
Introduction
This booklet is a supplement to your main user guide:
®
ASTRO
ASTRO® XTS™ 2500 / XTS™ 2500I Model I.5
ASTRO® XTS™ 2500 / XTS™ 2500I Model II
ASTRO® XTS™ 2500 / XTS™ 2500I Model III
It only contains the information pertaining to secure
operations. For all other features and explanations,
please refer to your main user guide.
XTS™ 2250 / XTS™ 2250I
2

Product Safety and RF Exposure Compliance
Before using this product, read the operating instructions for safe
!
usage contained in the Product Safety and RF Exposure booklet
Caution
enclosed with your radio.
ATTENTION!
This radio is restricted to occupational use only to satisfy FCC RF energy
exposure requirements. Before using this product, read the RF energy
awareness information and operating instructions in the Product Safety and RF
Exposure booklet enclosed with your radio (Motorola Publication part number
68P81095C98) to ensure compliance with RF energy exposure limits.
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola
computer programs stored in semiconductor memories or other media. Laws in the
United States and other countries preserve for Motorola certain exclusive rights for
copyrighted computer programs, including, but not limited to, the exclusive right to copy
or reproduce in any form the copyrighted computer program. Accordingly, any
copyrighted Motorola computer programs contained in the Motorola products described
in this manual may not be copied, reproduced, modified, reverse-engineered, or
distributed in any manner without the express written permission of Motorola.
Furthermore, the purchase of Motorola products shall not be deemed to grant either
directly or by implication, estoppel, or otherwise, any license under the copyrights,
patents or patent applications of Motorola, except for the normal non-exclusive license
to use that arises by operation of law in the sale of a product.
Documentation Copyrights
No duplication or distribution of this document or any portion thereof shall take place
without the express written permission of Motorola. No part of this manual may be
reproduced, distributed, or transmitted in any form or by any means, electronic or
mechanical, for any purpose without the express written permission of Motorola.
Disclaimer
The information in this document is carefully examined, and is believed to be entirely
reliable. However, no responsibility is assumed for inaccuracies. Furthermore, Motorola
reserves the right to make changes to any products herein to improve readability,
function, or design. Motorola does not assume any liability arising out of the
applications or use of any product or circuit described herein; nor does it cover any
license under its patent rights, nor the rights of others.
MOTOROLA, the Stylized M Logo and ASTRO are registered in the U.S. Patent &
Trademark Office. All other product or service names are the property of their
respective owners.
© Motorola, Inc. 2006. All Rights Reserved. Printed in the U.S.A.
3

Secure Operations
Secure radio operation provides the highest commercially available
level of voice security on both trunked and conventional channels.
Unlike other forms of security, Motorola digital encryption provides
signaling that makes it virtually impossible for others to decode any
part of an encrypted message.
Select Secure Transmissions
Turn the preprogrammed Secure/Clear switch to
position A.
Note: If the selected channel
is programmed for clearonly operation — when
you press the PTT
button, you see CLR TX
ONLY, and you hear an
invalid mode tone.
The radio will not transmit until you set the Secure/
Clear switch to position B or C.
CLR TX ONLY
• Invalid mode tone
Select Clear Transmissions
Turn the preprogrammed Secure/Clear switch to either
position B or C.
Note: If the selected channel
is programmed for
secure-only operation —
when you press the PTT
button, you see SEC TX
ONLY, and you hear an
invalid mode tone.
The radio will not transmit until you set the Secure/
Clear switch to position A.
SEC TX ONLY
• Invalid mode tone
4