Packet #27786225 Success

POSITION_APP packet from COSLADA f1dc 🇪🇦🛰️ (f1dc) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	27786225
Mesh Packet ID:	`0xb453b35a` Used for correlation across gateways
Timestamp:	2025-12-15 08:59:58 UTC
From Node:	COSLADA f1dc 🇪🇦🛰️ (f1dc)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	srs-h3 📡🌐 (srs0)
Channel:	MediumFast
RSSI:	-121 dBm
SNR:	-14.0 dBm
Hop Info:	3/4 hops Start: 4, Limit: 1
Relay Node:	`bb` 03bb Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Payload Data

Protocol: POSITION_APP

Size: 26 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.429158°
Longitude:	-3.545498°
Altitude:	664 m
Precision:	15 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:	26 bytes
Gateway:	!433d603c
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	3 / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 2 more...

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

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!433d603c` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (26 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2661347804` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`26` 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`	`-121.0` dBm Signal strength at gateway	int32
`rx_snr`	`-14.00` dB Signal quality at gateway	float
`rx_time`	`1765789197` 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`	`187` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765789198.6185727` 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)
✓ Custom channel: MediumFast
✓ Gateway node ID tracked
✓ Reduced position precision: ~729.0m accuracy

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:	`!433d603c`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`
Signal Metrics:	RSSI: -121.0 dBm SNR: -14.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	26 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.4291584, "longitude": -3.5454976, "altitude": 664, "sats_in_view": null, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!433d603c", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2661347804, "to": 4294967295, "id": 3025384282, "rx_time": 1765789197, "rx_snr": -14.0, "rx_rssi": -121, "hop_limit": 1, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 187, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00001918150000e3fd189805250bce3f69280258f803b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 404291584, "longitude_i": -35454976, "altitude": 664, "time": 1765789195, "location_source": "LOC_INTERNAL", "PDOP": 504, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (26 bytes)

0d00001918150000e3fd189805250bce3f69280258f803b8010f

Hex Analysis:

Size:	26 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
srs-h3 📡🌐 (srs0) Primary	0.000s Reference	-121.0 dBm	-14.00 dB	3	`bb` 03bb	MediumFast	2025-12-15 08:59:58 UTC	Current
Venturada2 🗼🌞 (Vb2)	-1.871s Before	-108.0 dBm	-11.25 dB	0	`dc` f1dc	MediumFast	2025-12-15 08:59:56 UTC	View
Ocumare Norte🗼🌐 (RRN)	-1.572s Before	-108.0 dBm	-13.25 dB	1	`b0` Vbm , Vb2	MediumFast	2025-12-15 08:59:57 UTC	View
JAGO1_Cañaveral (JAGO)	-1.570s Before	-123.0 dBm	-13.75 dB	1	`b0` Vbm , PUPM , Vb2	MediumFast	2025-12-15 08:59:57 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-1.540s Before	-80.0 dBm	-10.25 dB	1	`b0` Vbm , Vb2	MediumFast	2025-12-15 08:59:57 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	-1.192s Before	-98.0 dBm	0.75 dB	1	`b0` Vbm , Vb2	MediumFast	2025-12-15 08:59:57 UTC	View
Karabanchel_Baldur (KarB)	-0.921s Before	-94.0 dBm	2.00 dB	2	`1c` 🐷	MediumFast	2025-12-15 08:59:57 UTC	View
Meshtastic b2b4📡🌐 (b2b4)	-0.918s Before	-118.0 dBm	-12.00 dB	2	`1c` 🐷	MediumFast	2025-12-15 08:59:57 UTC	View
🎄 SkG@Home 📡🌐 (SkGH)	-0.830s Before	-83.0 dBm	-13.00 dB	2	`56` 8d56 , 3d56	MediumFast	2025-12-15 08:59:57 UTC	View
Quass001 ☄️ (Q001)	-0.601s Before	-50.0 dBm	10.00 dB	2	`3a` Q005	MediumFast	2025-12-15 08:59:58 UTC	View
tizon (Sylv)	-0.591s Before	-107.0 dBm	0.50 dB	2	`1c` 🐷	MediumFast	2025-12-15 08:59:58 UTC	View
Fenix (FENX)	-0.579s Before	-115.0 dBm	-10.00 dB	2	`1c` 🐷	MediumFast	2025-12-15 08:59:58 UTC	View
ETH Maverick (ET01)	-0.576s Before	-107.0 dBm	-5.50 dB	1	`61` TO1	MediumFast	2025-12-15 08:59:58 UTC	View
Getafe ☀️ (GTF)	-0.550s Before	-119.0 dBm	-8.50 dB	2	`1c` 🐷	MediumFast	2025-12-15 08:59:58 UTC	View
NodeJPL6 (JPL6)	-0.322s Before	-100.0 dBm	-13.25 dB	1	`b0` Vb2	MediumFast	2025-12-15 08:59:58 UTC	View
Skynet (Sky)	-0.235s Before	-81.0 dBm	-11.00 dB	2	`1c` 🐷	MediumFast	2025-12-15 08:59:58 UTC	View
P3 iGate 🏠🌐 (P3N2)	-0.018s Before	-39.0 dBm	11.00 dB	2	`25` P3N1	MediumFast	2025-12-15 08:59:58 UTC	View
Eagle’s Nest (EAGL)	-0.003s Before	-116.0 dBm	-7.00 dB	2	`74`	MediumFast	2025-12-15 08:59:58 UTC	View
PXT_Home (PXT1)	+0.022s After	-114.0 dBm	-7.50 dB	3	`a4` HelB	MediumFast	2025-12-15 08:59:58 UTC	View
Zion 🗼 (Zion)	+0.222s After	-110.0 dBm	-10.75 dB	3	`11` BAS1	MediumFast	2025-12-15 08:59:58 UTC	View
ETH Goose (ET03)	+0.336s After	-30.0 dBm	10.75 dB	2	`41` ET01	MediumFast	2025-12-15 08:59:58 UTC	View
Quixote_JS8_5🗼🌐 (QXT5)	+0.659s After	-114.0 dBm	-7.50 dB	3	-	MediumFast	2025-12-15 08:59:59 UTC	View
Quixote_JS8_7 (QXT7)	+0.666s After	-18.0 dBm	10.75 dB	3	-	MediumFast	2025-12-15 08:59:59 UTC	View

23

Total Receptions

23

Unique Gateways