Beacon Modes; Beacon Format Selection - Telephonics RDR-1600 Pilot's Manual

Beacon Mode

10.0 BEACON MODES

In the Beacon (BCN) mode, the RDR-1600 can interrogate, receive and dis-
play signals from fixed transponder beacons on all ranges. The beacon
itself is displayed as curved "slashes", with the position of the beacon
located approximately in the center of the closest slash.
The RDR-1600 will also display the bearing and radar distance to any
selected beacon; this information is displayed in the lower left corner of the
indicator display.
For greater flexibility, the beacon mode may be operated alone or in com-
bination with the weather or search modes.
42 RDR-1600 Pilot's Guide

10.1 BEACON FORMAT SELECTION

The RDR-1600 will always display all beacon signals on the screen as they
respond to the radar interrogation, regardless of the format selection.
To identify a particular beacon and place an identification number beside it,
you must first identify whether the beacon is the standard or DO-172
format. This is accomplished by observing the beacon responses.
If the beacon is of the standard format, there will always be only 2 "slash-
es" on the display spaced 7 nm apart or more. The RDR-1600 can identify
any one of nine standard beacons in this mode.
10.2 DO-172
A selected beacon utilizing the DO-172 format will have two framing "slash-
es" which are positioned approximately 2 nm apart. Within these two
"frames" will be a combination of up to four slashes. Varying the combina-
tions of the inner slashes makes it possible to identify any one of fifteen dif-
ferent DO-172 beacon codes. This feature is especially beneficial when
operating in areas of multiple beacon activity.
After the beacon type has been identified and the proper format selected,
the operator may now select the desired beacon number by pressing the
COURSE/CODE (CRS CODE) button the proper number of times.
TM106101(8/01) TM106101(8/01)
Figure 10.1-1. Standard Beacon
Figure 10.2-1. DO-172
RDR-1600 Pilot's Guide
Beacon Mode (Cont.)
43