Packet #217290

Database ID:	217290
Mesh Packet ID:	`0x9abe5c50` Used for correlation across gateways
Timestamp:	2026-04-15 13:50:38 UTC
From Node:	JoaoC-57db-8 (JC08)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TELEMETRY_APP Port: 67

Gateway:	JES2-CB-8 (JES2)
Channel:	LongFast
RSSI:	-8 dBm
SNR:	8.0 dBm
Hop Info:	1/6 hops Start: 6, Limit: 5
Relay Node:	`35` SNSN Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Battery:	101%
Voltage:	4.17 V
Channel Usage:	6.5%
Air Util TX:	0.0%

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:	29 bytes
Gateway:	!49b7757c
Channel:	LongFast
Payload Type:	TELEMETRY_APP
Hop Count:	1 / 6

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!49b7757c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (29 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`1735350235` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`TELEMETRY_APP` TELEMETRY_APP	enum
`decoded.payload_length`	`29` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`6` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-8.0` dBm Signal strength at gateway	int32
`rx_snr`	`8.00` dB Signal quality at gateway	float
`rx_time`	`1776261037` 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`	`8` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`53` 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)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!49b7757c`
Signal Metrics:	RSSI: -8.0 dBm SNR: 8.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TELEMETRY_APP
Size:	29 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "time": 3474066273, "device_metrics": { "battery_level": 101, "voltage": 4.168, "channel_utilization": 6.486667, "air_util_tx": 0.044, "uptime_seconds": 2345349 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 1735350235, "to": 4294967295, "channel": 8, "decoded": { "portnum": "TELEMETRY_APP", "payload": "DWELEs8SFghlFUJghUAdx5LPQCVYOTQ9KIWTjwE=", "bitfield": 1 }, "id": 2596166736, "rx_time": 1776261037, "rx_snr": 8.0, "hop_limit": 5, "rx_rssi": -8, "hop_start": 6, "relay_node": 53, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "LongFast", "gateway_id": "!49b7757c" }, "mesh_packet": { "from": 1735350235, "to": 4294967295, "channel": 8, "decoded": { "portnum": "TELEMETRY_APP", "payload": "DWELEs8SFghlFUJghUAdx5LPQCVYOTQ9KIWTjwE=", "bitfield": 1, "parsed_payload": { "time": 3474066273, "device_metrics": { "battery_level": 101, "voltage": 4.168, "channel_utilization": 6.486667, "air_util_tx": 0.044, "uptime_seconds": 2345349 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } }, "id": 2596166736, "rx_time": 1776261037, "rx_snr": 8.0, "hop_limit": 5, "rx_rssi": -8, "hop_start": 6, "relay_node": 53, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (29 bytes)

0d610b12cf1216086515426085401dc792cf40255839343d2885938f01

Hex Analysis:

Size:	29 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 #217290 Success

Packet Information

Payload Data

Decoded Data:

Device Metrics: