NPFC - MIL-T-28842
TELEPHONE SETS, TA-970/U, AND TA-990/U
| Organization: | NPFC |
| Publication Date: | 11 May 1981 |
| Status: | inactive |
| Page Count: | 17 |
scope:
This specification covers the performance, production, and testing requirements for Telephone Sets TA-970/U, TA-980/U, and TA-990/U for use with shipboard secure voice communications systems.
The telephone sets shall be of the following types, as specified (see 6.2.1):
a. Type I - TA-970/U. The TA-970/U provides telephone and control capability for one telephone channel only.
b. Type II - TA-980/U. The TA-980/U provides telephone and control capability for one of twelve switch selected telephone channels.
c. Type III - TA-990/U. The TA-990/U provides telephone and control capability for one telephone channel only.
intended Use:
The telephone set covered by this specification is intended for use in a voice communications system on all ship types. It will provide an operator the capability to transmit either in a secure... View More
Document History
