this amendment (doa): 30 November 1997
Date of latest publication or endorsement of this amendment (dop/e): 31 May 1998
Date of withdrawal of any conflicting National Standard (dow): 31 May 1998

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ETS 300 373: August 1995/A1: August 1997
Amendments
4.2.1 General
Replace entire subclause with the following:
All controls shall be easily identified from the position at which the operator operates the equipment.
The number of operational controls, their design and manner of functioning, location, arrangement and
size should provide for simple, quick and efficient operation. Controls which are not necessary for normal
operation shall not be readily accessible to the operator.
The controls should be arranged in a manner which minimizes the risk of inadvertent operation.
For transmitters it shall be possible to change the transmitter from any class of emission to another for
which it is designed to operate by means of not more than one control.
For receivers the class of emission shall be selectable by not more than one control.
4.3.3 Distress frequencies
Replace entire subclause with the following:
The distress frequencies shown in table 1 which are applicable to the equipment, shall be clearly
indicated, either on the front panel of the equipment or on an instruction label supplied with the equipment.
Table 1: Distress frequencies
DSC Telephony Telex
(kHz) (kHz) (kHz)
2 187,5 2 182 2 174,5
4 207,5 4 125 4 177,5
6 312 6 215 6 268
8 414,5 8 291 8 376,5
12 577 12 290 12 520
16 804,5 16 420 16 695
NOTE: The above DSC and telex frequencies are
assigned frequencies whereas the carrier
frequency is indicated for telephony.
In addition, manual controls necessary for the tuning of the equipment to the relevant frequencies in
table 1, and their settings, shall be clearly indicated.
4.5 Classes of emission
Replace entire subclause with the following:
The equipment shall provide for the transmission and/or reception of signals using the classes of emission
defined below, as appropriate to the equipment:
J3E SSB telephony, with the carrier suppressed at least 40 dB below peak envelope
power;
H3E SSB telephony on the frequency 2 182 kHz only with the carrier 4,5 dB - 6 dB
below peak envelope power. For on-board test purposes, using only a dummy
load, facilities shall be provided for H3E operation on the frequency of
2 200 kHz;
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ETS 300 373: August 1995/A1: August 1997
F1B FSK suitable for DSC with a frequency shift of ± 85 Hz. Alternatively class of
modulation J2B can be used with a 1 700 Hz sub-carrier. In this case the
equipment shall be tuned to a carrier frequency 1 700 Hz below the assigned
frequency.
The receiver may also provide for the reception of signals of other classes of emission.
5 Test conditions
Add the following:
When preparing test report forms for equipment tested in accordance with this ETS, the point where the
DC voltage is measured shall be specified (see subclause 5.2).
5.7.1 Measurement uncertainty
Replace entire subclause with the following:
Parameter Maximum value of
measurement
uncertainty
-8
RF frequency:
± 1 × 10
± 1,5 dB
RF Power, PEP in 50 Ω
± 2,5 dB
RF Power, PEP in 10 Ω / 250 pF
Conducted spurious emissions of transmitter: ± 4 dB
Audio output power: ± 0,5 dB
Sensitivity of receiver: ± 3 dB
Conducted emission of receiver: ± 3 dB
Two signal measurement: ± 4 dB
Three signal measurement: ± 3 dB
For the test methods according to this ETS the uncertainty figures are valid to a confidence level of 95 %
calculated according to the methods described in ETR 028 [8].
6.3 Performance check
Replace entire subclause with the following:
For the purpose of this ETS, the term "performance check" shall be taken to mean the following
measurements and limits:
for the transmitter:
- frequency error:
With the transmitter connected to an artificial antenna (see subclause 5.5), the transmitter
shall be tuned to the frequency 2 182 kHz and operated in H3E mode. The transmitter
frequency shall be within ± 10 Hz of 2 182 kHz;
- output power:
With the transmitter connected to an artificial antenna (see subclause 5.5), the transmitter
shall be tuned to the frequency 2 182 kHz and operated in H3E mode. When keyed without
modulation, the output power of the transmitter (carrier power) shall be within 15 W and
140 W;
- for the receiver:
- maximum usable sensitivity.
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ETS 300 373: August 1995/A1: August 1997
With the AGC operative, the receiver shall be adjusted to 2 182 kHz and operated in H3E
mode. A test signal as specified in subclause 5.6.2.2 shall be applied. The level of the input
signal shall be adjusted until the SINAD at the output of the receiver is 20 dB, and the output
power is at least the standard output power (see subclause 8.1.1). The level
...