Attribute: Signal group


Acronym: SIGGRP

Code: 141

Attribute type: A

Definition:

The number of signals, the combination of signals or the morse character(s) within one period of full sequence.

ENC Condition:

# Must be encoded for all LIGHTS objects, that are not fixed lights.

References:

INT 1: IP 10.2-9; IR 20, 22;

M-4: 453; 453.1-4; 471.2;

Indication:

The signal group of a light is encoded using brackets to separate the individual groups. A group of signals may be a single number, a chain of numbers separated by "+", a sequence of up to 4 letters or a letter and a number.

A fixed light has no signal group.

Where no specific signal group is given for one of the light characteristics, this should be shown by an empty pair of brackets.

Format:

(c)(c)...

Examples:



Light characteristic SIGGRP Indication
VQ(6)+LFl 

Fl+LFl(2+3)

Fl(2)+Lfl(3)

Ffl

Mo(AA)

AlFl(2W+1R)

AlLFlWR

FOcW

AlOc(4)WR

(6)(1)

(1)(2+3)

(2)(3)

()(1)

(AA)

(2+1)

(2)

()(1)

(4)