EXHIBIT A

Joint Filing Agreement

The undersigned persons, on February 17, 2004, agree and consent to the joint filing on their behalf of this Amendment No. 4 to Schedule 13G in connection with their beneficial ownership of the Class A Common Stock of SBA Communications Corporation at December 31, 2003.

/s/ Steven E. Bernstein

Steven E. Bernstein

BERNSTEIN FAMILY LIMITED PARTNERSHIP II

/s/  Steven E. Bernstein

By: Steven E. Bernstein,

Sole Shareholder of Bernstein Investment

Company II, Inc., its General Partner