Motorola ASTRO Digital Spectra User Manual

Appendix A Secure Modules
A.1 Introduction
The secure modules are designed to digitally encrypt and decrypt voice and ASTRO data in ASTRO
Digital Spectra and Digital Spectra Plus mobile radios. This section covers the following secure
modules:
:
NOTE: The secure module is NOT serviceable. The information contained in this section is only
meant to help determine whether a problem is due to the secure module or the radio itself.
The secure module uses a custom encryption integrated circuit (IC) and an encryption key variable
to perform its encode/decode function. The encryption key variable is loaded into the secure module,
via the radio’s microphone connector, from a hand-held key-variable loader (KVL). The encryption IC
corresponds to the particular encryption algorithm purchased. The encryption algorithms and their
corresponding kit numbers are listed in the above table.
NOTE: When ordering replacement modules, make sure that the kit and board numbers of the
module that is ordered are the same as those of the module that is being replaced.
Table A-1. ASTRO Digital Spectra Secure Modules
KIT NO. ENCRYPTION TYPE
HLN1441 DES, DES-XL, DES-OFB
NTN1158 DVI-XL
NTN1147 DVP-XL
NTN1369 DES-XL , DVP-XL
NTN1565 DES-OFB, DVP-XL
Table A-2. ASTRO Digital Spectra Plus Secure Modules
KIT NO. ENCRYPTION TYPE
NNTN4024A DES, DES-XL, DES-OFB
NNTN4025A DVI-XL
NNTN4026A DVP-XL
NNTN4027A DES, DES-XL , DES-OFB
with DVP-XL Encryption Kit

Motorola ASTRO Digital Spectra Specifications

General

Brand	Motorola
Model	ASTRO Digital Spectra
Category	Radio
Language	English