Packet #425334

Database ID:	425334
Mesh Packet ID:	`0x1f2595b8` Used for correlation across gateways
Timestamp:	2026-04-18 02:48:43 UTC
From Node:	BTDK TDeck (BTDK)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	NU8H-1 (U8H1)
Channel:	LongFast
RSSI:	-116 dBm
SNR:	-7.0 dBm
Hop Info:	1/7 hops Start: 7, Limit: 6
Relay Node:	None

Long Name:	BTDK TDeck
Short Name:	BTDK
Node ID:	!f1b8a988
MAC Address:	IG7xuKmI
Hardware:	T_DECK

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:	75 bytes
Gateway:	!433e7cf0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 7

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`	`!433e7cf0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (75 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`4055411080` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_APP	enum
`decoded.payload_length`	`75` bytes	size
`hop_limit`	`6` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-116.0` dBm Signal strength at gateway	int32
`rx_snr`	`-7.00` dB Signal quality at gateway	float
`rx_time`	`1776480523` 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`	Not set	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:	`!433e7cf0`
Signal Metrics:	RSSI: -116.0 dBm SNR: -7.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	75 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!f1b8a988", "long_name": "BTDK TDeck", "short_name": "BTDK", "macaddr": "IG7xuKmI", "hw_model": "T_DECK" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 4055411080, "to": 4294967295, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhZjFiOGE5ODgSCkJUREsgVERlY2saBEJUREsiBiBu8bipiCgyQiCQX3vD3nUi2ae/ObiTeolq3mIsHy9ytmi3uw0jd4gpJEgA", "bitfield": 1 }, "id": 522556856, "rx_time": 1776480523, "rx_snr": -7.0, "hop_limit": 6, "rx_rssi": -116, "hop_start": 7 }, "channel_id": "LongFast", "gateway_id": "!433e7cf0" }, "mesh_packet": { "from": 4055411080, "to": 4294967295, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhZjFiOGE5ODgSCkJUREsgVERlY2saBEJUREsiBiBu8bipiCgyQiCQX3vD3nUi2ae/ObiTeolq3mIsHy9ytmi3uw0jd4gpJEgA", "bitfield": 1, "parsed_payload": { "id": "!f1b8a988", "long_name": "BTDK TDeck", "short_name": "BTDK", "macaddr": "IG7xuKmI", "hw_model": "T_DECK", "public_key": "kF97w951Itmnvzm4k3qJat5iLB8vcrZot7sNI3eIKSQ=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 522556856, "rx_time": 1776480523, "rx_snr": -7.0, "hop_limit": 6, "rx_rssi": -116, "hop_start": 7 } }

Raw Packet Data (75 bytes)

0a09216631623861393838120a4254444b20544465636b1a044254444b2206206ef1b8a98828324220905f7bc3de7522d9a7bf39b8937a896ade622c1f2f72b668b7bb0d23778829244800

Hex Analysis:

Size:	75 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 #425334 Success

Packet Information

Payload Data

Decoded Data: