Packet #12517020 Success

POSITION_APP packet from TopaZ (tpz4) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	12517020
Mesh Packet ID:	`0xe91cba2f` Used for correlation across gateways
Timestamp:	2026-03-17 11:42:07 UTC
From Node:	TopaZ (tpz4)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	SYSXX OGW8 (SXG8)
Channel:	LongFast
RSSI:	-61 dBm
SNR:	6.25 dBm
Hop Info:	5/7 hops Start: 7, Limit: 2

Payload Data

Protocol: POSITION_APP

Size: 20 bytes

Decoded: Yes

Decoded Data:

Latitude:	55.689216°
Longitude:	37.752013°
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:	20 bytes
Gateway:	!efffff03
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	5 / 7

Privacy Summary

Exposure Level:
Broadcast

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

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 4 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!efffff03` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (20 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2794860528` 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`	`2` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`5` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-61.0` dBm Signal strength at gateway	int32
`rx_snr`	`6.25` dB Signal quality at gateway	float
`rx_time`	`1773736928` 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`	`92` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1773736927.5140913` 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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared
⚠ Multi-hop path visible (5 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!efffff03`
Position Precision:	16 bits (~364.0m accuracy)
Position precision meters:	`364.0`
Signal Metrics:	RSSI: -61.0 dBm SNR: 6.25 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": 55.689216, "longitude": 37.7520128, "altitude": null, "sats_in_view": null, "precision_bits": 16 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!efffff03", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2794860528, "to": 4294967295, "id": 3910973999, "rx_time": 1773736928, "rx_snr": 6.25, "rx_rssi": -61, "hop_limit": 2, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 92, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d008031211500808016253613b9692801b80110", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 556892160, "longitude_i": 377520128, "time": 1773736758, "location_source": "LOC_MANUAL", "precision_bits": 16, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (20 bytes)

0d008031211500808016253613b9692801b80110

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	Channel	Timestamp	Actions
SYSXX OGW8 (SXG8) Primary	0.000s Reference	-61.0 dBm	6.25 dB	5	LongFast	2026-03-17 11:42:07	Current
Fostral (FSTR)	-158.117s Before	-74.0 dBm	-9.50 dB	0	LongFast	2026-03-17 11:39:29	View
EGarpunov 2 868 (Base) (BAO) (EG28)	-157.348s Before	-110.0 dBm	-4.25 dB	1	LongFast	2026-03-17 11:39:30	View
BBS Восток (DM📲) (BBSv)	-157.243s Before	-46.0 dBm	7.25 dB	1	LongFast	2026-03-17 11:39:30	View
Tsaritsyno_KB_U_868 (KBU8)	-155.834s Before	-102.0 dBm	4.00 dB	2	LongFast	2026-03-17 11:39:31	View
Tsaritsyno_KB_V_868 (KBV8)	-150.674s Before	-116.0 dBm	-12.75 dB	3	LongFast	2026-03-17 11:39:36	View
Meshtastic 6db8 (6db8)	-135.014s Before	-110.0 dBm	-17.50 dB	3	LongFast	2026-03-17 11:39:52	View
Zoͦmͫвⷡiͥeͤ [GW8] (🧟)	-133.302s Before	-109.0 dBm	-15.00 dB	4	LongFast	2026-03-17 11:39:54	View
Keyhost GW8 (KHS8)	-125.342s Before	-121.0 dBm	-16.75 dB	6	LongFast	2026-03-17 11:40:02	View
pyri8 (pyri)	-124.762s Before	-112.0 dBm	-13.50 dB	6	LongFast	2026-03-17 11:40:02	View
Butyrskaya 868 (But8)	-119.800s Before	-107.0 dBm	-5.00 dB	6	LongFast	2026-03-17 11:40:07	View
Butyrskaya 868 (But8)	-119.563s Before	-107.0 dBm	-5.00 dB	7	LongFast	2026-03-17 11:40:07	View
SYSXX YGW8 (SXY8)	-95.279s Before	-84.0 dBm	4.50 dB	7	LongFast	2026-03-17 11:40:32	View
SYSXX BGW8 (SXB8)	-95.272s Before	-100.0 dBm	4.25 dB	7	LongFast	2026-03-17 11:40:32	View
RN3ABX Georgy 2 (ABX2)	-94.992s Before	-126.0 dBm	-16.75 dB	7	LongFast	2026-03-17 11:40:32	View
Aster-02 (AST2)	+1964.558s After	-93.0 dBm	-9.00 dB	6	LongFast	2026-03-17 12:14:52	View
SYSXX BGW8 (SXB8)	+1964.568s After	-125.0 dBm	-15.75 dB	6	LongFast	2026-03-17 12:14:52	View
ZA_MKAD_22_868_1 (8681)	+1964.914s After	-139.0 dBm	-16.00 dB	6	LongFast	2026-03-17 12:14:52	View
SYSXX OGW8 (SXG8)	+1995.775s After	-53.0 dBm	6.25 dB	7	LongFast	2026-03-17 12:15:23	View
Zoͦmͫвⷡiͥeͤ [GW8] (🧟)	+2215.719s After	-105.0 dBm	-16.25 dB	7	LongFast	2026-03-17 12:19:03	View

20

Total Receptions

16

Unique Gateways