Packet #28299640 Success

POSITION_APP packet from 🎄 SkG@Home 📡🌐 (SkGH) to Sierra norte Madrid ⛰️🗼🌞 (SNM)

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	28299640
Mesh Packet ID:	`0xcbda7ec0` Used for correlation across gateways
Timestamp:	2025-12-17 16:27:29 UTC
From Node:	🎄 SkG@Home 📡🌐 (SkGH)
To Node:	Sierra norte Madrid ⛰️🗼🌞 (SNM)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	TweeteR ☀🔋 (TwT)
Channel:	MediumFast
RSSI:	-106 dBm
SNR:	3.25 dBm
Hop Info:	2/4 hops Start: 4, Limit: 2
Relay Node:	`85` FTO1 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:	40.337408°
Longitude:	-3.820749°
Altitude:	720 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:	28 bytes
Gateway:	!db2ac798
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	2 / 4

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 3 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db2ac798` 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`	`321289828` Source node ID	uint32
`to`	`1129719940` Target node ID	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`28` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-106.0` dBm Signal strength at gateway	int32
`rx_snr`	`3.25` dB Signal quality at gateway	float
`rx_time`	`1765988822` 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`	`133` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765988849.8988347` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Custom channel: MediumFast
✓ Gateway node ID tracked
✓ Reduced position precision: ~729.0m accuracy

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2ac798`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`
Signal Metrics:	RSSI: -106.0 dBm SNR: 3.25 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": 40.337408, "longitude": -3.8207488, "altitude": 720, "sats_in_view": null, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2ac798", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 321289828, "to": 1129719940, "id": 3420094144, "rx_time": 1765988822, "rx_snr": 3.25, "rx_rssi": -106, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 133, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00000b18150000b9fd18d00525c7d9426928017800800100b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403374080, "longitude_i": -38207488, "altitude": 720, "time": 1765988807, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (28 bytes)

0d00000b18150000b9fd18d00525c7d9426928017800800100b8010f

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
TweeteR ☀🔋 (TwT) Primary	0.000s Reference	-106.0 dBm	3.25 dB	2	`85` FTO1	MediumFast	2025-12-17 16:27:29 UTC	Current
🎄 SkG@Home 📡🌐 (SkGH)	-42.240s Before	Unknown	Unknown	0	`64` SkGH	MediumFast	2025-12-17 16:26:47 UTC	View
ETH Maverick (ET01)	-30.480s Before	-91.0 dBm	7.75 dB	2	`72` Knb1	MediumFast	2025-12-17 16:26:59 UTC	View
PXT_Home (PXT1)	-26.703s Before	-111.0 dBm	-6.75 dB	2	`11` BAS1	MediumFast	2025-12-17 16:27:03 UTC	View
ETH Goose (ET03)	-25.310s Before	-39.0 dBm	11.00 dB	3	`41` ET01	MediumFast	2025-12-17 16:27:04 UTC	View
Meshtastic 26b0 (26b0)	-22.915s Before	-88.0 dBm	8.50 dB	2	`61` TO1	MediumFast	2025-12-17 16:27:06 UTC	View
Fenix (FENX)	-22.564s Before	-118.0 dBm	-11.00 dB	2	`61` TO1	MediumFast	2025-12-17 16:27:07 UTC	View
Ocumare Norte🗼🌐 (RRN)	-22.222s Before	-107.0 dBm	-13.25 dB	3	`b0` Vbm , 26b0	MediumFast	2025-12-17 16:27:07 UTC	View
Meshtastic 1760 (1760)	-21.888s Before	-132.0 dBm	-12.25 dB	3	`b0` 26b0	MediumFast	2025-12-17 16:27:08 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	-21.883s Before	-99.0 dBm	-2.00 dB	3	`b0` Vbm , 26b0	MediumFast	2025-12-17 16:27:08 UTC	View
Meshtastic 18a4 (18a4)	-21.498s Before	Unknown	Unknown	4	`60` 1760	MediumFast	2025-12-17 16:27:08 UTC	View
Villarejo01 (VIL1)	-21.255s Before	-37.0 dBm	11.25 dB	3	`c6` d5c6	MediumFast	2025-12-17 16:27:08 UTC	View
Quixote_JS8_7 (QXT7)	-21.227s Before	-18.0 dBm	11.00 dB	4	-	MediumFast	2025-12-17 16:27:08 UTC	View
Quixote_JS8_5🗼🌐 (QXT5)	-21.224s Before	-114.0 dBm	-9.75 dB	4	-	MediumFast	2025-12-17 16:27:08 UTC	View
🏔️Cerro del Aire🏔️_ b03c (CDA)	-20.892s Before	-120.0 dBm	-12.00 dB	4	`f5` RPT4	MediumFast	2025-12-17 16:27:09 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-19.477s Before	-78.0 dBm	7.75 dB	3	`b0` Vbm , 26b0	MediumFast	2025-12-17 16:27:10 UTC	View
Eagle’s Nest (EAGL)	-19.237s Before	-114.0 dBm	-4.75 dB	3	`74`	MediumFast	2025-12-17 16:27:10 UTC	View
P3 iGate 🏠🌐 (P3N2)	-18.514s Before	-37.0 dBm	11.25 dB	4	`25` P3N1	MediumFast	2025-12-17 16:27:11 UTC	View
TweeteR ☀🔋 (TwT)	-14.009s Before	-106.0 dBm	3.25 dB	2	`85` FTO1	MediumFast	2025-12-17 16:27:15 UTC	View

19

Total Receptions

18

Unique Gateways