Advanced Radio Telecom Announces Receipt of Requisite Consents Pursuant to Consent Solicitation.

BELLEVUE, Wash.--(BUSINESS WIRE)--July 13, 1999--

Advanced Radio Telecom Corp. (Nasdaq:ARTT) announced today that it obtained the requisite consents from the holders of its 14% Senior Notes due 2007 needed to amend the related Indenture pursuant to the consent solicitation that it commenced on June 28, 1999.

Obtaining the consents to the amendments to the Indenture contemplated by the consent solicitation is a condition to the proposed $251 million equity investment in ART by Qwest Communications International Inc., and a group of high-tech investment funds led by Oak Investment Partners.

"With the receipt of these consents from our bondholders, all prerequisites of this financing have been satisfied other than the required shareholder approval and customary closing conditions," said Henry C. (Harry) Hirsch, ART chairman and CEO. "Amending the covenants of this indenture gives us much greater flexibility in financing the rapid growth that we expect over the next several years as we roll out our broadband wireless networks in a number of markets domestically and internationally."

ART will pay a consent fee of $30 for each $1,000 in principal amount of the notes outstanding to each holder of record on June 25, 1999, who properly and timely delivered, and has not revoked, its consent to the proposed amendments.

Questions regarding the consent solicitation should be directed to the solicitation agent Morgan Stanley Dean Witter & Co., at 212/761-2137. Copies of the consent solicitation documents may be obtained by contacting the information agent, MacKenzie Partners, Inc., at 212/929-5500 or 800/322-2885.

About ART

Advanced Radio Telecom, Corp. (Nasdaq:ARTT), headquartered in Bellevue, Wash., is a provider of broadband wireless access to businesses at speeds up to 100Mbps. ART currently owns and operates metropolitan area networks in Seattle, Portland, Ore., and Phoenix with plans to expand to 40 of the top 50 U.S. markets in the next few years. 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 potential financing and deployment. These statements are not guarantees of future performance. Known and unknown risks, uncertainties, and other factors, including without limitation, failure to consummate the financing transaction, capital requirements and other financial risks, customer demand, technological risks, the ability to meet financing conditions, 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.