Packet #704854

Database ID:	704854
Mesh Packet ID:	`0x4740eee5` Used for correlation across gateways
Timestamp:	2026-04-02 13:22:45 UTC
From Node:	Meshtastic 6de0 (6de0)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Meshtastic 6de0 (6de0)
Channel:	chat.cap.ru
RSSI:	Unknown
SNR:	Unknown
Hop Info:	7/7 hops Start: 7, Limit: 0
Relay Node:	`e0` 6de0 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Latitude:	56.072602°
Longitude:	47.316992°
Altitude:	172 m
Precision:	13 bits

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:	28 bytes
Gateway:	!9e786de0
Channel:	chat.cap.ru
Payload Type:	POSITION_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: chat.cap.ru
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!9e786de0` Node ID format
`channel_id`	`chat.cap.ru`
`packet`	`MeshPacket` (28 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2658692576` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`POSITION_APP` POSITION_APP	enum
`decoded.payload_length`	`28` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1775127533` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`BACKGROUND` Packet priority level	enum
`delayed`	Not set	enum
`channel`	`105` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`224` 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: chat.cap.ru
✓ Gateway node ID tracked
✓ Reduced position precision: ~2900.0m accuracy

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)

MQTT-Specific Fields

Gateway ID:	`!9e786de0`
Position Precision:	13 bits (~2900.0m accuracy)
Position precision meters:	`2900.0`

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	28 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 56.0726016, "longitude": 47.316992, "altitude": 172, "sats_in_view": null, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2658692576, "to": 4294967295, "channel": 105, "decoded": { "portnum": "POSITION_APP", "payload": "DQAAbCEVAAA0HBisASXtS85pKAN4AIABALgBDQ==", "bitfield": 0 }, "id": 1195437797, "rx_time": 1775127533, "priority": "BACKGROUND", "hop_start": 7, "relay_node": 224 }, "channel_id": "chat.cap.ru", "gateway_id": "!9e786de0" }, "mesh_packet": { "from": 2658692576, "to": 4294967295, "channel": 105, "decoded": { "portnum": "POSITION_APP", "payload": "DQAAbCEVAAA0HBisASXtS85pKAN4AIABALgBDQ==", "bitfield": 0, "parsed_payload": { "latitude_i": 560726016, "longitude_i": 473169920, "altitude": 172, "time": 1775127533, "location_source": "LOC_EXTERNAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } }, "id": 1195437797, "rx_time": 1775127533, "priority": "BACKGROUND", "hop_start": 7, "relay_node": 224 } }

Raw Packet Data (28 bytes)

0d00006c21150000341c18ac0125ed4bce6928037800800100b8010d

Hex Analysis:

Size:	28 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 #704854 Success

Packet Information

Payload Data

Decoded Data: