POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints
each of Joshua Koenig and Rafael Rosillo, signing singly, the undersigned's true
and lawful attorney-in-fact to:

1. execute for and on behalf of the undersigned, in any and all capacities, Form
ID, including other documents necessary to obtain EDGAR codes and passwords
enabling the undersigned to make electronic filings with the United States
Securities and Exchange Commission (the "Commission"), Form 144 in accordance
with Rule 144 under and Forms 3, 4, and 5 in accordance with Section 16(a) of
the Securities Exchange Act of 1934 and the rules thereunder as well as a
Schedule 13D or Schedule 13G and any amendments thereto (collectively, the
"Required Filings");

2. do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Required Filings,
complete and execute any amendment or amendments thereto, and timely file such
form with the Commission and any stock exchange or similar authority;

3. seek or obtain, as the undersigned's representative and on the undersigned's
behalf, information regarding transactions in the securities of SBA
Communications Corporation (the "Company") from any third party, including
brokers, employee benefit plan administrators and trustees, and the undersigned
hereby authorizes any such person to release any such information to such
attorney-in-fact and approves and ratifies any such release of information; and

4. take any other action of any type whatsoever in connection with the foregoing
which, in the opinion of such attorney-in-fact, may be of benefit to, in the
best interest of, or legally required by, the undersigned, it being understood
that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this Power of Attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Securities Exchange Act of 1934, as amended.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Form 144, Forms 3, 4, and 5 and
Schedule 13D or Schedule 13G with respect to the undersigned's holdings of and
transactions in securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 25th day of February, 2023.


/s/ Fidelma Russo
Name:  Fidelma Russo