JOINT FILING AGREEMENT
Exhibit 1
This Joint Filing Agreement (this “Agreement”) is entered into as of February 7, 2006 by and
between NexGen Technologies, L.L.C., a limited liability company organized under the laws of the
State of Maryland (“NexGen”), and Xxxxx X. Xxxx, an individual United States citizen (“Xxxx”).
NexGen and Xxxx hereby agree to jointly prepare and timely file (or otherwise deliver, as
appropriate) all statements on Schedule 13D or amendments thereto (“13D Filings”) required to be
filed by them pursuant to the Securities Exchange Act of 1934, as amended, with respect to their
respective ownership of common shares, par value $.01 per share, of Aether Systems, Inc., and each
of them mutually covenants to the other that they will fully cooperate with each other in the
preparation and timely filing of all such 13D Filings.
IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first above
set forth.
| NEXGEN TECHNOLOGIES, L.L.C. |
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| By: | /s/ XXXXX X. XXXX | |||
| /s/ Xxxxx X. Xxxx | ||||
| Its: Managing Member | ||||
| /s/ Xxxxx X. Xxxx | ||||
| Xxxxx X. Xxxx | ||||
