Packet #28406007 Success

POSITION_APP packet from Skynet (Sky) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	28406007
Mesh Packet ID:	`0x9fea2bdb` Used for correlation across gateways
Timestamp:	2025-12-18 04:38:59 UTC
From Node:	Skynet (Sky)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Meshtastic 18a4 (18a4)
Channel:	MediumFast
RSSI:	-122 dBm
SNR:	-13.25 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0
Relay Node:	`40` AldB 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: 20 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.324301°
Longitude:	-3.702784°
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:	20 bytes
Gateway:	!c0c318a4
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	7 / 7

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`	`!c0c318a4` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (20 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2004125455` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`20` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-122.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.25` dB Signal quality at gateway	float
`rx_time`	`1766032945` 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`	`64` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1766032739.2890072` 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 (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!c0c318a4`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`
Signal Metrics:	RSSI: -122.0 dBm SNR: -13.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	20 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.3243008, "longitude": -3.702784, "altitude": null, "sats_in_view": null, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!c0c318a4", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2004125455, "to": 4294967295, "id": 2682923995, "rx_time": 1766032945, "rx_snr": -13.25, "rx_rssi": -122, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 64, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00000918150000cbfd253e8543692803b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403243008, "longitude_i": -37027840, "time": 1766032702, "location_source": "LOC_EXTERNAL", "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (20 bytes)

0d00000918150000cbfd253e8543692803b8010f

Hex Analysis:

Size:	20 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
Meshtastic 18a4 (18a4) Primary	0.000s Reference	-122.0 dBm	-13.25 dB	7	`40` AldB	MediumFast	2025-12-18 04:38:59 UTC	Current
Meshtastic b2b4📡🌐 (b2b4)	-36.799s Before	-107.0 dBm	-5.25 dB	1	`2d` SkyB	MediumFast	2025-12-18 04:38:22 UTC	View
Karabanchel_Baldur (KarB)	-36.796s Before	-92.0 dBm	5.50 dB	1	`2d` SkyB	MediumFast	2025-12-18 04:38:22 UTC	View
tizon (Sylv)	-36.482s Before	-122.0 dBm	-13.75 dB	1	`2d` SkyB	MediumFast	2025-12-18 04:38:22 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-36.159s Before	-102.0 dBm	-10.50 dB	2	`88` KarB	MediumFast	2025-12-18 04:38:23 UTC	View
🤖 Nicolas Cage 🌐 (Cage)	-35.906s Before	-11.0 dBm	11.25 dB	0	`0f` Sky	MediumFast	2025-12-18 04:38:23 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	-35.725s Before	-106.0 dBm	-1.25 dB	2	-	MediumFast	2025-12-18 04:38:23 UTC	View
Meshtastic 26b0 (26b0)	-35.667s Before	-96.0 dBm	-6.00 dB	3	`c8` c4c8	MediumFast	2025-12-18 04:38:23 UTC	View
Ocumare Norte🗼🌐 (RRN)	-35.379s Before	-104.0 dBm	-8.00 dB	4	`b0` Vbm , 26b0	MediumFast	2025-12-18 04:38:23 UTC	View
Pozuelo (POZ1)	-35.115s Before	-93.0 dBm	-11.25 dB	4	`b0` 26b0	MediumFast	2025-12-18 04:38:24 UTC	View
JAGO1_Cañaveral (JAGO)	-34.323s Before	Unknown	11.00 dB	5	`70` JAG2	MediumFast	2025-12-18 04:38:24 UTC	View
🎄 SkG@Home 📡🌐 (SkGH)	-33.986s Before	-83.0 dBm	-12.75 dB	5	`56` 8d56 , 3d56	MediumFast	2025-12-18 04:38:25 UTC	View
P3 iGate 🏠🌐 (P3N2)	-33.790s Before	-39.0 dBm	11.50 dB	5	`25` P3N1	MediumFast	2025-12-18 04:38:25 UTC	View
Mec Rocket Meco (MRM)	-33.476s Before	-109.0 dBm	-6.25 dB	6	`a8` CALB	MediumFast	2025-12-18 04:38:25 UTC	View
PXT_Home (PXT1)	-33.264s Before	-113.0 dBm	-4.00 dB	6	`a4` HelB	MediumFast	2025-12-18 04:38:26 UTC	View
MakeSpaceMadrid (MKS)	-32.514s Before	-95.0 dBm	10.75 dB	6	`d1` MKS2	MediumFast	2025-12-18 04:38:26 UTC	View
Quixote_JS8_5🗼🌐 (QXT5)	-32.298s Before	-115.0 dBm	-5.25 dB	7	-	MediumFast	2025-12-18 04:38:26 UTC	View
Quixote_JS8_7 (QXT7)	-32.295s Before	-18.0 dBm	11.25 dB	7	-	MediumFast	2025-12-18 04:38:26 UTC	View
Villarejo01 (VIL1)	-29.572s Before	-35.0 dBm	11.00 dB	5	`c6` d5c6	MediumFast	2025-12-18 04:38:29 UTC	View
ETH Maverick (ET01)	-29.462s Before	-105.0 dBm	-13.00 dB	4	`61` TO1	MediumFast	2025-12-18 04:38:29 UTC	View
ETH Goose (ET03)	-28.443s Before	-39.0 dBm	10.50 dB	5	`41` ET01	MediumFast	2025-12-18 04:38:30 UTC	View
Eagle’s Nest (EAGL)	-27.925s Before	-113.0 dBm	-2.75 dB	5	`74`	MediumFast	2025-12-18 04:38:31 UTC	View
Fenix (FENX)	-27.720s Before	-117.0 dBm	-10.25 dB	4	`61` TO1	MediumFast	2025-12-18 04:38:31 UTC	View
Varela Bot 🏡🤖 (🤖)	-26.249s Before	-84.0 dBm	8.50 dB	3	`1c` 🏡	MediumFast	2025-12-18 04:38:33 UTC	View
[samsepi0l] 📡🌐 (tlg0)	-20.112s Before	-88.0 dBm	-1.75 dB	5	`a4` Raq1	MediumFast	2025-12-18 04:38:39 UTC	View
Aldinra_1640_🗼_🌐 (AldB)	-0.632s Before	-118.0 dBm	-9.25 dB	6	`b5` Knb0	MediumFast	2025-12-18 04:38:58 UTC	View
Meshtastic 1760 (1760)	-0.003s Before	-114.0 dBm	2.50 dB	7	`40` AldB	MediumFast	2025-12-18 04:38:59 UTC	View
X Wing 🚀 Kenobi (Knb2)	+1.674s After	-36.0 dBm	11.75 dB	6	`b5` Knb0	MediumFast	2025-12-18 04:39:00 UTC	View

28

Total Receptions

28

Unique Gateways