Unveiling a strategy for the military's use of spectrum, officials said the approach is designed to balance the needs of commercial firms while also providing for the Pentagon's growing appetite for spectrum.
But defense officials offered no specific numbers or time table about how much bandwidth it would be willing to share or "vacate."
The Pentagon's blueprint follows a 2010 decision from President Barack Obama that calls for a total of 500 MHz of spectrum to be unlocked by 2020.
But the wireless industry is pressing the federal government to open up more "real estate" on the spectrum, arguing additional bandwidth is crucial to ensure growth in a vital economic sector.
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The Defense Department has faced criticism that it has been reluctant to relinquish exclusive access to valuable airwaves that remain off limits to industry.
About 18 per cent of the most highly coveted portion of spectrum, between 300 MHz and 3 GHz, is currently reserved solely for the federal government, including the military.
Over the past decade, the Pentagon has already unlocked some frequencies, either withdrawing from the airwaves or sharing access with industry.
"It's a balance, obviously, between the commercial needs and the needs of national security," said Major General Robert Wheeler, who helped present the strategy document at a briefing today.