Packet #2685156 Success

POSITION_APP packet from PA3JH RAK 📟 (3JH4) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	2685156
Mesh Packet ID:	`0xbc420fc4` Used for correlation across gateways
Timestamp:	2025-08-16 13:13:43 UTC
From Node:	PA3JH RAK 📟 (3JH4)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	PA3JH 🏠 (2.7.5) (3JH1)
Channel:	LongFast
RSSI:	-25 dBm
SNR:	6.0 dBm
Hop Info:	0/5 hops Start: 5, Limit: 5

Payload Data

Protocol: POSITION_APP

Size: 36 bytes

Decoded: Yes

Decoded Data:

Latitude:	51.461362°
Longitude:	5.465123°
Altitude:	52 m
Satellites:	6
Precision:	32 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:	36 bytes
Gateway:	!a2ea1998
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	Unknown / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a2ea1998` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (36 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`482352614` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`36` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-25.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.00` dB Signal quality at gateway	float
`rx_time`	`1755342822` 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`	`230` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755342823.0494964` Unix timestamp	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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!a2ea1998`
Position Precision:	32 bits (~1.0m accuracy)
Position precision meters:	`1.0`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -25.0 dBm SNR: 6.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	36 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 51.4613625, "longitude": 5.4651228, "altitude": 52, "sats_in_view": 6, "precision_bits": 32 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a2ea1998", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 482352614, "to": 4294967295, "id": 3158446020, "rx_time": 1755342822, "rx_snr": 6.0, "rx_rssi": -25, "hop_limit": 5, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 230, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d7961ac1e155ce94103183425e567a068280258d20178058001c0f4d906980106b80120", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 514613625, "longitude_i": 54651228, "altitude": 52, "time": 1755342821, "location_source": "LOC_INTERNAL", "PDOP": 210, "ground_speed": 5, "ground_track": 14056000, "sats_in_view": 6, "precision_bits": 32, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (36 bytes)

0d7961ac1e155ce94103183425e567a068280258d20178058001c0f4d906980106b80120

Hex Analysis:

Size:	36 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	Channel	Timestamp	Actions
PA3JH 🏠 (2.7.5) (3JH1) Primary	0.000s Reference	-25.0 dBm	6.00 dB	0	LongFast	2025-08-16 13:13:43	Current
PA3JH 🗼 (2.7.3) (3JH2)	+23.578s After	-102.0 dBm	-12.00 dB	2	LongFast	2025-08-16 13:14:06	View
Daniela VHV (dnla)	+24.312s After	-101.0 dBm	5.75 dB	3	LongFast	2025-08-16 13:14:07	View
Meshtastic gf30c (gf3c)	+193.443s After	-135.0 dBm	-12.00 dB	2	LongFast	2025-08-16 13:16:56	View
Soesterduinen🔌 🌐 🛰️ (🌲)	+193.578s After	-121.0 dBm	-15.75 dB	2	LongFast	2025-08-16 13:16:56	View
Meshbase (Mshb)	+193.772s After	-123.0 dBm	-13.50 dB	2	LongFast	2025-08-16 13:16:56	View
HolRad (HlRd)	+193.906s After	-126.0 dBm	-17.00 dB	2	LongFast	2025-08-16 13:16:56	View
dJoris 📡🏠🌐 StaRF (j8bc)	+193.929s After	-124.0 dBm	-18.50 dB	2	LongFast	2025-08-16 13:16:56	View
Meshtastic bb5c (bb5c)	+193.943s After	-122.0 dBm	-20.25 dB	2	LongFast	2025-08-16 13:16:56	View
QLMeshBase - Apeldoorn (QLMB)	+193.959s After	-125.0 dBm	-13.75 dB	2	LongFast	2025-08-16 13:16:57	View
Hatate (GSK0)	+193.975s After	-103.0 dBm	-9.25 dB	2	LongFast	2025-08-16 13:16:57	View
Joozt - Rijen 🏠 (JZT)	+193.989s After	-120.0 dBm	-10.50 dB	2	LongFast	2025-08-16 13:16:57	View
Tubetastic 🏠 (TTH)	+194.004s After	-121.0 dBm	-10.75 dB	2	LongFast	2025-08-16 13:16:57	View
Meshtastic f61e (f61e)	+195.033s After	-34.0 dBm	6.00 dB	3	LongFast	2025-08-16 13:16:58	View
Colossus 1 (ccw1)	+195.049s After	-124.0 dBm	-19.00 dB	3	LongFast	2025-08-16 13:16:58	View
ALM-BC-Satisfaction (Ally)	+195.168s After	-109.0 dBm	-10.25 dB	3	LongFast	2025-08-16 13:16:58	View
NL-3545-Knalliebar (KNB0)	+196.346s After	-109.0 dBm	2.75 dB	3	LongFast	2025-08-16 13:16:59	View
Xebia 🌐🔌 Hilversum Bridge (XHB)	+198.202s After	-87.0 dBm	10.75 dB	4	LongFast	2025-08-16 13:17:01	View
Sjaak500's Relay Station (s500)	+198.962s After	-127.0 dBm	-17.00 dB	4	LongFast	2025-08-16 13:17:02	View
Terwinselen \| Kerkrade \| Netherlands (TKNB)	+201.495s After	-123.0 dBm	-5.00 dB	4	OpenChat	2025-08-16 13:17:04	View
Ulftastic Fixed 1 (UTF1)	+604.962s After	-125.0 dBm	-16.25 dB	2	LongFast	2025-08-16 13:23:48	View

21

Total Receptions

21

Unique Gateways