Earth Stations In Motion (ESIM) is a device installed on mobile objects for land, air, and sea transportation to support connectivity and communication.
Earth Stations In Motion provides communication in locations not covered by terrestrial networks, such as at sea or in the air.
Are you familiar with this device? This article will inform you about Earth Stations In Motion from its definition, function, application examples, and its regulation in Indonesia.
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Table of Contents
What is an Earth Stations In Motion?

Earth Stations In Motion (ESIM) are earth station terminals that can be moved or mounted on a moving object such as a ship, plane, or land vehicle. These devices will communicate with satellites in fixed services using small directionality to provide broadband communication services.
ESIMs operate at specific frequencies, such as 19.7-20.2 GHz and 29.5-30.0 GHz in the Ku frequency band. ESIMs can operate in national and international waters, as well as in various locations around the world.
The Function of Earth Stations In Motion
The main function of an Earth Stations In Motion (ESIM)is to provide broadband communication services on mobile objects. Here are some functions you can enjoy:
- Communicate with satellites: Transmits signals to the satellite (uplink) and receives signals from the satellite (downlink).
- Provides communication in remote and mobile areas: Enables communication in locations not covered by terrestrial networks, such as at sea or in the air.
- Overcomes terrestrial coverage limitations: As a solution, when ground networks cannot reach certain areas.
The Application Example of Earth Stations In Motion

With many functions provided by Earth Stations In Motion (ESIM), this tool is applied in several sectors such as maritime, aviation, military and defense, and emergency services. The following are examples of the application of ESIM:
Maritime
ESIMs on marine vessels serve to stay connected to land. ESIM provides internet connectivity for communications at sea, allowing for access to information, navigation, emergency communications, and entertainment.
Aviation
ESIMs on aircraft are utilized for internet connectivity. ESIM provides in-flight communication services for passengers and crew, as well as for aircraft operational purposes.
Land transportation
ESIMs in land vehicles provide internet connectivity and digital services to passengers. ESIMs used in trains or buses can also be used for fleet tracking and management.
Military and defense applications
ESIMs in military and defense applications serve to provide secure and reliable communications on the battlefield or in remote areas. ESIM is also used in reconnaissance, surveillance, command, control, and navigation.
Provision of emergency services
ESIM in emergency services such as natural disasters can be used to provide communication services and critical information in the affected areas. ESIM assists telemedicine services that allow doctors to provide remote consultations in disaster areas.
Earth Stations In Motion Regulation in Indonesia

The earth stations in motion use wireless communication technologies that operate within a specific frequency spectrum. In Indonesia, a wireless device is required to have a DJID (Directorate General of Digital Infrastructure) under the Ministry of Communication and Digital (KOMDIGI).
Earth stations in motion regulation is based on Director General Regulation (PERDIRJEN) No. 101 Tahun 2007, which requires all radio frequency-based devices to meet specific technical standards before being sold in the country.
The DJID certification ensures that the product meets government safety and quality regulations and does not interfere with other communication devices. The certification process involves technical testing, such as frequency adjustments, safety checks, and compatibility with the surrounding environment.
Once the tests are completed, products that pass are listed in a Test Result Report, which confirms that the product is safe and ready for sale in Indonesia. This report reassures customers that the product meets technical standards and is secure.
For companies wanting to sell earth stations in motion in Indonesia, Type Approval Certification Services for ICT Products are available to assist with this process. This service includes preparing technical and legal documents, conducting required testing, ensuring compliance with regulations, helping companies streamline the certification process, and giving consumers confidence in certified products. -UN.










