Packet #26273290

Database ID:	26273290
Mesh Packet ID:	`0x75d0b053` Used for correlation across gateways
Timestamp:	2025-12-07 23:21:04 UTC
From Node:	EA2FCG_TUESTA (FCGT)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TELEMETRY_APP Port: 67

Gateway:	rainbow- (🦄)
Channel:	LongFast
RSSI:	-98 dBm
SNR:	6.75 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0
Relay Node:	`10` FXZX Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

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:	37 bytes
Gateway:	!a031c0ec
Channel:	LongFast
Payload Type:	TELEMETRY_APP
Hop Count:	4 / 4

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

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a031c0ec` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (37 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2015139310` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`67` TELEMETRY_APP	enum
`decoded.payload_length`	`37` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-98.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.75` dB Signal quality at gateway	float
`rx_time`	`1765149643` 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`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`16` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765149664.8877852` Unix timestamp	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 (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!a031c0ec`
Signal Metrics:	RSSI: -98.0 dBm SNR: 6.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TELEMETRY_APP
Size:	37 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "time": 1765149649, "power_metrics": { "ch1_voltage": 4.208, "ch1_current": 10.8, "ch2_voltage": 4.208, "ch2_current": 0.4, "ch3_voltage": 3.76, "ch3_current": 0.4 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a031c0ec", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2015139310, "to": 4294967295, "id": 1976610899, "rx_time": 1765149643, "rx_snr": 6.75, "rx_rssi": -98, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 16, "tx_after": 0, "decoded": { "portnum": 67, "payload": "0dd10b36692a1e0df0a7864015cdcc2c411df0a7864025cdcccc3e2dd7a3704035cdcccc3e", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "time": 1765149649, "power_metrics": { "ch1_voltage": 4.208, "ch1_current": 10.8, "ch2_voltage": 4.208, "ch2_current": 0.4, "ch3_voltage": 3.76, "ch3_current": 0.4 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } } } }

Raw Packet Data (37 bytes)

0dd10b36692a1e0df0a7864015cdcc2c411df0a7864025cdcccc3e2dd7a3704035cdcccc3e

Hex Analysis:

Size:	37 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 #26273290 Success

Packet Information

Payload Data

Decoded Data: