sdr-visual-suite/internal/classifier/frequency_context.json

{
  "ft8_mhz": [1.84, 3.573, 5.357, 7.074, 10.136, 14.074, 18.1, 21.074, 24.915, 28.074],
  "wspr_mhz": [1.8366, 3.5926, 7.0386, 10.1387, 14.0956, 18.1046, 21.0946, 24.9246, 28.1246],
  "ranges": [
    {"name": "hf", "start_mhz": 1.8, "end_mhz": 30.0},
    {"name": "vhf_2m", "start_mhz": 144.0, "end_mhz": 148.0},
    {"name": "broadcast_fm", "start_mhz": 87.5, "end_mhz": 108.0},
    {"name": "airband", "start_mhz": 118.0, "end_mhz": 137.0},
    {"name": "uhf_70cm", "start_mhz": 430.0, "end_mhz": 440.0},
    {"name": "pmr446", "start_mhz": 446.0, "end_mhz": 446.2}
  ]
}