1.1.10 REVIEW OF THE PREAMBLE

The preamble consists of the following parts, two of which are optional (OPT.):


NR	PREC	[HX]	STN-ORIG	CK	PLACE-OF-ORIG	[TIME-FILED]	MON	DAY
		OPT.				OPT.

In the example message given, the preamble is:


NR	PREC	[HX]	STN-ORIG	CK	PLACE-OF-ORIG	[TIME-FILED]	MON	DAY
1	R	HXE	W1AW	12	NEWINGTON CT	1830Z	JUL	1

If the handling instruction, HXE, and the filing time, 1830Z, were not used by the originating station (both are optional), the preamble would be as follows: Most routine messages in the amateur system are of this form.


NR	PREC	[HX]	STN-ORIG	CK	PLACE-OF-ORIG	[TIME-FILED]	MON	DAY
1	R		W1AW	12	NEWINGTON CT		JUL	1

A SERVICE message would have a preamble as follows:


NR	PREC	[HX]	STN-ORIG	CK	PLACE-OF-ORIG	[TIME-FILED]	MON	DAY
SVC 1	R		W1AW	12	NEWINGTON CT		JUL	1

An EXERCISE message would have a preamble as follows:


NR	PREC	[HX]	STN-ORIG	CK	PLACE-OF-ORIG	[TIME-FILED]	MON	DAY
1	TEST R		W1AW	12	NEWINGTON CT		JUL	1

Special rules apply for voicing a preamble. (See Chapter 2.) On CW simply send all the characters and spaces.

There is no prosign or proword (such as “BT” or “BREAK”) sent at the end of the preamble.