communication instructions radio telegraph procedure

UNCLASSIFIED ACP124 (D)
TABLE OF CONTENTS
CHAPTER 2
MESSAGE PREPARATION
I USE OF PROSIGNS AND OPERATING SIGNALS IN PROCEDURE COMPONENT
Section Paragraph Subject Page Number
201 Use of Separative Sign (Prosign II) ……………………….. 2-1
202 The Call (Prosigns XMT and DE) ………………………… 2-1
203 Serial Number …………………………………………….. 2-1
204 Transmission Identity (Prosign NR) 2-1
205 Transmission Instructions (Operating Signal ZWL) ……… 2-2
206 Prosign G (Repeat Back) …………………………………. 2-2
207 Prosign F (Do Not Answer) ………………………………. 2-3
208 Prosign T (Transmit to) …………………………………… 2-4
209 Operating Signal ZWL ……………………………………. 2-5
210 Transmission Instructions in Codress Messages ………….. 2-6
II USE OF PROSIGNS AND OPERATING SIGNALS IN PREAMBLE
211 Responsibility for Precedence ………………………….. 2-8
212 Significance of Precedence ……………………………… 2-8
213 Precedence Designations and Communications Handling .. 2-8
214 Single Precedence ………………………………………. 2-8
215 Dual Precedence ………………………………………… 2-9
216 Message Instructions – Use of Operating Signals ……… 2-10
III EXPRESSING THE ADDRESS
IV PREFIX
217 Use of Prosigns FM, TO, INFO and XMT ……………….. 2-11
218 Call Serving as the Address ………………………………. 2-11
219 GR (Group Count), GRNC (Groups Not Counted), and
Accounting Symbols …………………………………… 2-13
V USE OF PROSIGNS AND OPERATING SIGNALS IN MESSAGE ENDING
220 Time Group ……………………………………………….. 2-14
221 Final Instructions …………………………………………. 2-14
222 Transmission Ending ……………………………………… 2-14
223 Readdressing Messages (Double Heading) ………………. 2-19
UNCLASSIFIED VI