Packet #546339

Packet Information

Database ID:	546339
Mesh Packet ID:	`0xa1f1f2f7` Used for correlation across gateways
Timestamp:	2026-03-14 13:48:20 UTC
From Node:	Meshtastic 292c (292c)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TEXT_MESSAGE_APP Port: 1

Gateway:	AZ3LIT (AZLT)
Channel:	chat.cap.ru
RSSI:	-39 dBm
SNR:	6.75 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0
Relay Node:	`4c` Last byte of the last hop that relayed this packet

Payload Data

Protocol: TEXT_MESSAGE_APP

Size: 14 bytes

Decoded: Yes

Text Content:

Long fast test

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:	14 bytes
Gateway:	!9ea0e4b0
Channel:	chat.cap.ru
Payload Type:	TEXT_MESSAGE_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Broadcast

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

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

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!9ea0e4b0` Node ID format
`channel_id`	`chat.cap.ru`
`packet`	`MeshPacket` (14 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`3679988012` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`TEXT_MESSAGE_APP` TEXT_MESSAGE_APP	enum
`decoded.payload_length`	`14` 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`	`-39.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.75` dB Signal quality at gateway	float
`rx_time`	`1773496099` 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`	`105` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`76` 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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!9ea0e4b0`
Signal Metrics:	RSSI: -39.0 dBm SNR: 6.75 dB

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 3679988012, "to": 4294967295, "channel": 105, "decoded": { "portnum": "TEXT_MESSAGE_APP", "payload": "TG9uZyBmYXN0IHRlc3Q=", "bitfield": 1 }, "id": 2716988151, "rx_time": 1773496099, "rx_snr": 6.75, "rx_rssi": -39, "hop_start": 7, "relay_node": 76 }, "channel_id": "chat.cap.ru", "gateway_id": "!9ea0e4b0" }, "mesh_packet": { "from": 3679988012, "to": 4294967295, "channel": 105, "decoded": { "portnum": "TEXT_MESSAGE_APP", "payload": "TG9uZyBmYXN0IHRlc3Q=", "bitfield": 1, "parsed_payload": { "text": "Long fast test", "type": "text_message", "portnum": "TEXT_MESSAGE_APP" } }, "id": 2716988151, "rx_time": 1773496099, "rx_snr": 6.75, "rx_rssi": -39, "hop_start": 7, "relay_node": 76 } }

Raw Packet Data (14 bytes)

4c6f6e6720666173742074657374

Hex Analysis:

Size:	14 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.

All Receptions

All gateways that received this packet
Correlation: Using Mesh Packet ID

Reception Locations

Loading reception map...

Map shows gateway locations that received this packet. Hop counts are displayed if available.

Gateway	Time Offset	RSSI	SNR	Hops	Relay	Channel	Timestamp	Actions
AZ3LIT (AZLT) Primary	0.000s Reference	-39.0 dBm	6.75 dB	7	`4c`	chat.cap.ru	2026-03-14 13:48:20 UTC	Current
7 hops Gateways that received this packet after 7 hops
Meshtastic 292c (292c)	-15.606s Before	Unknown	Unknown	7	`2c` 292c	chat.cap.ru	2026-03-14 13:48:05 UTC	View

2

Total Receptions

2

Unique Gateways

Packet #546339 Success