SAR-DF 517
DV 77513.03 Issue 4 09/2006
Page 1-1
Section
1
General Information
1.1.
Introduction
The SAR-DF 517 4-Band Precision Direction Finder System is described in ”Installation and
Operation” DV 77513.03 and “Maintenance and Repair” DV 77513.04 manuals.
The manuals contain the following sections :
Section
DV 77531.03
DV 77513.04
1
General Information
X
X
2
Installation
X
X
3
Operation
X
X
4
Theory of Operation
X
5
Maintenance and Repair
X
6
Parts List
X
7
Modification and Changes
X
8
Circuit Diagrams
X
1.2.
Purpose
The SAR-DF 517 product is a general direction finder, developed for professional SAR (search
and rescue) purposes. This Direction Finder (DF) is a multiband type (118MHz…410MHz)
working with the physical Doppler-Effect.
It offers the possibility to bear and analyse traditional emergency frequencies in the UHF and
VHF band and the maritime radio band .The Cospas/Sarsat emergency signal is bearable,
despite its very short pulse length, too. It is also possible to decode and display the
Cospas/Sarsat message information.
The excellent bearing result become possible by the newly developed and patented antenna
concept (small, robust and wide-banded) and the sophisticated bearing analys is algorithms
(very complex hardware and software averaging), which deliver a quick, but nevertheless,
steady indication.
The direction finder is designed for working under rough conditions such as mobile uses on
helicopters, airplanes or vehicles.
The complete DF system comprises two units:
•
Antenna Unit (AU)
•
Display Control Unit (DCU)
