# INSAT-4E

> Indian communication satellite

**Wikidata**: [Q5972416](https://www.wikidata.org/wiki/Q5972416)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/INSAT-4E)  
**Source**: https://4ort.xyz/entity/insat-4e

## Summary
INSAT-4E, also known as GSAT-6, is an Indian communications satellite launched on August 27, 2015. It was developed by the Indian Space Research Organisation (ISRO) and deployed into a geostationary transfer orbit using the Geosynchronous Satellite Launch Vehicle Mark II.

## Key Facts
- Launched on August 27, 2015, from the Satish Dhawan Space Centre Second Launch Pad.
- Mass: 2117 kilograms.
- Alternate name: GSAT-6.
- Operated by the Indian Space Research Organisation (ISRO).
- Launched using the Geosynchronous Satellite Launch Vehicle Mark II.
- COSPAR ID: 2015-041A.
- Instance of: Communications satellite.
- Freebase ID: /m/0j_1lx0.
- Satellite of: Geostationary transfer orbit.
- Country of origin: India.

## FAQs
### Q: What is INSAT-4E used for?
A: INSAT-4E is a communications satellite designed to support telecommunications and broadcasting services in India. Its primary payload includes a 6-meter deployable antenna for mobile communication applications.

### Q: Who built INSAT-4E?
A: INSAT-4E was built by the Indian Space Research Organisation (ISRO), India's national space agency responsible for the country’s space program.

### Q: When was INSAT-4E launched?
A: INSAT-4E was successfully launched on August 27, 2015, from the Satish Dhawan Space Centre in Sriharikota, India.

## Why It Matters
INSAT-4E represents a significant advancement in India’s indigenous satellite communication capabilities. As part of ISRO’s efforts to develop strategic communication systems, it supports secure and reliable mobile communication services across the country. The satellite plays a crucial role in enhancing disaster management, military coordination, and rural connectivity through its S-band transponders and large deployable antenna system. Its successful deployment underscores India’s growing self-reliance in space technology and strengthens its position in the global satellite communications sector.

## Notable For
- Hosts a 6-meter ultra-large deployable antenna for enhanced signal coverage.
- First Indian satellite with a 6-meter unfurlable antenna specifically for mobile communication.
- Designed for strategic use by the Indian armed forces and government agencies.
- Demonstrates ISRO’s capability to build complex communication payloads tailored for national security needs.
- Launched via India’s indigenously developed Geosynchronous Satellite Launch Vehicle Mark II.

## Body
### Overview
INSAT-4E, alternatively designated as GSAT-6, is a communications satellite operated by the Indian Space Research Organisation (ISRO). It serves primarily as a strategic asset for secure mobile communications within India.

### Technical Specifications
- **Mass**: 2117 kg  
- **Orbit Type**: Geostationary Transfer Orbit (GTO)  
- **Primary Payload**: S-band transponder with a 6-meter unfurlable antenna  
- **Purpose**: Strategic mobile communication for governmental and defense purposes  

### Development and Launch
- **Launch Date**: August 27, 2015  
- **Launch Site**: Satish Dhawan Space Centre Second Launch Pad  
- **Launch Vehicle**: Geosynchronous Satellite Launch Vehicle Mark II (GSLV Mk II)  
- **COSPAR ID**: 2015-041A  

### Operational Role
- Managed by ISRO for strategic communication requirements  
- Supports high-power S-band transmissions for mobile users  
- Enhances India’s ability to maintain secure internal communications during emergencies or conflicts  

### Significance in ISRO's Portfolio
- Part of ISRO’s initiative to reduce dependence on foreign satellites for critical communication tasks  
- Represents advancements in domestic spacecraft design and manufacturing capabilities  
- Reinforces India’s technological sovereignty in space-based communication infrastructure

## References

1. [Source](https://www.isro.gov.in/launchers/list-of-gslv-launches)
2. Jonathan's Space Report
3. [Source](https://www.isro.gov.in/spacecraft/list-of-communication-satellites)