Packet #27693846 Success

POSITION_APP packet from Calnus - Base (CALB) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	27693846
Mesh Packet ID:	`0x59815cfe` Used for correlation across gateways
Timestamp:	2025-12-14 22:42:58 UTC
From Node:	Calnus - Base (CALB)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	mario (mmm)
Channel:	MediumFast
RSSI:	-118 dBm
SNR:	-15.25 dBm
Hop Info:	2/4 hops Start: 4, Limit: 2
Relay Node:	`b0` Vb2 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: 33 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.448819°
Longitude:	-3.434086°
Altitude:	591 m
Satellites:	10
Precision:	13 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:	!ba731968
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	2 / 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`	`!ba731968` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (33 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2641270696` 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`	`2` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-118.0` dBm Signal strength at gateway	int32
`rx_snr`	`-15.25` dB Signal quality at gateway	float
`rx_time`	`1765752160` 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`	`176` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765752178.5148993` 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: ~2900.0m accuracy

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!ba731968`
Position Precision:	13 bits (~2900.0m accuracy)
Position precision meters:	`2900.0`
Signal Metrics:	RSSI: -118.0 dBm SNR: -15.25 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": 40.4488192, "longitude": -3.4340864, "altitude": 591, "sats_in_view": 10, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ba731968", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2641270696, "to": 4294967295, "id": 1501650174, "rx_time": 1765752160, "rx_snr": -15.25, "rx_rssi": -118, "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": 176, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00001c18150000f4fd18cf0425703d3f692802587e780080010098010ab8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 404488192, "longitude_i": -34340864, "altitude": 591, "time": 1765752176, "location_source": "LOC_INTERNAL", "PDOP": 126, "ground_speed": 0, "ground_track": 0, "sats_in_view": 10, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (33 bytes)

0d00001c18150000f4fd18cf0425703d3f692802587e780080010098010ab8010d

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
mario (mmm) Primary	0.000s Reference	-118.0 dBm	-15.25 dB	2	`b0` Vb2	MediumFast	2025-12-14 22:42:58 UTC	Current
Mec Rocket Meco (MRM)	-1.963s Before	-109.0 dBm	-10.00 dB	0	`a8` CALB	MediumFast	2025-12-14 22:42:56 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	-1.616s Before	-98.0 dBm	0.50 dB	0	`a8` CALB	MediumFast	2025-12-14 22:42:56 UTC	View
Venturada2 🗼🌞 (Vb2)	-0.688s Before	-104.0 dBm	-14.00 dB	1	`e8` GRN1 , LCG1	MediumFast	2025-12-14 22:42:57 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-0.397s Before	-79.0 dBm	7.50 dB	2	`b0` Vbm , Vb2	MediumFast	2025-12-14 22:42:58 UTC	View
Rodashtastic🗼🌐 (RDSt)	-0.347s Before	-101.0 dBm	6.50 dB	2	`e7` BJN	MediumFast	2025-12-14 22:42:58 UTC	View
Ocumare Norte🗼🌐 (RRN)	-0.320s Before	-104.0 dBm	-11.00 dB	2	`b0` Vbm , Vb2	MediumFast	2025-12-14 22:42:58 UTC	View
Fenix (FENX)	+0.685s After	-120.0 dBm	-12.25 dB	2	`61` TO1	MediumFast	2025-12-14 22:42:59 UTC	View
Villarejo01 (VIL1)	+0.732s After	-117.0 dBm	-13.25 dB	2	`61` TO1	MediumFast	2025-12-14 22:42:59 UTC	View
Karabanchel_Baldur (KarB)	+0.802s After	-88.0 dBm	5.00 dB	3	`24` vid	MediumFast	2025-12-14 22:42:59 UTC	View
Eagle’s Nest (EAGL)	+1.099s After	-105.0 dBm	4.00 dB	3	`03` SMR5	MediumFast	2025-12-14 22:42:59 UTC	View
Skynet (Sky)	+1.117s After	-71.0 dBm	-1.25 dB	3	`24` vid	MediumFast	2025-12-14 22:42:59 UTC	View
tizon (Sylv)	+1.143s After	-120.0 dBm	-12.00 dB	3	`24` vid	MediumFast	2025-12-14 22:42:59 UTC	View
Quass001 ☄️ (Q001)	+1.268s After	-48.0 dBm	9.50 dB	3	`3a` Q005	MediumFast	2025-12-14 22:42:59 UTC	View
ETH Goose (ET03)	+1.581s After	-25.0 dBm	11.00 dB	3	`41` ET01	MediumFast	2025-12-14 22:43:00 UTC	View
JAGO1_Cañaveral (JAGO)	+1.587s After	Unknown	11.00 dB	4	`70` JAG2	MediumFast	2025-12-14 22:43:00 UTC	View
P3 iGate 🏠🌐 (P3N2)	+2.432s After	-37.0 dBm	11.25 dB	4	`25` P3N1	MediumFast	2025-12-14 22:43:00 UTC	View
Varela Bot 🏡🤖 (🤖)	+6.150s After	-80.0 dBm	9.00 dB	3	`1c` 🏡	MediumFast	2025-12-14 22:43:04 UTC	View
Meshtastic b2b4📡🌐 (b2b4)	+9.414s After	-117.0 dBm	-10.00 dB	4	`88` KarB	MediumFast	2025-12-14 22:43:07 UTC	View

19

Total Receptions

19

Unique Gateways