Maritime DSB (Item 1-13 of Article 2 Paragraph 1 of Certification Ordinance)

Test items

Technical standards

(1) 27 MHz band (2) 40 MHz band (3) 150 MHz band
Class of emissions A3E A3E A3E
Assigned frequency or designated frequency 26.100 - 28.000MHz 29.700 - 41.000MHz 146.000 - 162.0375MHz
Number of channels and channel separation
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Tolerance of frequency
(×10-6)
50Hz 20 Over 1W : 20
1W or less : 50
156-162.0375MHz : 10
Tolerance of occupied bandwidth 6kHz 6kHz 6kHz
Tolerance of spurious and unwanted emission intensity Over 1W Spurious : 50mW and -40dB
Unwanted : 50µW
Spurious : 1mW and -60dB
Unwanted : -60dB
Spurious : 1mW and -80dB
Unwanted : -60dB
1W or less Spurious : 1mW
Unwanted : 50µW
Spurious : 100µW
Unwanted : 50µW
Spurious : 100µW
Unwanted : 50µW
Antenna power Designated value 50W 50W 50W
Tolerance +20%, -50% +20%, -50% +20%, -50%
Limit of secondary radiated emissions 4nW 4nW 4nW
Modulation factor 70 % 70 % 70 %
Overall frequency response characteristics 6dB 6dB 6dB
Overall distortion factorf and noise 20dB 20dB 20dB
Sensitivity 10µV 10µV 10µV
Passing bandwidth 5kHz 5kHz 10kHz
Spurious response 40dB 40dB 40dB
adjacent channel selectivity characteristics 50dB 50dB 50dB
Other equipment or function (1) Automatic identfication device
(2) Selective calling device
(3) Modulation signal processing device
(1) Automatic identfication device
(2) Selective calling device
(3) Modulation signal processing device
(1) Automatic identfication device
(2) Selective calling device
(3) Modulation signal processing device
Note
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Notice: Regulations in the Ordinance Regulating Radio Equipment shall have priority over the descriptions in the sheet when any difference is found between them. Further above descriptions do not cover all of the regulations.

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