In-flight WiFi may sound like a great way to keep in touch with friends and family or catch up on work, butservicesare often so slow, you're better off sticking to the in-flight magazine.

Newsatellite-based WiFiservicespromise to change that, prompting a grab for capacity and customers by companies such as Inmarsat Plc, Viasat Inc, Gogo Inc, Panasonic and Global Eagle Entertainment Inc.

WiFi on U.S. domestic routes is already widespread although air-to-ground (ATG) technology can mean service is slow. In Europe, a patchwork of regulatory regimes has hindered the creation of any substantial ATG networks, whilesatellite-based systems have until now been too expensive for short-haul routes.

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Satellite-based systems can provide coverage across the whole world, including over oceans, where ATG falls short. Additional beams are typically overlaid to follow traffic flows, to provide extra broadband capacity for more congested flight areas.

Inmarsat, long a provider ofsatellitecommunications to the maritime industry, has spent five years building its Global Express network for aviation. Final ground and flight testing is underway, with threesatellites already in service.

"Existing solutions have not metmarketexpectations ... Despite all of the happy talk, the state of play is an inconsistent patchwork," Leo Mondale, president of Inmarsat Aviation, said at the Aircraft Interiors Expo in Hamburg.

U.S.-based rival Viasat is launching two new high-poweredsatellites that it says will significantly improve broadband speeds from next year.

According to a 2016 global report by Routehappy, which rates flight amenities, travelers currently have a chance of getting WiFi on more than one-third of available seats worldwide, with around 60 airlines offering the service.

But just 6 percent of the flights with WiFi have connectivity that is comparable to a home broadband service and which allows for data-rich usage such as video streaming.

It's not just passengers who like WiFi on board. It can also be used in the cockpit to identify weather patterns, optimize routes, and for quick identification and reporting of maintenance issues, Carl Esposito, vice president ofmarketing and product management at Honeywell Aerospace, told Reuters.

Honeywell teams with Inmarsat to provide the hardware for airlines to connect to the Global Express network.

In the cabin, having WiFi connected systems also makes for easier upgrades of in-flight entertainment and can bring in more revenues from entertainment,servicesand advertising.

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Competition from newsatellite-basedserviceshas put more established aviation connectivity providers under pressure.

Shares in Gogo, which provides in-flight WiFi in North America using ATG technology, fell in February after American Airlines threatened to end its contract via a lawsuit, saying that the Viasat service was superior.

Gogo is working on its ownsatellite-based service, known as 2Ku, and in February signed a deal withsatelliteoperator SES to provide extra capacity.

Gogo has put forward a 2Ku proposal for 200 aircraft for AA, although no decisions have been made yet, Gogo president Michael Small said in an statement to Reuters.

Rival Panasonic is also looking at commissioning entiresatellitepayloads as it seeks more capacity for its existing global network, David Bruner, vice president of global communicationsservicesat Panasonic Avionics, told Reuters.

Bruner said the aviation connectivitymarkethad becomehyper-competitive in terms of pricing and that there were too many players fighting over too few planes.

Inmarsat, which has signed up Lufthansa and Singapore Airlines to its network, highlighted price pressure in the industry when it reported results last month.

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"There probably needs to be some consolidation," Bruner said, adding there was space for three or four providers and that each would need to serve about 1,500 aircraft to break even onsatellite-basedservices.

Panasonic has signed up 3,000 aircraft, with 1,100 in service, he said. Gogo's 2Ku has commitments for over 850 aircraft and expects to have 75 installed this year, while Inmarsat has over 300 for Global Express and says more are tocome.

Bruner said the AA and Gogo row showed that older systems in place in North America were ripe for replacement and that there would be a real fight for contracts.

"I think it will be a really crazy next 24 months. We'll win some and we'll lose some, but it will be interesting," he said.

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