Icom ID-51A Advanced Manual page 272

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■ DUP/TONE items (Continued)
Tone Burst
DUP/TONE... > 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
Select a DTCS (both encoder/decoder) code for the DTCS squelch. A total of
104 codes (023~754) are selectable.
• Selectable DTCS codes
244
023 072 152
025 073 155 245
026 074 156 246
031 114 162 251
032 115 165 252
036 116 172 255
043 122 174 261
263
047 125 205
051 131 212 265
053 132 223 266
054 134 225 271
065 143 226 274
071 145 243 306
DTCS Polarity
DUP/TONE... > 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
Select the desired digital code for digital code squelch.
A total of 100 codes (00~99) are selectable.
16-17
311 412 466 631
315 413 503 632
325 423 506 654
331 431 516 662
523 664
332 432
343 445 526 703
346 446 532 712
351 452 546 723
356 454 565 731
364 455 606 732
365 462 612 734
624 743
371 464
411 465 627 754
(Default: OFF)
(Default: 023)
(Default: Both N)
(Default: 00)