Icom IC-R2500 Instruction Manual page 41

Communication receiver
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i Push any switch for the main band or common switch to
exit tone squelch selection mode.
Appears when the pocket beep
with tone squelch is activated.
o When a signal with the matched tone is received, the re-
ceiver emits beep tones and blinks "S".
• Beep tones sound for 30 sec. and "S" blinks. To stop the
beeps and blinking manually, push any switch.
!0 Push and hold [MONI•T/T-SCAN] for 1 sec. to enter tone
squelch selection mode, then rotate [DIAL] to cancel the
tone squelch or DTCS squelch function.
• "oFF" is selected for turning the function OFF.
Appears when the pocket beep
with DTCS squelch is activated.
POCKET BEEP AND TONE SQUELCH
D Available tone frequency list
67.0
79.7
097.4
118.8
146.2
69.3
82.5
100.0
123.0
151.4
71.0
85.4
103.5
127.3
156.7
71.9
88.5
107.2
131.8
159.8
74.4
91.5
110.9
136.5
162.2
77.0
94.8
114.8
141.3
165.5
NOTE: The receiver has 51 tone frequencies and conse-
quently their spacing is narrow compared to units having
38 tones. Therefore, some tone frequencies may receive
interference from adjacent tone frequencies.
D Available DTCS code list
023
054
125
165
245
025
065
131
172
246
026
071
132
174
251
031
072
134
205
252
032
073
143
212
255
036
074
145
223
261
043
114
152
225
263
047
115
155
226
265
051
116
156
243
266
053
122
162
244
271
D Calling a waiting station using pocket beep
A subaudible tone matched with the station's CTCSS tone fre-
quency or 3-digit DTCS code with polarity is necessary. Use
the tone squelch on the next page ((p. 33)).
167.9
186.2
206.5
241.8
171.3
189.9
210.7
250.3
173.8
192.8
218.1
254.1
177.3
196.6
225.7
179.9
199.5
229.1
183.5
203.5
233.6
274
445
627
356
506
732
306
364
446
516
631
734
311
365
452
523
632
743
315
371
454
526
654
754
325
411
455
532
662
331
412
462
546
664
332
413
464
565
703
343
423
465
606
712
346
431
466
612
723
351
432
503
624
731
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
36

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