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SM06 Rev. 4.10 Tac/Com Control Head Manual
3.5.4.2 CTCSS or Subaudible Tone Table
The following table shows the relationship of the supported tone codes. All of these are
available in the control head, and when editing, the SELECT slew switch (+/-) will bring
up only valid choices for each type of code. Pressing HELP while editing these
positions of the channel data will bring up the tone table for reference. The Frequency
shown will have the decimal fraction truncated when displayed on the control head.
Tone Frequency 1-32 (1-38) WCODE MCODE
67.0 Hz 1 01 XZ
71.9 Hz 2 02 XA
74.4 Hz 3 03 WA
77.0 Hz 4 04 XB
79.7 Hz 5 05 SP
82.5 Hz 6 06 YZ
85.4 Hz 7 07 YA
88.5 Hz 8 08 YB
91.5 Hz 9 11 ZZ
94.8 Hz 10 12 ZA
97.4 Hz 11 13 ZB
100.0 Hz 12 14 1Z
103.5 Hz 13 15 1A
107.2 Hz 14 16 1B
110.9 Hz 15 17 2Z
114.8 Hz 16 18 2A
118.8 Hz 17 21 2B
123.0 Hz 18 22 3Z
127.3 Hz 19 23 3A
131.8 Hz 20 24 3B
136.5 Hz 21 25 4Z
141.3 Hz 22 26 4A
146.2 Hz 23 27 4B
151.4 Hz 24 28 5Z
156.7 Hz 25 31 5A
162.2 Hz 26 32 5B
167.9 Hz 27 33 6Z
173.8 Hz 28 34 6A
179.9 Hz 29 35 6B
186.2 Hz 30 36 7Z
192.8 Hz 31 37 7A
203.5 Hz 32 38 M1
210.7 Hz (NAT) 33 (NAT ONLY) 41 (NAT ONLY) M2 (NAT ONLY)
218.1 Hz (NAT) 34 (NAT ONLY) 42 (NAT ONLY) M3 (NAT ONLY)
225.7 Hz (NAT) 35 (NAT ONLY) 43 (NAT ONLY) M4 (NAT ONLY)
233.6 Hz (NAT) 36 (NAT ONLY) 44 (NAT ONLY) M5 (NAT ONLY)
241.8 Hz (NAT) 37 (NAT ONLY) 45 (NAT ONLY) M6 (NAT ONLY)
250.3 Hz (NAT) 38 (NAT ONLY) 46 (NAT ONLY) M7 (NAT ONLY)
The multiple codes shown are available on current generation Tac/Com II controls only.
Previous generation Tac/Com I & II controls had only a single code, which was the
WCODE, for compatibility with existing aircraft transceivers.
Jan 4, 2006 Page 3-17
ENG-FORM: 806-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.