The right connections

Want to run the Jet ConneX broadband service on your business jet? Here’s how.

Inflight broadband on business jets is no longer a luxury, it’s a necessity. Business passengers want VIP service in just about everything they do, including their inflight Wi-Fi. It needs to be fast, reliable and consistent – around-the-clock, everywhere and anywhere. Inmarsat’s Jet ConneX fulfils those needs.

It’s the world’s only high-speed broadband service for business jets. Powered by Inmarsat’s wholly-owned Global Xpress satellite network, it uses the Ka-band frequency and spot-beam technology to give business flyers the internet speed and reliability that they’d expect in their office.

The Global Xpress satellite network comprises four satellites that cover the globe. Our next three satellites (GX-5, I-6 F1 and I-6 F2) will all deliver further Ka-band bandwidth, providing additional Global Xpress capacity in regions of highest demand.  The first of these, GX-5, is scheduled to launch in 2019.

Each current satellite operates 89 highly efficient Ka-band spot beams supplemented by the network’s 24 unique steerable beams. These steerable beams, three times as powerful as spot beams, can direct additional capacity to high-traffic airspace during peak times giving greater ‘regional depth’. It means high traffic routes like the North Atlantic or American East Coast can be covered more effectively.

With several hundred systems already installed and flying, the Jet ConneX service is ready to go. Here’s the hardware that can make it happen.

The equipment

Inmarsat has partnered with Honeywell for its connectivity equipment needs. The following kit helps to create a seamless inflight broadband experience, offering business flyers data rates up to 15Mbps – with the industry’s only data rate guarantee. Installation can be slotted in to fit with regular maintenance or inspection schedules.

Honeywell JetWave tail mount antenna

The beams are received by Honeywell’s JetWave antenna, mounted on the exterior of the aircraft (tail-mount or fuselage, depending on aircraft type) and protected by a streamlined radome.

Ka-band frequency unit

Alongside the antenna the KRFU, or Ka-band radio frequency unit, controls and converts the throughput on the antenna, and is a high-power amplifier for transmitting the signal.


The KANDU (Ka-band network data unit) provides power and positioning control to the antenna, and interfaces with the KRFU – it also takes the data through from the antenna to the modem manager.


The MODMAN (modem manager) is the overall system controller – it controls the KRFU and through it the antenna, and provides user interfaces and built-in tests for the whole system.

The Aircraft Personality Module (APM) plugs into the MODMAN and stores airframe and customer specific information for the terminal equipment, such as user operational preferences.

The MODMAN contains the iDirect modem which feeds through to the onboard router providing Wi-Fi  to passengers in the cabin.

The equipment is lightweight – to minimise fuel burn – and robust, which maximises time between maintenance. And, for installation, the receivers can be fitted with standard tools, minimal labour and much less downtime than other terminals. It takes days, not weeks, to get fully connected.

Just like Inmarsat’s Global Xpress network, Jet Connex's onboard hardware is continually being optimised, to ensure private and business jet operators will face the future with confidence. Because business leaders deserve a leading-edge service.

Ka-band Satcom Terminal
Network Support
Operates on Inmarsat Aviation's Global Xpress Ka-band network
Fuselage-mounted antenna (MCS-8100) or Tail-mounted antenna (MCS-8000)
Both systems include a common RF and antenna controller, modem & router
Maximum Bit Rates
Tail Antenna System:
To aircraft 4.6 - 15 Mbits/sec
From aircraft 0.45 - 1.0 Mbits/sec
AC Power
Multi Ethernet data
ARINC 429 from aircraft navigation bus
System Hardware
- Size 5.0" x 15.2" x 7.5" 4 MCU
- Weight: 14.0 lbs
- Size: 2.0" x 16.6" x 9.0"
- Weight: 11.2 lbs
- Size 10.0" x 9.1" x 4.8”
- Weight: 0.75 lbs
- Size 4.5" x 4.0" x 1.3”
- Weight: 8.8 lbs
Fuselage Mount Antenna
- Size: 37" swept volume x 9" high
- Weight: 83.0 lbs
Tail Mount Antenna
- Size: 17.24" x 12.0" x 13.58"
- Weight: 10.0 lbs
Honeywell Jetwave fuselage antenna

No drop-offs: only reliable connectivity

Thanks to its dual receivers, JetWave enables critical ‘make before break’ handoffs between satellite beams. This is unique. Other solutions have built-in outages every time a terminal needs to be ‘handed off’ between satellites, adding significant service interruption and downtime for users.

Supplemental Type Certificates

STCs (Supplemental Type Certificates) already exist for over 30 aircraft from all major manufacturers. STC updates are issued regularly. 


Complete by OEM

Expected Q2 2018 Standard Aero

G7000/8000 Expected Q4 2017 by OEM
CL604/605 Complete by OEM
CL650 Completed by BAS
Completed by OEM
G650 Completed by OEM
G600 Completed by OEM
G550 Completed by OEM
G500 Completed by OEM
G450 Expected Q3 2017 by OEM
G3 Completed by Standard Aero
G4 Completed by Standard Aero
Expected Q4 2018 by OEM
G5 Completed by Standard Aero
A310 Expected Q4 2017 by RCI
A319 Completed by OEM, Jet Aviation and LHT
A320 Completed by AAC and LHT
A321 Completed by LHT
A330 / A340 Completed by AMAC, Jet Aviation, LHT and Sabena Technics
A330 Completed by EAD
737-700 Completed by AMAC, Jet Av and LHT
737-900 Completed by AMAC
747-400 Expected Q4 2017 by Jet Av
757 Completed by HON
767-300 Completed by RCI
767 Expected 2018 by Jet Av
777 Completed by AMAC
Expected Q4 2017 by GDC
787 Expected Q4 2017 by GDC
7X Completed by DAS Wilmington
Expected Q2 2018 by OEM
8X Expected Q2 2018 by OEM
F900 Completed by Standard Aero
Expected Q3 2018 by OEM
F2000 Expected Q3 2018 by OEM

The equipment is also certified by the Federal Aviation Administration (FAA) and European Aviation Safety Agency (EASA) for safety, environmental and installation standards. 

Who do I buy the Jet ConneX service from?

Inmarsat has a global network of four specialist distribution partners (DPs). They offer several package options on a monthly subscription basis which include technical support, billing and services designed to manage usage and optimise bandwidth. They can also help with installation, cyber security and supporting equipment such as Apple TV and Slingbox.

Rockwell Collins/ARINC Direct                                                                 

Satcom Direct (SD)           

Honeywell GoDirect