Subelement C: Equipment Operations— Topic 18: Equipment Faults
Question 1-18C3
Element 1 (MROP)If a ship radio transmitter signal becomes distorted:
Explanation
A distorted ship radio transmitter signal indicates a significant malfunction in the radio equipment. Operating a faulty transmitter can cause harmful interference to other stations, produce illegal spurious emissions, and potentially damage the equipment further. Regulations for all radio services, including maritime and amateur, require stations to cease operations immediately if their transmissions are technically deficient or causing interference until the problem is identified and rectified. This ensures spectrum integrity and communication reliability, which is paramount for safety at sea.
Reducing power (A) only makes a bad signal weaker, not clean, and doesn't eliminate the distortion or spurious emissions. Using minimum modulation (B) or reducing audio amplitude (D) might address specific issues like over-modulation, but a broadly distorted *transmitter signal* implies a deeper hardware fault these adjustments won't fix. Ceasing operations (C) is the responsible and compliant action to prevent interference and maintain regulatory standards.
Related Questions
1-18C1 Under normal circumstances, what do you do if the transmitter aboard your ship is operating offfrequency, overmodulating or distorting?1-18C2 Which would be an indication of proper operation of a SSB transmitter rated at 60 watt PEP output?1-18C4 What would be an indication of a malfunction on a GMDSS station with a 24 VDC battery system?1-18C5 Your antenna tuner becomes totally inoperative. What would you do to obtain operation on both the 8 MHz and 22 MHz frequency bands?1-18C6 Which of the following conditions would be a symptom of malfunction in a 2182 kHz radiotelephone system that must be reported to the Master, then logged appropriately.