Lab056: compare 20 and 500 ksymbol/s in controlled RF session

data/processed/lab056/rx_preflight_plan.json

@@ -0,0 +1,26 @@
+{
+  "point": {
+    "frequency_hz": 1400000000,
+    "physical_path": "MASTER TX -> TX antenna -> free-space LOS -> RX antenna -> SLAVE RX; user-specified approximate distance 3-5 m; fixed equipment and cables",
+    "path_confirmed": true,
+    "tx_antenna": "Existing 1400 MHz antenna, as described by user; model/marking not supplied",
+    "rx_antenna": "Existing 1400 MHz antenna, as described by user; model/marking not supplied",
+    "distance_m": null,
+    "orientation": "Both stationary; same antenna orientation and polarization, per user",
+    "visibility": "LOS"
+  },
+  "distance_description": "Approximately 3-5 m per user; exact measured value not supplied",
+  "frequency_role": "CURRENT_LAB056_TEST_ONLY_NOT_ROVER_OPERATING_BAND",
+  "field_band_context": "Approximately 180 MHz considered separately; 50/144 MHz outside Lab056",
+  "scope": "COMMON_CLOCK_AND_RX_ONLY_PREFLIGHT_THEN_STOP",
+  "tx_authorized": false,
+  "rf_tx_count": 0,
+  "rx_preflight_samples": 800000,
+  "sample_rate_hz": 8000000,
+  "rx_lna_db": 24,
+  "rx_vga_db": 24,
+  "rf_amplifier": false,
+  "bias_tee": false,
+  "external_pa_lna": false,
+  "recorded_at_utc": "2026-09-10T09:16:28.289788+00:00"
+}