Packet #1658455

Database ID:	1658455
Mesh Packet ID:	`0x9d2caa8b` Used for correlation across gateways
Timestamp:	2026-07-24 07:38:42 UTC
From Node:	SE-GAL-UTRERA-SAE-04 ☀️🔋 (SAE4)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	SVQ1_62ec (SVQ1)
Channel:	SFNarrow
RSSI:	-109 dBm
SNR:	-6.25 dBm
Hop Info:	3/4 hops Start: 4, Limit: 1
Relay Node:	`ce` Last byte of the last hop that relayed this packet

Long Name:	SE-GAL-UTRERA-SAE-04 ☀️🔋
Short Name:	SAE4
Node ID:	!6d16c98b
MAC Address:	711tFsmL
Hardware:	NRF52_PROMICRO_DIY

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:	98 bytes
Gateway:	!db2962ec
Channel:	SFNarrow
Payload Type:	NODEINFO_APP
Hop Count:	3 / 4

Privacy Summary

Exposure Level:
Broadcast

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

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

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!db2962ec` Node ID format
`channel_id`	`SFNarrow`
`packet`	`MeshPacket` (98 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`1830209931` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_APP	enum
`decoded.payload_length`	`98` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-109.0` dBm Signal strength at gateway	int32
`rx_snr`	`-6.25` dB Signal quality at gateway	float
`rx_time`	`1784878711` 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`	`32` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`206` 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: SFNarrow
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2962ec`
Signal Metrics:	RSSI: -109.0 dBm SNR: -6.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	98 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!6d16c98b", "long_name": "SE-GAL-UTRERA-SAE-04 ☀️🔋", "short_name": "SAE4", "macaddr": "711tFsmL", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 1830209931, "to": 4294967295, "channel": 32, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhNmQxNmM5OGISH1NFLUdBTC1VVFJFUkEtU0FFLTA0IOKYgO+4j/CflIsaBFNBRTQiBu9dbRbJiyg/OAxCIFDrlvHrrTF3pb4Ojq0c1J1AU7HFGtxyV992X3Eb2JkmSAA=", "bitfield": 1 }, "id": 2636950155, "rx_time": 1784878711, "rx_snr": -6.25, "hop_limit": 1, "rx_rssi": -109, "hop_start": 4, "relay_node": 206, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "SFNarrow", "gateway_id": "!db2962ec" }, "mesh_packet": { "from": 1830209931, "to": 4294967295, "channel": 32, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhNmQxNmM5OGISH1NFLUdBTC1VVFJFUkEtU0FFLTA0IOKYgO+4j/CflIsaBFNBRTQiBu9dbRbJiyg/OAxCIFDrlvHrrTF3pb4Ojq0c1J1AU7HFGtxyV992X3Eb2JkmSAA=", "bitfield": 1, "parsed_payload": { "id": "!6d16c98b", "long_name": "SE-GAL-UTRERA-SAE-04 ☀️🔋", "short_name": "SAE4", "macaddr": "711tFsmL", "hw_model": "NRF52_PROMICRO_DIY", "role": "CLIENT_BASE", "public_key": "UOuW8eutMXelvg6OrRzUnUBTscUa3HJX33ZfcRvYmSY=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 2636950155, "rx_time": 1784878711, "rx_snr": -6.25, "hop_limit": 1, "rx_rssi": -109, "hop_start": 4, "relay_node": 206, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (98 bytes)

0a09213664313663393862121f53452d47414c2d5554524552412d5341452d303420e29880efb88ff09f948b1a04534145342206ef5d6d16c98b283f380c422050eb96f1ebad3177a5be0e8ead1cd49d4053b1c51adc7257df765f711bd899264800

Hex Analysis:

Size:	98 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 #1658455 Success

Packet Information

Payload Data

Decoded Data: