29:
149:
forces independently developed a later set of Z codes for military use and inter-language needs. The NATO Z codes are still in use, and are published in the unclassified document
82:
Ltd. (the Cable & Wireless
Service Z code) for commercial communications in the early days of wire and radio communications.
44:
411:
562:
579:
574:
557:
438:
542:
79:
386:
610:
476:
522:
431:
517:
589:
512:
461:
8:
620:
552:
424:
307:
2. IFF sets for 10 minutes in area denoted except for ships with the following
615:
567:
466:
471:
48:
52:
604:
56:
416:
486:
406:
584:
481:
447:
89:
17:
367:
150:
527:
162:
40:
28:
16:
For the virtual machine language introduced by
Infocom, see
146:
412:
391:
APCO International
Historical Collection (apcohistory.org)
507:
502:
129:
The old C&W Z codes are not widely used today.
161:There are other sets of codes internally used by
25:Morse code operating signal of the US Army / NATO
602:
88:Many of the old C&W codes are derived from
67:There are at least three sets of Z codes.
32:This is one of a set of articles on telegraphy.
230:7. Without automatic error correction system.
138:APCO also developed a system of Z codes.
432:
78:One set of codes was originally developed by
446:
278:Place a competent operator on this circuit
228:6. With automatic error correction system;
439:
425:
232:8. With time and frequency diversity modem
165:'s military and other operating agencies.
47:) is a set of operating signals used in
27:
337:1=Garbled / unreadable, up to 5=Perfect
603:
302:Switch off ... (except ...)
420:
407:Ralf D. Kloth DL4TA – List of Z-codes
323:Change to backup frequency ...
267:I am receiving your traffic garbled
245:Are you receiving my traffic clear?
62:
13:
256:I am receiving your traffic clear
14:
632:
400:
379:
201:I am closing down (until ...)
1:
373:
7:
361:
289:I cannot transmit pictures
168:
10:
637:
15:
541:
495:
477:Modulated continuous wave
454:
387:"Standard Z Signals"
178:Some example Z codes
523:Morse code abbreviations
448:International Morse code
334:Measure of printability
518:Prosigns for Morse code
590:Chinese telegraph code
33:
543:Other writing systems
59:radio communication.
31:
513:Morse code mnemonics
462:Electrical telegraph
455:Transmission methods
226:5. Single sideband;
80:Cable & Wireless
553:American Morse code
181:
175:
34:
611:Operating signals
598:
597:
357:
356:
157:
156:
63:Distinct versions
628:
441:
434:
427:
418:
417:
395:
394:
383:
310:
299:
204:
198:
182:
180:
174:
72:
71:
636:
635:
631:
630:
629:
627:
626:
625:
601:
600:
599:
594:
563:Cyrillic script
544:
537:
496:Notable signals
491:
472:Continuous wave
450:
445:
403:
398:
385:
384:
380:
376:
364:
308:
306:
297:
231:
229:
227:
225:
223:
221:
219:
202:
196:
176:
171:
114:
104:
65:
26:
21:
12:
11:
5:
634:
624:
623:
618:
613:
596:
595:
593:
592:
587:
582:
577:
572:
571:
570:
560:
558:Greek alphabet
555:
549:
547:
539:
538:
536:
535:
530:
525:
520:
515:
510:
505:
499:
497:
493:
492:
490:
489:
484:
479:
474:
469:
464:
458:
456:
452:
451:
444:
443:
436:
429:
421:
415:
414:
409:
402:
401:External links
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377:
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371:
370:
363:
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359:
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351:
348:
344:
343:
340:
339:
338:
332:
328:
327:
324:
321:
317:
316:
313:
312:
311:
309:call signs ...
300:
298:ZSF ... (...)
294:
293:
290:
287:
283:
282:
279:
276:
272:
271:
268:
265:
261:
260:
257:
254:
250:
249:
246:
243:
239:
238:
235:
234:
233:
224:4. Multiplex;
213:
209:
208:
205:
199:
197:ZAL (...) ...
193:
192:
189:
186:
170:
167:
159:
158:
155:
154:
144:
140:
139:
136:
132:
131:
127:
126:
124:
86:
85:
76:
64:
61:
24:
9:
6:
4:
3:
2:
633:
622:
619:
617:
614:
612:
609:
608:
606:
591:
588:
586:
583:
581:
580:Arabic script
578:
576:
575:Hebrew script
573:
569:
566:
565:
564:
561:
559:
556:
554:
551:
550:
548:
546:
545:in Morse code
540:
534:
531:
529:
526:
524:
521:
519:
516:
514:
511:
509:
506:
504:
501:
500:
498:
494:
488:
485:
483:
480:
478:
475:
473:
470:
468:
467:On–off keying
465:
463:
460:
459:
457:
453:
449:
442:
437:
435:
430:
428:
423:
422:
419:
413:
410:
408:
405:
404:
392:
388:
382:
378:
369:
366:
365:
352:
349:
346:
345:
341:
336:
335:
333:
331:ZBZ ...
330:
329:
325:
322:
320:ZBW ...
319:
318:
314:
304:
303:
301:
296:
295:
291:
288:
285:
284:
280:
277:
274:
273:
269:
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258:
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236:
217:
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206:
200:
195:
194:
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187:
184:
183:
179:
173:
172:
166:
164:
152:
148:
145:
142:
141:
137:
134:
133:
130:
125:
122:
118:
112:
108:
102:
98:
94:
93:
92:
91:
84:
83:
81:
77:
74:
73:
70:
69:
68:
60:
58:
54:
50:
46:
42:
38:
30:
23:
19:
532:
390:
381:
305:1. IFF;
177:
160:
128:
123:aster, etc.)
120:
116:
110:
106:
100:
96:
87:
66:
36:
35:
22:
487:Signal lamp
286:ZLD 2
275:ZBM 2
264:ZBK 2
253:ZBK 1
222:3. Diplex;
220:2. Duplex;
218:1. Simplex;
37:Z Code
621:Morse code
605:Categories
585:Wabun code
482:Heliograph
374:References
350:Stand by.
203:due to ...
616:Encodings
215:Work ...
99:lter wave
90:mnemonics
18:Z-machine
362:See also
342:C&W
326:C&W
315:C&W
292:C&W
281:C&W
237:C&W
212:ZAP ...
207:C&W
188:Meaning
169:Examples
568:Russian
368:ACP-131
191:Source
151:ACP-131
95:(ZAL =
533:Z code
528:Q code
163:Russia
115:ZSF =
113:lease,
105:ZAP =
103:ength,
45:X Code
41:Q Code
39:(like
353:NATO
270:NATO
259:NATO
248:NATO
185:Code
347:ZUJ
242:ZBK
147:NATO
119:end
57:RTTY
55:and
43:and
508:CQD
503:SOS
143:3.
135:2.
109:ck
75:1.
53:TTY
607::
389:.
153:.
51:,
49:CW
440:e
433:t
426:v
393:.
121:f
117:s
111:p
107:a
101:l
97:a
20:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
