Packet #28420745 Success

POSITION_APP packet from JPL73B2_Node (JPL2) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	28420745
Mesh Packet ID:	`0xaf8dde4a` Used for correlation across gateways
Timestamp:	2025-12-18 06:33:36 UTC
From Node:	JPL73B2_Node (JPL2)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Karabanchel_Baldur (KarB)
Channel:	MediumFast
RSSI:	-91 dBm
SNR:	-0.75 dBm
Hop Info:	2/3 hops Start: 3, Limit: 1
Relay Node:	`2d` SkyB 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: 17 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.406221°
Longitude:	-3.548774°
Precision:	16 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:	17 bytes
Gateway:	!13280088
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	2 / 3

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`	`!13280088` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (17 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3679584520` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`17` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-91.0` dBm Signal strength at gateway	int32
`rx_snr`	`-0.75` dB Signal quality at gateway	float
`rx_time`	`1766039616` 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`	`45` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1766039616.5524437` 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 (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!13280088`
Position Precision:	16 bits (~364.0m accuracy)
Position precision meters:	`364.0`
Signal Metrics:	RSSI: -91.0 dBm SNR: -0.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	17 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.4062208, "longitude": -3.5487744, "altitude": null, "sats_in_view": null, "precision_bits": 16 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!13280088", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3679584520, "to": 4294967295, "id": 2945310282, "rx_time": 1766039616, "rx_snr": -0.75, "rx_rssi": -91, "hop_limit": 1, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 45, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00801518150080e2fd28014800b80110", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 404062208, "longitude_i": -35487744, "location_source": "LOC_MANUAL", "altitude_hae": 0, "precision_bits": 16, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (17 bytes)

0d00801518150080e2fd28014800b80110

Hex Analysis:

Size:	17 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
Karabanchel_Baldur (KarB) Primary	0.000s Reference	-91.0 dBm	-0.75 dB	2	`2d` SkyB	MediumFast	2025-12-18 06:33:36 UTC	Current
JAGO1_Cañaveral (JAGO)	-4.284s Before	-123.0 dBm	-14.75 dB	1	`b0` Vbm , PUPM , Vb2	MediumFast	2025-12-18 06:33:32 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	-3.930s Before	-100.0 dBm	-0.25 dB	1	`b0` Vbm , Vb2	MediumFast	2025-12-18 06:33:32 UTC	View
ETH Maverick (ET01)	-3.627s Before	-106.0 dBm	-14.25 dB	1	`61` TO1	MediumFast	2025-12-18 06:33:32 UTC	View
Venturada2 🗼🌞 (Vb2)	-3.583s Before	-100.0 dBm	-4.25 dB	0	`08` ET18 , JPL2	MediumFast	2025-12-18 06:33:32 UTC	View
Villarejo01 (VIL1)	-3.512s Before	-118.0 dBm	-13.75 dB	1	`61` TO1	MediumFast	2025-12-18 06:33:33 UTC	View
Ocumare Norte🗼🌐 (RRN)	-3.280s Before	-106.0 dBm	-12.75 dB	1	`b0` Vbm , Vb2	MediumFast	2025-12-18 06:33:33 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-3.212s Before	-78.0 dBm	3.25 dB	1	`b0` Vbm , Vb2	MediumFast	2025-12-18 06:33:33 UTC	View
[samsepi0l] 📡🌐 (tlg0)	-2.998s Before	-98.0 dBm	-6.00 dB	2	`c8` c4c8	MediumFast	2025-12-18 06:33:33 UTC	View
Eagle’s Nest (EAGL)	-2.868s Before	-123.0 dBm	-13.25 dB	1	`61` TO1	MediumFast	2025-12-18 06:33:33 UTC	View
ETH Goose (ET03)	-2.803s Before	-45.0 dBm	10.50 dB	2	`41` ET01	MediumFast	2025-12-18 06:33:33 UTC	View
Quixote_JS8_7 (QXT7)	-2.206s Before	-18.0 dBm	10.75 dB	3	-	MediumFast	2025-12-18 06:33:34 UTC	View
Quixote_JS8_5🗼🌐 (QXT5)	-2.202s Before	-115.0 dBm	-8.75 dB	3	-	MediumFast	2025-12-18 06:33:34 UTC	View
Mec Rocket Meco (MRM)	-2.116s Before	-109.0 dBm	-8.00 dB	2	`a8` CALB	MediumFast	2025-12-18 06:33:34 UTC	View
Varela Bot 🏡🤖 (🤖)	-1.915s Before	-82.0 dBm	8.25 dB	2	`1c` 🏡	MediumFast	2025-12-18 06:33:34 UTC	View
Meshtastic JT01 (JT01)	-0.473s Before	-112.0 dBm	0.25 dB	2	`22` JT03	MediumFast	2025-12-18 06:33:36 UTC	View
Meshtastic b2b4📡🌐 (b2b4)	-0.006s Before	-107.0 dBm	-5.25 dB	2	`2d` SkyB	MediumFast	2025-12-18 06:33:36 UTC	View
🤖 Nicolas Cage 🌐 (Cage)	+0.274s After	-61.0 dBm	11.50 dB	2	`2d` SkyB	MediumFast	2025-12-18 06:33:36 UTC	View
tizon (Sylv)	+0.299s After	-110.0 dBm	-1.25 dB	2	`2d` SkyB	MediumFast	2025-12-18 06:33:36 UTC	View

19

Total Receptions

19

Unique Gateways