Packet #2686714 Success

POSITION_APP packet from SLE4_GPS (c650) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	2686714
Mesh Packet ID:	`0x022b6004` Used for correlation across gateways
Timestamp:	2025-08-16 13:23:47 UTC
From Node:	SLE4_GPS (c650)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Ulftastic Fixed 1 (UTF1)
Channel:	LongFast
RSSI:	-121 dBm
SNR:	-13.0 dBm
Hop Info:	1/3 hops Start: 3, Limit: 2

Payload Data

Protocol: POSITION_APP

Size: 37 bytes

Decoded: Yes

Decoded Data:

Latitude:	50.672435°
Longitude:	6.946816°
Altitude:	188 m
Satellites:	8
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:	37 bytes
Gateway:	!b03c8370
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	1 / 3

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!b03c8370` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (37 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2224735824` 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`	`3` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-121.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.00` dB Signal quality at gateway	float
`rx_time`	`1755342835` 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`	`206` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1755343427.918363` 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)
✓ Gateway node ID tracked
✓ Reduced position precision: ~2900.0m accuracy

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!b03c8370`
Position Precision:	13 bits (~2900.0m accuracy)
Position precision meters:	`2900.0`
Signal Metrics:	RSSI: -121.0 dBm SNR: -13.00 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": 50.6724352, "longitude": 6.946816, "altitude": 188, "sats_in_view": 8, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b03c8370", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2224735824, "to": 4294967295, "id": 36397060, "rx_time": 1755342835, "rx_snr": -13.0, "rx_rssi": -121, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 206, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000341e150000240418bc0125d864a0682802588402781b8001a0d1fe08980108b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 506724352, "longitude_i": 69468160, "altitude": 188, "time": 1755342040, "location_source": "LOC_INTERNAL", "PDOP": 260, "ground_speed": 27, "ground_track": 18852000, "sats_in_view": 8, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (37 bytes)

0d0000341e150000240418bc0125d864a0682802588402781b8001a0d1fe08980108b8010d

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	Channel	Timestamp	Actions
Ulftastic Fixed 1 (UTF1) Primary	0.000s Reference	-121.0 dBm	-13.00 dB	1	LongFast	2025-08-16 13:23:47	Current
9E72 Pi (9E72)	-592.216s Before	-118.0 dBm	-17.50 dB	1	LongFast	2025-08-16 13:13:55	View
Meshtastic gf30c (gf3c)	-592.081s Before	-136.0 dBm	-12.25 dB	1	LongFast	2025-08-16 13:13:55	View
EH14 - Malden (EH14)	-592.063s Before	-111.0 dBm	-7.75 dB	1	LongFast	2025-08-16 13:13:55	View
PA3JH 🏠 (2.7.5) (3JH1)	-592.048s Before	-96.0 dBm	-7.50 dB	1	LongFast	2025-08-16 13:13:55	View
Afrithon (afrt)	-591.998s Before	-96.0 dBm	2.50 dB	1	LongFast	2025-08-16 13:13:55	View
Kiep (KIEP)	-591.981s Before	-128.0 dBm	-19.25 dB	-2	LongFast	2025-08-16 13:13:55	View
Meshbase (Mshb)	-591.801s Before	-124.0 dBm	-14.00 dB	1	LongFast	2025-08-16 13:13:56	View
Aelse0001 (AE01)	-591.791s Before	-123.0 dBm	-17.00 dB	1	LongFast	2025-08-16 13:13:56	View
MT Node Pey (PEY)	-591.781s Before	-108.0 dBm	-4.25 dB	1	LongFast	2025-08-16 13:13:56	View
No13 Oirschot (OIR1)	-591.766s Before	-117.0 dBm	-8.00 dB	1	LongFast	2025-08-16 13:13:56	View
Joozt - Rijen 🏠 (JZT)	-591.751s Before	-114.0 dBm	-6.75 dB	1	LongFast	2025-08-16 13:13:56	View
Meshtastic 7c28 (7c28)	-591.638s Before	-126.0 dBm	-7.50 dB	1	LongFast	2025-08-16 13:13:56	View
Maasdijk Giessen Base Station (MGBS)	-591.621s Before	-143.0 dBm	-19.75 dB	1	LongFast	2025-08-16 13:13:56	View
RJ_Rook_1 (RJR1)	-591.603s Before	-113.0 dBm	-1.25 dB	1	LongFast	2025-08-16 13:13:56	View
Colossus 1 (ccw1)	-590.674s Before	-123.0 dBm	-14.00 dB	2	LongFast	2025-08-16 13:13:57	View
PD0WES-Louis-3543 (PL43)	-590.200s Before	-94.0 dBm	-7.25 dB	2	LongFast	2025-08-16 13:13:57	View
RSD Langdonk01 🌐 (RL01)	-590.066s Before	-49.0 dBm	6.00 dB	2	LongFast	2025-08-16 13:13:57	View
NIMB1 (6680)	-588.863s Before	-115.0 dBm	-8.25 dB	2	LongFast	2025-08-16 13:13:59	View
NL-3545-Knalliebar (KNB0)	-588.161s Before	-109.0 dBm	2.25 dB	3	LongFast	2025-08-16 13:13:59	View
Rood af7c (af7c)	-587.386s Before	-125.0 dBm	-15.50 dB	2	LongFast	2025-08-16 13:14:00	View
Daniela VHV (dnla)	-585.249s Before	-101.0 dBm	5.75 dB	3	LongFast	2025-08-16 13:14:02	View

22

Total Receptions

22

Unique Gateways