Packet #1620960

Database ID:	1620960
Mesh Packet ID:	`0xe6645ab8` Used for correlation across gateways
Timestamp:	2026-06-06 20:06:26 UTC
From Node:	K4KPW QTH MediumFast (MDVL)
To Node:	Rocky Face (Rky)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Six Feet Over - MF (SFO)
Channel:	MediumFast
RSSI:	-91 dBm
SNR:	6.5 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0
Relay Node:	`98` e098 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	K4KPW QTH MediumFast
Short Name:	MDVL
Node ID:	!6a5129ed
MAC Address:	uCfrMjg+
Hardware:	PORTDUINO

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:	87 bytes
Gateway:	!db2b13f8
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 4

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db2b13f8` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1783704045` Source node ID	uint32
`to`	`3333695884` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` 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`	`-91.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.50` dB Signal quality at gateway	float
`rx_time`	`1780776384` 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`	`152` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1780776386.792932` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2b13f8`
Signal Metrics:	RSSI: -91.0 dBm SNR: 6.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	87 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!6a5129ed", "long_name": "K4KPW QTH MediumFast", "short_name": "MDVL", "macaddr": "uCfrMjg+", "hw_model": "PORTDUINO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2b13f8", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1783704045, "to": 3333695884, "id": 3865336504, "rx_time": 1780776384, "rx_snr": 6.5, "rx_rssi": -91, "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": 152, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921366135313239656412144b344b505720515448204d656469756d466173741a044d44564c2206b827eb32383e2825380c4220e2a15202f3937225680e251e10b9a0f22eb4eb4a8f6bc56f5e3aa52fe99959654800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!6a5129ed", "long_name": "K4KPW QTH MediumFast", "short_name": "MDVL", "macaddr": "uCfrMjg+", "hw_model": "PORTDUINO", "role": "CLIENT_BASE", "public_key": "4qFSAvOTciVoDiUeELmg8i6060qPa8VvXjqlL+mZWWU=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (87 bytes)

0a0921366135313239656412144b344b505720515448204d656469756d466173741a044d44564c2206b827eb32383e2825380c4220e2a15202f3937225680e251e10b9a0f22eb4eb4a8f6bc56f5e3aa52fe99959654800

Hex Analysis:

Size:	87 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 #1620960 Success

Packet Information

Payload Data

Decoded Data: