Towering Demand For Wireless

Several portions of the economy bypassed the U.S. recession three years ago and its subsequent baby-step recovery. Farm incomes soared steadily throughout. The domestic U.S. energy sector boomed and remains starved for skilled workers.

In technology, Americans continue to gorge on mobile gadgets and wireless data. Sales of smartphones, tablet computers and other devices using mobile Internet connections have grown at double-digit rates per quarter ever since Apple introduced the very smart iPhone in 2007, followed by its revolutionary tablet computers.

Consumers gobbled up more than 1.1 trillion megabytes of data for the 12-month period ended in June, according to the latest survey by CTIA — The Wireless Association. That's up 104% from the same period in the prior year.

The report also said about 41% of mobile users now own a smartphone nationally. AT&T (NYSE:T) said about 64% of its customers, at the end of September, were smartphones users. At Verizon Communications, (VZ) it's about 53%.

Keeping pace with this traffic requires substantial investments in wireless infrastructure. One of the most basic needs are cell sites, which are primarily the towers in cities and along roadways that hold the cellular transmission and reception equipment.

The three largest providers of cell-phone towers in the U.S. are American Tower (AMT), Crown Castle International (CCI) and SBA Communications (SBAC).

All three stocks have soared in the past year. That, in turn, has boosted the Telecom Services — Wireless group to a No. 32 ranking among the 197 industries tracked by IBD.

More Wireless Wireless networks are expanding coverage — the area served by their specific service. Many are also advancing into faster 4G networks and 4G LTE, also known as long-term evolution, the highest grade of 4G.

Both of these trends have helped accelerate the demand for towers.

In addition, as wireless data speeds have increased, so have software applications. Today's technology and software put what once would have been considered supercomputers into the pockets of consumers.

Those devices demand more speed as well as more capacity from network service providers.

"Across the spectrum all wireless providers are in the midst of significant upgrades to 4G, a process that benefits the tower companies," said Michael McCormack, analyst with Nomura Equity Research. "We continue to see strong demand in subscriber growth and data usage.

Verizon reports that sales of 4G LTE mobile devices have risen steadily every quarter since it first launched the service in late 2010. It now has 15 million customers with 4G LTE phones and devices.