What is the maximum authorized bandwidth of a high frequency radiotelegraphy signal, emission A1A, in the maritime service?

What is the maximum authorized bandwidth of a high frequency radiotelegraphy signal, emission A1A, in the maritime service?

• A. 0.4 kHz
• B. 0.2 kHz
• C. Minimum necessary to complete necessary communications
• D. 1 kHz

Answer: (A)

The maximum authorized bandwidth of a high frequency radiotelegraphy signal, specifically emission A1A, in the maritime service is 0.4 kHz. This bandwidth is established by regulations that aim to ensure efficient use of the allocated frequencies and to minimize interference between adjacent stations operating close together in frequency. In the context of maritime communication, the narrow bandwidth allows for clear and concise transmission of data, especially important in situations where clarity may be crucial for safety. The specifications regarding bandwidth are also intended to conform with international standards set by organizations like the International Telecommunication Union (ITU) to facilitate global communication protocols. Selecting any other bandwidth measurements given would not comply with the regulations set for A1A emissions in the maritime service. For example, while 1 kHz is a broader bandwidth, it exceeds the limits established for this type of emission, which can lead to increased interference and is not permitted under the maritime communications guidelines.

The maximum authorized bandwidth of a high frequency radiotelegraphy signal, specifically emission A1A, in the maritime service is 0.4 kHz. This bandwidth is established by regulations that aim to ensure efficient use of the allocated frequencies and to minimize interference between adjacent stations operating close together in frequency.

In the context of maritime communication, the narrow bandwidth allows for clear and concise transmission of data, especially important in situations where clarity may be crucial for safety. The specifications regarding bandwidth are also intended to conform with international standards set by organizations like the International Telecommunication Union (ITU) to facilitate global communication protocols.

Selecting any other bandwidth measurements given would not comply with the regulations set for A1A emissions in the maritime service. For example, while 1 kHz is a broader bandwidth, it exceeds the limits established for this type of emission, which can lead to increased interference and is not permitted under the maritime communications guidelines.