T-49-13 Source Frequencies (Hz) 49 64 79 94 112 130 148 166 201 235 283 338 388 <-- High Signal Level 52 67 82 97 115 133 151 169 204 238 286 341 391 <-- 2nd Set of Tonals 55 70 85 100 118 136 154 172 207 241 289 344 394 <-- 3rd Set of Tonals 58 73 88 103 121 139 157 175 210 244 292 347 397 <-- 4th Set of Tonals 61 76 91 106 124 142 160 178 213 247 295 350 400 <-- 5th Set of Tonals The C-109-9S Source Frequencies (Hz) 109 127 145 163 198 232 280 335 385 <-- Shallow Source Frequencies Noise Frequencies Processed (Hz) 62 77 92 107 125 143 161 179 214 248 296 351 401