Packet #29041377 Success

POSITION_APP packet from HeliosBase 🔆 (HelB) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	29041377
Mesh Packet ID:	`0x3e9666d3` Used for correlation across gateways
Timestamp:	2025-12-21 01:57:11 UTC
From Node:	HeliosBase 🔆 (HelB)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	g1bal (g1b0)
Channel:	MediumFast
RSSI:	-108 dBm
SNR:	-2.25 dBm
Hop Info:	3/5 hops Start: 5, Limit: 2
Relay Node:	`f5` RPT4 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: 28 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.313242°
Longitude:	-3.877683°
Altitude:	656 m
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:	28 bytes
Gateway:	!a0cb1ca0
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	3 / 5

Privacy Summary

Exposure Level:
Broadcast

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

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a0cb1ca0` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (28 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3679544228` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`28` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-108.0` dBm Signal strength at gateway	int32
`rx_snr`	`-2.25` dB Signal quality at gateway	float
`rx_time`	`1766282230` 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`	`245` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1766282231.5539198` 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

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!a0cb1ca0`
Position Precision:	19 bits (~45.0m accuracy)
Position precision meters:	`45.0`
Signal Metrics:	RSSI: -108.0 dBm SNR: -2.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	28 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.3132416, "longitude": -3.8776832, "altitude": 656, "sats_in_view": null, "precision_bits": 19 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a0cb1ca0", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3679544228, "to": 4294967295, "id": 1050044115, "rx_time": 1766282230, "rx_snr": -2.25, "rx_rssi": -108, "hop_limit": 2, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 245, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00500718150050b0fd18900525f153476928037800800100b80113", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403132416, "longitude_i": -38776832, "altitude": 656, "time": 1766282225, "location_source": "LOC_EXTERNAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 19, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (28 bytes)

0d00500718150050b0fd18900525f153476928037800800100b80113

Hex Analysis:

Size:	28 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
g1bal (g1b0) Primary	0.000s Reference	-108.0 dBm	-2.25 dB	3	`f5` RPT4	MediumFast	2025-12-21 01:57:11 UTC	Current
PXT_Home (PXT1)	-3.984s Before	-99.0 dBm	8.75 dB	1	`fd` BAS2	MediumFast	2025-12-21 01:57:07 UTC	View
JAGO1_Cañaveral (JAGO)	-2.536s Before	-97.0 dBm	8.00 dB	3	`ab` Hch	MediumFast	2025-12-21 01:57:09 UTC	View
🎄 SkG@Home 📡🌐 (SkGH)	-2.446s Before	-94.0 dBm	-6.00 dB	2	`61` TO1	MediumFast	2025-12-21 01:57:09 UTC	View
Eagle’s Nest (EAGL)	-2.437s Before	-123.0 dBm	-13.25 dB	2	`61` TO1	MediumFast	2025-12-21 01:57:09 UTC	View
ETH Maverick (ET01)	-2.190s Before	-105.0 dBm	-14.25 dB	2	`61` TO1	MediumFast	2025-12-21 01:57:09 UTC	View
EA4IGE_Alco (astu)	-1.901s Before	-123.0 dBm	-13.25 dB	3	`64`	MediumFast	2025-12-21 01:57:09 UTC	View
Venturada2 🗼🌞 (Vb2)	-1.699s Before	-78.0 dBm	9.75 dB	2	`10` Vb	MediumFast	2025-12-21 01:57:09 UTC	View
X Wing 🚀 Kenobi (Knb2)	-1.299s Before	-111.0 dBm	-4.75 dB	2	`61` TO1	MediumFast	2025-12-21 01:57:10 UTC	View
Wake Up, Neo...📡 (NEO)	-0.927s Before	-107.0 dBm	-10.00 dB	4	`14` POZ1	MediumFast	2025-12-21 01:57:10 UTC	View
GRN2-Cli 📡🔋 (GRN2)	-0.768s Before	-132.0 dBm	-10.25 dB	3	`b0` Vb2	MediumFast	2025-12-21 01:57:10 UTC	View
Mikasa 🧣 📟 (🧣)	-0.765s Before	-104.0 dBm	-3.25 dB	3	`b0` Vb2	MediumFast	2025-12-21 01:57:10 UTC	View
Villalbilla02 (VBV2)	-0.471s Before	-116.0 dBm	-6.25 dB	3	`b0` Vb2	MediumFast	2025-12-21 01:57:11 UTC	View
ETH Goose (ET03)	-0.459s Before	-26.0 dBm	11.25 dB	3	`41` ET01	MediumFast	2025-12-21 01:57:11 UTC	View
Ocumare Norte🗼🌐 (RRN)	-0.423s Before	-99.0 dBm	-3.50 dB	3	`b0` Vbm , Vb2	MediumFast	2025-12-21 01:57:11 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-0.394s Before	-79.0 dBm	8.00 dB	3	`b0` Vbm , Vb2	MediumFast	2025-12-21 01:57:11 UTC	View
🤖 Nicolas Cage 🌐 (Cage)	+0.070s After	-100.0 dBm	7.50 dB	4	`5d` 🥖	MediumFast	2025-12-21 01:57:11 UTC	View
tizon (Sylv)	+0.111s After	-112.0 dBm	-4.75 dB	4	`5d` 🥖	MediumFast	2025-12-21 01:57:11 UTC	View
Meshtastic 1760 (1760)	+0.336s After	-120.0 dBm	-2.25 dB	3	`f5` RPT4	MediumFast	2025-12-21 01:57:11 UTC	View
Aldinra_1640_🗼_🌐 (AldB)	+0.359s After	-120.0 dBm	-10.50 dB	3	`f5` RPT4	MediumFast	2025-12-21 01:57:11 UTC	View
EA4GGL (4GGL)	+0.402s After	-127.0 dBm	-9.50 dB	4	`14` POZ1	MediumFast	2025-12-21 01:57:11 UTC	View
Quixote_JS8_7 (QXT7)	+0.590s After	-18.0 dBm	11.00 dB	4	-	MediumFast	2025-12-21 01:57:12 UTC	View
Quixote_JS8_5🗼🌐 (QXT5)	+0.593s After	-115.0 dBm	-7.00 dB	4	-	MediumFast	2025-12-21 01:57:12 UTC	View
Meshtastic 18a4 (18a4)	+0.599s After	Unknown	Unknown	4	`60` 1760	MediumFast	2025-12-21 01:57:12 UTC	View
Pozuelo (POZ1)	+2.548s After	-89.0 dBm	-9.25 dB	3	`b0` Vb2	MediumFast	2025-12-21 01:57:14 UTC	View
Quass001 ☄️ (Q001)	+5.845s After	-34.0 dBm	10.50 dB	5	`3a` Q005	MediumFast	2025-12-21 01:57:17 UTC	View
Skynet (Sky)	+11.980s After	-103.0 dBm	-8.50 dB	5	`d1` 👾	MediumFast	2025-12-21 01:57:23 UTC	View

27

Total Receptions

27

Unique Gateways