Packet #1746271

Database ID:	1746271
Mesh Packet ID:	`0x79ebe8d4` Used for correlation across gateways
Timestamp:	2026-04-04 21:27:16 UTC
From Node:	kaleko_aleko (22aa)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TELEMETRY_APP Port: 67

Gateway:	K3000 (k300)
Channel:	Sofia
RSSI:	-48 dBm
SNR:	11.25 dBm
Hop Info:	2/2 hops Start: 2, Limit: 0
Relay Node:	`2b` KMSH Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Battery:	101%
Voltage:	4.34 V
Channel Usage:	1.6%
Air Util TX:	0.2%

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	27 bytes
Gateway:	!0407c954
Channel:	Sofia
Payload Type:	TELEMETRY_APP
Hop Count:	2 / 2

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Sofia
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!0407c954` Node ID format
`channel_id`	`Sofia`
`packet`	`MeshPacket` (27 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2741317622` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`TELEMETRY_APP` TELEMETRY_APP	enum
`decoded.payload_length`	`27` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-48.0` dBm Signal strength at gateway	int32
`rx_snr`	`11.25` dB Signal quality at gateway	float
`rx_time`	`1775338035` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	`80` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`43` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Sofia
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!0407c954`
Signal Metrics:	RSSI: -48.0 dBm SNR: 11.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TELEMETRY_APP
Size:	27 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "time": 1775338033, "device_metrics": { "battery_level": 101, "voltage": 4.34, "channel_utilization": 1.5583334, "air_util_tx": 0.20202778, "uptime_seconds": 7267 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2741317622, "to": 4294967295, "channel": 80, "decoded": { "portnum": "TELEMETRY_APP", "payload": "DTGC0WkSFAhlFUjhikAdeHfHPyVf4E4+KOM4", "bitfield": 0 }, "id": 2045503700, "rx_time": 1775338035, "rx_snr": 11.25, "rx_rssi": -48, "hop_start": 2, "relay_node": 43, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "Sofia", "gateway_id": "!0407c954" }, "mesh_packet": { "from": 2741317622, "to": 4294967295, "channel": 80, "decoded": { "portnum": "TELEMETRY_APP", "payload": "DTGC0WkSFAhlFUjhikAdeHfHPyVf4E4+KOM4", "bitfield": 0, "parsed_payload": { "time": 1775338033, "device_metrics": { "battery_level": 101, "voltage": 4.34, "channel_utilization": 1.5583334, "air_util_tx": 0.20202778, "uptime_seconds": 7267 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } }, "id": 2045503700, "rx_time": 1775338035, "rx_snr": 11.25, "rx_rssi": -48, "hop_start": 2, "relay_node": 43, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (27 bytes)

0d3182d169121408651548e18a401d7877c73f255fe04e3e28e338

Hex Analysis:

Size:	27 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

Packet #1746271 Success

Packet Information

Payload Data

Decoded Data:

Device Metrics: