Section II. DESCRIPTION AND DATA - TM-11-5895-490-200011

NAVELEX 0967-LP-217-401/TM 11-5895-490-20

Section II. DESCRIPTION AND DATA

1-4. Purpose and Use

system. The RT-859/APX-72 receives, decodes, and

a. Receiver-Transmitter, Radio RT-859/APX-72

responds to the characteristic interrogations of

or RT-859A/APX-72 (RT-859/APX-72) when used

operational modes 1, 2, 3/A, C and 4. The receiver

with auxillary equipment described in paragraph

section operates on a frequency of 1080 megahertz

1-8, provides automatic radar identification of

(MHz) and the transmitter section operates on a

aircraft or surface vessel to all suitably equipped

frequency of 1090 MHz. Specially coded identifica-

challenging aircraft, surface ships, and ground

tion of position (1P) and emergency.

facilities within the operational range of the

1-1.1

Change 2