Section 3. Operation
3-2
Table 3. -2. User Number Cross Reference Table: 50 Tone Version
User Tone User Tone User Tone User Tone
1 67.0 18 118.8 35 183.5 52 DCS
2 69.4 19 123.0 36 186.2 53 DCS
3 71.9 20 127.3 37 189.9 54 DCS
4 74.4 21 131.8 38 192.8 55 DCS
5 77.0 22 136.5 39 196.6 56 DCS
6 79.7 23 141.3 40 199.5 57 DCS
7 82.5 24 146.2 41 203.5 58 DCS
8 85.4 25 151.4 42 206.5 59 DCS
9 88.5 26 156.7 43 210.7 60 DCS
10 91.5 27 159.8 44 218.1 61 DCS
11 94.8 28 162.2 45 225.7 62 DCS
12 97.4 29 165.5 46 229.1 63 DCS
13 100.0 30 167.9 47 233.6 64 DCS
14 103.5 31 171.3 48 241.8 65 DCS
15 107.2 32 173.8 49 250.3 66 DCS
16 110.9 33 177.3 50 254.1 67 DCS
17 114.8 34 179.9 51 DCS 68 DCS
HOW TONES/CODES ARE ENABLED
User Validation
The Model 38 is always listening to the receive audio for the presence of an enabled user. All
38 or 50 CTCSS tones and 18 or 22 of the digital codes can be marked as enabled or disabled
(consult the programming section).
Disabled Tones
When a disabled CTCSS tone is detected, the time accumulator will keep track of the airtime
used by that tone. This feature lets the system manager gain information about the CTCSS
tones that are in use on the channel, perhaps by another repeater in the area. The Model 38
will accumulate airtime for all CTCSS tones, but not disabled DCS codes.
Enabled Users, CTCSS / DCS Encode
When an enabled tone or digital code is detected, the transmitter will be keyed. Depending
on programming, the system will: (1) encode nothing, (2) regenerate the received tone or
code, or (3) encode a different tone or digital code (cross-tone encoding).