Packet #29187701 Success

POSITION_APP packet from SkG@Tracker 📱 (SkGT) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	29187701
Mesh Packet ID:	`0xb9d2681e` Used for correlation across gateways
Timestamp:	2025-12-21 18:16:53 UTC
From Node:	SkG@Tracker 📱 (SkGT)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	chenton (chtn)
Channel:	MediumFast
RSSI:	-124 dBm
SNR:	-12.25 dBm
Hop Info:	3/5 hops Start: 5, Limit: 2
Relay Node:	`b5` Last byte of the last hop that relayed this packet

Payload Data

Protocol: POSITION_APP

Size: 37 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.324301°
Longitude:	-3.846963°
Altitude:	682 m
Satellites:	14
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:	37 bytes
Gateway:	!711dd570
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
+ 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`	`!711dd570` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (37 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1555771960` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`37` 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`	`-124.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.25` dB Signal quality at gateway	float
`rx_time`	`1766341012` 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`	`181` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1766341013.6265168` 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:	`!711dd570`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`
Signal Metrics:	RSSI: -124.0 dBm SNR: -12.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	37 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.3243008, "longitude": -3.8469632, "altitude": 682, "sats_in_view": 14, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!711dd570", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1555771960, "to": 4294967295, "id": 3117574174, "rx_time": 1766341012, "rx_snr": -12.25, "rx_rssi": -124, "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": 181, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00000918150000b5fd18aa0525933948692802589b0178288001c0a1d40398010eb8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403243008, "longitude_i": -38469632, "altitude": 682, "time": 1766341011, "location_source": "LOC_INTERNAL", "PDOP": 155, "ground_speed": 40, "ground_track": 7672000, "sats_in_view": 14, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (37 bytes)

0d00000918150000b5fd18aa0525933948692802589b0178288001c0a1d40398010eb8010f

Hex Analysis:

Size:	37 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
chenton (chtn) Primary	0.000s Reference	-124.0 dBm	-12.25 dB	3	`b5`	MediumFast	2025-12-21 18:16:53 UTC	Current
🎄 SkG@Home 📡🌐 (SkGH)	-1.750s Before	-83.0 dBm	6.25 dB	1	`56` 8d56 , 3d56	MediumFast	2025-12-21 18:16:51 UTC	View
Venturada2 🗼🌞 (Vb2)	-1.255s Before	-87.0 dBm	7.50 dB	2	`61` TO1	MediumFast	2025-12-21 18:16:52 UTC	View
JAGO1_Cañaveral (JAGO)	-0.906s Before	-120.0 dBm	-10.75 dB	3	`b0` Vbm , PUPM , Vb2	MediumFast	2025-12-21 18:16:52 UTC	View
Ocumare Norte🗼🌐 (RRN)	-0.901s Before	-101.0 dBm	-6.25 dB	3	`b0` Vbm , Vb2	MediumFast	2025-12-21 18:16:52 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-0.866s Before	-78.0 dBm	8.25 dB	3	`b0` Vbm , Vb2	MediumFast	2025-12-21 18:16:52 UTC	View
PXT_Home (PXT1)	-0.744s Before	-122.0 dBm	-13.00 dB	2	`7d` BAS3	MediumFast	2025-12-21 18:16:52 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	-0.540s Before	-96.0 dBm	1.75 dB	3	`b0` Vbm , Vb2	MediumFast	2025-12-21 18:16:53 UTC	View
Eagle’s Nest (EAGL)	-0.483s Before	-107.0 dBm	2.50 dB	3	`74`	MediumFast	2025-12-21 18:16:53 UTC	View
Villalbilla02 (VBV2)	-0.275s Before	-115.0 dBm	-7.00 dB	3	`b0` Vb2	MediumFast	2025-12-21 18:16:53 UTC	View
Meshtastic b2b4📡🌐 (b2b4)	-0.265s Before	-112.0 dBm	-9.75 dB	4	`e2` Red	MediumFast	2025-12-21 18:16:53 UTC	View
Karabanchel_Baldur (KarB)	-0.260s Before	-107.0 dBm	-13.00 dB	4	`e2` Red	MediumFast	2025-12-21 18:16:53 UTC	View
Varela Bot 🏡🤖 (🤖)	-0.218s Before	-79.0 dBm	9.75 dB	3	`1c` 🏡	MediumFast	2025-12-21 18:16:53 UTC	View
Aldinra_1640_🗼_🌐 (AldB)	-0.193s Before	-121.0 dBm	-11.00 dB	3	`b5` Knb0	MediumFast	2025-12-21 18:16:53 UTC	View
ETH Maverick (ET01)	-0.054s Before	-104.0 dBm	-14.75 dB	3	`d8` ROG1 , MMin	MediumFast	2025-12-21 18:16:53 UTC	View
Quixote_JS8_7 (QXT7)	+0.451s After	-18.0 dBm	10.75 dB	4	-	MediumFast	2025-12-21 18:16:54 UTC	View
Quixote_JS8_5🗼🌐 (QXT5)	+0.463s After	-114.0 dBm	-9.00 dB	4	-	MediumFast	2025-12-21 18:16:54 UTC	View
Meshtastic 1760 (1760)	+0.467s After	-116.0 dBm	0.25 dB	4	`40` AldB	MediumFast	2025-12-21 18:16:54 UTC	View
Meshtastic 18a4 (18a4)	+0.478s After	-111.0 dBm	-7.25 dB	4	`40` AldB	MediumFast	2025-12-21 18:16:54 UTC	View
🤖 Nicolas Cage 🌐 (Cage)	+0.545s After	-117.0 dBm	-9.25 dB	5	`88` KarB	MediumFast	2025-12-21 18:16:54 UTC	View
ETH Goose (ET03)	+0.873s After	-28.0 dBm	10.75 dB	4	`41` ET01	MediumFast	2025-12-21 18:16:54 UTC	View

21

Total Receptions

21

Unique Gateways