67.0
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
162.2
167.9
173.8
179.9
186.2
192.8
203.5
210.7
1.
Do not use 179.9 Hz or 118.8 Hz in areas served by 60 Hz power distribution systems (or 100.0 Hz or 151.4 Hz in areas supplied with 50 Hz power).
Hum modulation of co-channel stations may "false" Channel Guard decoders.
2.
Do not use adjacent Channel Guard tone frequencies in systems employing multiple Channel Guard tones. Avoid same-areas co-channel use of
adjacent Channel Guard tones whenever possible. As stated in TIA/EIA-603, there is a possibility of decoder falsing.
3.
To minimize receiver turn-on time delay, especially in system using Channel Guard repeaters or receiver voting, choose the highest usable Channel
Guard tone frequency. Do not use tones below 100 Hz when it is necessary to meet the receiver response time requirements as specified in
TIA/EIA-603.
Table 1 - Standard Tone Frequencies (Hz)
PRIMARY
CODE
EQUIVALENT
CODE
PRIMARY
CODE
EQUIVALENT
CODE
PRIMARY
CODE
EQUIVALENT
CODE
023
025
026
031
032
043
047
051
054
065
071
072
073
074
114
115
116
125
131
132
134
143
152
155
156
162
165
172
174
205
223
226
243
244
245
340 766
566
374 643
355
375 707
520 771
405 675
301
603 717 746
470 701
640
360 721
327 615
534 674
060 737
173
572 702
605 634 714
273
333
366 415
233 660
517 741
416 553
354
057
142 270
135 610
350 475 750
104 557
267 342
176 417
370 554
251
261
263
265
271
306
311
315
331
343
346
351
364
365
371
411
412
413
423
431
432
445
464
465
466
503
506
516
532
546
606
612
624
627
631
236 704 742
227 567
213 736
171 426
427 510 762
147 303 761
330 456 561
321 673
372 507
324 570
616 635 724
353 435
130 641
107
217 453 530
117 756
127 441 711
133 620
234 563 621 713
262 316 730
276 326
222 457 575
237 642 772
056 656
144 666
157 322
224 313 574
067 720
161 345
317 614 751
153 630
254 314 706
075 501
037 560
231 504 636 745
632
565
654
662
664
703
712
723
731
732
734
743
754
036
053
122
145
212
225
246
252
255
266
274
325
332
356
446
452
454
455
462
523
526
123 657
307 362
163 460 607
363 436 443 444
344 471 715
150 256
136 502
235 611 671
447 473 474 744
164 207
066
312 515 663
076 203
137
535
525
253
536
542 653
661
425
655
652
550 626
433 552
521
467 511 672
524 765
513 545 564
533 551
472 623 725
647 726
562 645
NOTE:
Primary codes in bold are unique Ericsson codes.
Table 2 - Digital Channel Guard Codes
AE/LZB 119 1874 R1A
12
Содержание KPC-300
Страница 1: ...ericssonz Maintenance Manual KPC 300 400 Portable Radio ...
Страница 8: ...Figure 5 Block Diagram AE LZB 119 1874 R1A 8 ...
Страница 29: ...EXPLODEDVIEW EXPLODED VIEWS AE LZB 119 1874 R1A 29 ...
Страница 30: ...COMPONENT LAYOUT TOP BOTTOM SUB BOARD AE LZB 119 1874 R1A 30 ...
Страница 31: ...COMPONENT LAYOUT MAIN BOARD TOP AE LZB 119 1874 R1A 31 ...
Страница 32: ...COMPONENT LAYOUT MAIN BOARD BOTTOM AE LZB 119 1874 R1A 32 ...
Страница 33: ...SCHEMATIC VHF AE LZB 119 1874 R1A 33 ...