Packet #27336077 Success

POSITION_APP packet from EA3HGK CLM-8 (Gio) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	27336077
Mesh Packet ID:	`0xb431fb1b` Used for correlation across gateways
Timestamp:	2025-12-13 06:34:17 UTC
From Node:	EA3HGK CLM-8 (Gio)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	CV-Oriol-GW-8 📡 (CVO2)
Channel:	LongFast
RSSI:	-114 dBm
SNR:	-4.0 dBm
Hop Info:	1/4 hops Start: 4, Limit: 3
Relay Node:	`0a` Last byte of the last hop that relayed this packet

Payload Data

Protocol: POSITION_APP

Size: 33 bytes

Decoded: Yes

Decoded Data:

Latitude:	41.468314°
Longitude:	1.822310°
Altitude:	207 m
Satellites:	19
Precision:	19 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:	33 bytes
Gateway:	!bc32b3b4
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	1 / 4

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
+ 4 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!bc32b3b4` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (33 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2054761996` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`33` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-114.0` dBm Signal strength at gateway	int32
`rx_snr`	`-4.00` dB Signal quality at gateway	float
`rx_time`	`1765708328` 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`	`10` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765607657.6000674` 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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!bc32b3b4`
Position Precision:	19 bits (~45.0m accuracy)
Position precision meters:	`45.0`
Signal Metrics:	RSSI: -114.0 dBm SNR: -4.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	33 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 41.4683136, "longitude": 1.8223104, "altitude": 207, "sats_in_view": 19, "precision_bits": 19 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!bc32b3b4", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2054761996, "to": 4294967295, "id": 3023174427, "rx_time": 1765708328, "rx_snr": -4.0, "rx_rssi": -114, "hop_limit": 3, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 10, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0090b718150010160118cf0125e8083d69280258777800800100980113b80113", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 414683136, "longitude_i": 18223104, "altitude": 207, "time": 1765607656, "location_source": "LOC_INTERNAL", "PDOP": 119, "ground_speed": 0, "ground_track": 0, "sats_in_view": 19, "precision_bits": 19, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (33 bytes)

0d0090b718150010160118cf0125e8083d69280258777800800100980113b80113

Hex Analysis:

Size:	33 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
CV-Oriol-GW-8 📡 (CVO2) Primary	0.000s Reference	-114.0 dBm	-4.00 dB	1	`0a`	LongFast	2025-12-13 06:34:17 UTC	Current
EA3HGK 🔗 Sant Llorenç d'Hortons (Gio)	-1.340s Before	-37.0 dBm	6.75 dB	0	`0c` Gio	LongFast	2025-12-13 06:34:16 UTC	View
Rubí - FCSv4 (FCS4)	-0.207s Before	-93.0 dBm	2.50 dB	1	`0a`	LongFast	2025-12-13 06:34:17 UTC	View
EAMG_rubí 🏠 (EAMG)	+1.003s After	-89.0 dBm	-19.50 dB	2	`e0` FCS4	LongFast	2025-12-13 06:34:18 UTC	View
EA3KZ-02 Terrassa (KZ02)	+1.008s After	-101.0 dBm	-5.75 dB	2	`e0` FCS4	LongFast	2025-12-13 06:34:18 UTC	View
CROQUETASTIC-CL-868 (CRQT)	+1.675s After	-134.0 dBm	-10.75 dB	2	`fc` PTHX	LongFast	2025-12-13 06:34:19 UTC	View
StBoiCLM-8jj (SBJ1)	+2.354s After	-115.0 dBm	-7.00 dB	2	`10`	LongFast	2025-12-13 06:34:19 UTC	View
CODY-ConcaDeTremp-GW-868 (CODY)	+2.371s After	-128.0 dBm	-20.50 dB	3	`8f`	LongFast	2025-12-13 06:34:19 UTC	View
EA3JAV-SBD-MPL2-CM-8 🏠 (MPL2)	+2.672s After	-128.0 dBm	-18.25 dB	3	`8f`	LongFast	2025-12-13 06:34:20 UTC	View
g0maintt (g0mq)	+2.864s After	-77.0 dBm	-6.75 dB	3	`60` g0sr	LongFast	2025-12-13 06:34:20 UTC	View
Kira fijo casa (EVA1)	+3.278s After	-94.0 dBm	-2.50 dB	3	`50` KZ02	LongFast	2025-12-13 06:34:20 UTC	View
EB3FWC-Girona📡-GW-868 (EB3F)	+3.544s After	-87.0 dBm	3.75 dB	4	-	LongFast	2025-12-13 06:34:21 UTC	View
🇮🇨nomada81🇪🇸 (YETi)	+3.635s After	-111.0 dBm	-8.25 dB	4	-	LongFast	2025-12-13 06:34:21 UTC	View
MontcadaCentro-CL-868🗼🌐 (d9e8)	+5.312s After	-78.0 dBm	7.00 dB	4	`18` SPAX	LongFast	2025-12-13 06:34:22 UTC	View
XDCP-GW-8 (XDC3)	+10.328s After	-118.0 dBm	-20.25 dB	4	`b8` EVA1	LongFast	2025-12-13 06:34:27 UTC	View

15

Total Receptions

15

Unique Gateways