FOR YEARS, people have cursed lousy, expensive Wi-Fi on airplanes, with most of the ire directed at Gogo, the largest player in the field.

www.gogoair.com

Soon there may be fewer F-bombs dropped at 35,000 feet. Gogo is maturing into the world of broadband satellite coverage in a technology shift that will offer fliers greater bandwidth and vastly broader geographic coverage.

鈥淏andwidth equals revenue. Bandwidth equals better customer service,鈥 Chief Executive Officer Michael Small said in an interview at Gogo鈥檚 downtown Chicago headquarters. 鈥淚t鈥檚 literally that simple.鈥

The new system is called 2Ku, because it offers two antenna arrays to receive and send on the Ku band spectrum. Gogo says its system protrudes only 6.5 inches above the airframe, reducing drag.

On Nov. 13, Gogo demonstrated 2Ku for reporters aboard its Boeing 737 test airplane 鈥 dubbed Jimmy Ray, after the company鈥檚 founder 鈥 with two flights around Indiana. Two dozen aviation and technology reporters trooped aboard Jimmy Ray with an arsenal of gadgets, eager to hurl the most data-intensive activities 鈥 Netflix, Facetime, YouTube, Periscope 鈥 at Gogo鈥檚 new technology. It was a small horde of 鈥渄ata-hungry journalists on board all trying to kill the system,鈥 said Jason Rabinowitz, manager of data research for Routehappy, a travel start-up.

Gogo鈥檚 new product acquitted itself admirably, with high-definition YouTube videos streaming just fine. The biggest hiccup on the test flight appeared to be page-load latency, a bit of a hesitation before many Web pages loaded. Once loaded, they worked fine, too.

Gogo touts the dual-band Ku service as capable of delivering top speeds of 70 megabits per second (Mbps), compared to the 9.8 Mbps of its former speed leader, a ground-based technology called ATG4. Over time, as satellite-beaming techniques are perfected, 100Mbps will be possible, Mr. Small said.

Two other big questions remain. How will the system fare on flights with hundreds of gadget-toting passengers? The company says it has stressed 2Ku on numerous test flights with dozens of devices across a range of locations and hasn鈥檛 found bandwidth problems. What will airlines charge for it? Unless you鈥檙e sitting in first class, free is almost certainly not on the price menu. Mr. Small said the company isn鈥檛 ready to discuss pricing.

Aeromexico received regulatory certification on Nov. 12 and is expected to begin flying the first 2Ku-equipped jets within weeks, followed by Virgin Atlantic. Delta Air Lines is the largest US customer to sign up for the service; a portion of its fleet should have faster Wi-Fi speeds in 2016. The bulk of Gogo鈥檚 550-plane 2Ku backlog from eight airline customers will be completed in 2017 and 2018, Small said.

The new service was announced in April of last year and is hitting the aviation market as Gogo鈥檚 dominance of the in-flight Wi-Fi industry is under assault by several rivals, including ViaSat, Panasonic, and Global Eagle Entertainment.

Gogo launched in 2011 but grew out of Aircell, the seat-back phone of the 1990s. It posted revenue of $126 million for the third quarter, up 22% from a year earlier, and a net loss of $29 million.

Gogo has struggled with its ground-based cell towers, which can鈥檛 match the speed of a satellite connection. The lack of capacity has forced it to charge as much as $40 on some flights, which helps reserve bandwidth for the passengers who will pay for it. The turn toward satellite is also the only way Gogo could ever hope to credibly expand its franchise outside the United States. Greater bandwidth is long overdue for both customers and shareholders. Gogo shares are down 5% this year.

Unlike Gogo, ViaSat owns and operates its own satellites and has used that business 鈥 and customers鈥 frustration with Gogo 鈥 to edge into the in-flight Wi-Fi market. It has equipped JetBlue鈥檚 fleet and large portions of United Airlines鈥 fleet, and is making a big push worldwide. ViaSat鈥檚 Ka-band system is offered free on JetBlue (funded by Amazon) with speeds that can top the new Gogo system.

But Gogo contracts with multiple satellite providers for 2Ku, which gives the company much greater geographic coverage around the globe than ViaSat enjoys. Gogo says the 2Ku system will cover 98% of commercial tracks. It won鈥檛 work on routes that traverse the Arctic Circle, including many US-Asia flights.

Beyond consumer uses, Gogo sees higher bandwidth as the gateway to a range of new business opportunities, from greater tools for pilots to aircraft maintenance monitoring. Within 20 years, Mr. Small said, such data transmission will make up the largest aspect of Gogo鈥檚 revenue, surpassing consumer Wi-Fi access.

鈥淚f anything needs to be connected,鈥 Mr. Small said, 鈥渋t鈥檚 an aircraft.鈥 鈥 Bloomberg