Solution: Your antenna is likely tuned incorrectly. Use a 900 MHz/1800 MHz dual-band antenna. Also, run calibrate_rtl -g 30 to adjust gain.
Q or C).gsm_version → Show pack version
gsm_boost_pressure → Adjust turbo psi (1-40)
gsm_drift_multiplier → Score multiplier (default 1.0)
gsm_traffic_density → 0-1 (AI traffic amount)