PiScan/data/defaults/state.json

{
    "state": {
        "demod": {
            "gain": "-10",
            "squelch": "0"
        },
        "scanner": {
            "state": "2",
            "manual_freq": "100000000",
            "manual_mode": "NFM",
            "hold_key": "",
            "hold_index": ""
        }
    }
}