Google on Friday announced it plans to bid on the spectrum, often called "beach front" property because it can carry wireless broadband signals three to four times farther than some other spectrum bands. An AT&T spokesman on Monday confirmed the company's earlier statements saying it intends to bid.

A Verizon Wireless spokeswoman declined to comment on the company's bidding plans. Verizon in September had filed a lawsuit against the FCC for its so-called open-access requirements on about a third of the 62MHz of spectrum to be auctioned starting in late January. But last week the company announced it would open up its existing network to outside wireless devices and applications starting in 2008. So Verizon's objections to the FCC's similar open-access rules seem to have subsided.

Sprint Nextel does not plan to participate, a spokesman said. "Sprint has all the spectrum it needs to meet its strategic business needs," spokesman Scott Sloat said.

Startup Frontline Wireless, made up of wireless industry and government veterans, has also indicated it plans to bid in the auctions. There could be dozens of other bidders, including regional wireless carriers and broadband providers.

What happens now?

The FCC plans to make the names of the auction applicants public by Dec. 28. For one of the first times, the FCC is conducting an anonymous bidding process, so it will not disclose what sections of spectrum applicants intend to bid on.

The auctions begin on Jan. 24, but they could last several weeks. Auctions go on as long as bidders keep bidding; the FCC's last major auctions, its advanced wireless services auctions in 2006, lasted about five weeks. If reserve prices aren't met on parts of spectrum, the FCC will re-auction those bands.

The auction is conducted electronically with numerous rounds per day, with time frames for rounds growing shorter as bidding activity heats up.

Why is This Auction Important?

The 700MHz auctions represent the last large chunk of spectrum available for the FCC to auction in the foreseeable future. In addition, the spectrum, now used to carry over-the-air television signals, can be used to carry long-range wireless broadband traffic. Many people, including FCC Chairman Kevin Martin have said the auction represents a golden opportunity to create a nationwide broadband network in competition with the providers of cable modem and DSL (Digital Subscriber Line) and fiber-based services.