Which of the following is NOT one of the four Radio Types?

The SATCOM Radio is not considered one of the four primary radio types typically recognized in standard maritime communications. The four main radio types — VHF, UHF, and HF — each serve specific roles in communication over different ranges and conditions.

VHF (Very High Frequency) radios are widely used for marine communications, especially for ship-to-ship and ship-to-shore communication in coastal areas. UHF (Ultra High Frequency) radios are also used in some maritime scenarios, often for communication that requires shorter distances and higher bandwidth, such as in port operations.

HF (High Frequency) radios are crucial for long-range communication, particularly in vast oceanic areas where VHF and UHF communications may not reach. They can cover thousands of miles and are essential for ships operating far from shore.

On the other hand, SATCOM (Satellite Communication) radios are not included in the traditional list of radio types because they operate via satellites and represent a different technology for communication that transcends the limitations of terrestrial radio frequency propagation. While SATCOM is an important tool in modern maritime operations, it is categorized differently from the conventional radio types.