Advanced Radio Telecom Elects Robert S. McCambridge President and Chief Operating Officer.

BELLEVUE, Wash.--(BUSINESS WIRE)--Dec. 7, 1999--

Advanced Radio Telecom Corp. (Nasdaq:ARTT), a broadband wireless Internet Protocol service provider (IPSP), today announced that Robert S. McCambridge has been elected president and chief operating officer.

McCambridge, who has been acting as interim and chief executive officer since November 1, will continue in that role until a new chairman and CEO is named. ART also plans to name a CFO replacement soon.

"The ART Board of Directors is extraordinarily confident in Bob's ability to lead the company's operations," said Bandel Carano, an ART director and general partner at Oak Investment Partners. "Bob played a key role in establishing ART's operating strategy and was responsible for securing more than $425 million in growth capital. Taking on the president and COO responsibility is a natural evolution for Bob as ART accelerates its execution phase."

"We value our relationship with ART as part of Qwest's overall objective to provide advanced local broadband communications to business and consumers," said Joseph P. Nacchio, chairman and CEO of Qwest Communications Inc., an ART investor and strategic partner. "We look forward to working with Bob in his new role as we continue to connect ART's local broadband access wireless networks with Qwest's leading-edge nationwide Internet network."

McCambridge joined ART as EVP and CFO in November 1998 with more than 15 years of management experience with technology companies. Before joining ART, McCambridge was executive vice president of OneComm, formerly Cable Plus Holding Company, headquartered in Bellevue, Wash. Prior to OneComm, McCambridge was treasurer and vice president of corporate development for Control Data Corp., where he managed the highly successful restructuring, re-capitalization and growth model that created Ceridian Corp. and Control Data Systems.

About Advanced Radio Telecom

Advanced Radio Telecom Corp. (Nasdaq:ARTT), headquartered in Bellevue, Wash., is a provider of local Internet Protocol (IP) services at speeds up to 100Mbps. ART currently owns and operates broadband wireless metropolitan area networks in San Jose, Seattle, Portland, and Phoenix. ART has a strategic relationship with Qwest Communications International Inc. (Nasdaq:QWST), which includes Qwest Private Line, ART Broadband Services, Co-marketing and Co-location agreements. ART investors include Qwest and a number of high tech investment funds including Oak Investment Partners, MeriTech Capital Partners, Accel Partners, Brentwood Venture Capital, Worldview Technology Partners, Columbia Capital, Advent International, GE Equity, KPN, Sonera, Bessemer Venture Capital, and Adams Capital Management. ART has a nationwide footprint of 38GHz spectrum licenses in the United States, and owns 26GHz and/or 38GHz spectrum licenses in the United Kingdom and several Scandinavian countries. For more information, please visit ART's web site at www.art-net.net.

The above information includes forward-looking statements regarding and the hiring of a new executive, and the scope and timing of network deployment. These statements are not guarantees of future performance. Known and unknown risks, uncertainties, and other factors, including without limitation, capital requirements and other financial risks, customer demand, technological risks, management of growth, ability to achieve Year 2000 compliance, competition and government regulation may cause actual results to differ materially from the future results implied or expressed in the forward looking statements. Additional information about the most significant of such factors is set forth in ART's most recent annual report on Form 10-K. The Company does not undertake to update or revise its forward-looking statements publicly even if experience or future changes make clear that any projected results expressed or implied herein will not be realized.