Icom ID-51A Advanced Instructions page 252

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DUP/TONE items (Continued)
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Tone Burst
DUP/TONE... > Tone Burst (Tone Burst)
Turn the Tone Burst function ON or OFF in the FM mode when using tone
squelch.
• OFF : When you transmit a signal that superimposes the CTCSS tone, the
other station may hear a short burst of noise from their receiver, just
after you stop transmitting.
• ON : When you transmit a signal that superimposes the CTCSS tone, the func-
tion mutes the noise from being heard in the other station's receiver.
DTCS Code
DUP/TONE... > DTCS Code (DTCS Code)
Select a DTCS (both encoder/decoder) code for the DTCS squelch. A total of
104 codes (023–754) are selectable.
• Selectable DTCS codes
023 072 152 244
025 073 155 245
026 074 156 246
031 114 162 251
252
032 115 165
036 116 172 255
043 122 174 261
047 125 205 263
051 131 212 265
053 132 223 266
054 134 225 271
226 274
065 143
071 145 243 306
DTCS Polarity
DUP/TONE... > DTCS Polarity (DTCS Polarity)
Select the DTCS polarity to use for transmitting and receiving.
• Both N : Normal polarity is used for both TX and RX.
• TN-RR : Normal polarity is used for TX; Reverse polarity for RX.
• TR-RN : Reverse polarity is used for TX; Normal polarity for RX.
• Both R : Reverse polarity is used for both TX and RX.
DTCS code's polarity for transmitting or receiving can be independently set
with this item.
Digital Code
DUP/TONE... > Digital Code (Digital Code)
Select the desired digital code for digital code squelch.
A total of 100 codes (00–99) are selectable.
16-17
311 412 466 631
503 632
315 413
325 423 506 654
331 431 516 662
332 432 523 664
343 445 526 703
346 446 532 712
351 452 546 723
565 731
356 454
364 455 606 732
365 462 612 734
371 464 624 743
411 465 627 754
(Default: OFF)
(Default: 023)
(Default: Both N)
(Default: 00)