User's Manual

Function Description SP-7402
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- RSSI (Received Signal Strength Indication)
This function is to indicate the received signal strength.
Display Ex.
Signal Strength
- Receiving Option
z Squelch Level Control
Squelch level is adjustable 1 to 9 step by PC Program or User Set
Mode.
z Sub-Audio Tone
① CTCSS
The radio has a CTCSS tone squelch function which consists of
38 standard tones and 12 non-standard tones.
No. Freq. No. Freq. No. Freq. No. Freq.
1 67.0 14 107.2 27 167.9 40 159.8
2 71.9 15 110.9 28 173.8 41 165.5
3 74.4 16 114.8 29 179.9 42 171.3
4 77.0 17 118.8 30 186.2 43 177.3
5 79.7 18 123.0 31 192.8 44 183.5
6 82.5 19 127.3 32 203.5 45 189.9
7 85.4 20 131.8 33 210.7 46 196.6
8 88.5 21 136.5 34 218.1 47 199.5
9 91.5 22 141.3 35 225.7 48 206.5
10 94.8 23 146.2 36 233.6 49 229.1
11 97.3 24 151.4 37 241.8 50 254.1
12 100.0 25 156.7 38 250.3
13 103.5 26 162.2 39 69.4