Packet #2139889

Packet Information

Database ID:	2139889
Mesh Packet ID:	`0x4c65955a` Used for correlation across gateways
Timestamp:	2025-11-15 15:38:42 UTC
From Node:	dkTowerBot (dkTB)
To Node:	Meshtastic cb3c (Rock)
Success:	Processed
Protocol:	TEXT_MESSAGE_APP Port: 1

Gateway:	Steiner Studios Tower (SST)
Channel:	LongFast
RSSI:	-116 dBm
SNR:	-8.75 dBm
Hop Info:	0/3 hops Start: 3, Limit: 3
Relay Node:	`fa` dkTB Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Payload Data

Protocol: TEXT_MESSAGE_APP

Size: 27 bytes

Decoded: Yes

Text Content:

@Rock ✋Ack to you! 3 hops

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:	27 bytes
Gateway:	!da5af04c
Channel:	LongFast
Payload Type:	TEXT_MESSAGE_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!da5af04c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (27 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3722183162` Source node ID	uint32
`to`	`1128123196` Target node ID	uint32
`decoded.portnum`	`1` TEXT_MESSAGE_APP	enum
`decoded.payload_length`	`27` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-116.0` dBm Signal strength at gateway	int32
`rx_snr`	`-8.75` dB Signal quality at gateway	float
`rx_time`	`1763221207` 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`	`250` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1763221122.7985475` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!da5af04c`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -116.0 dBm SNR: -8.75 dB

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da5af04c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3722183162, "to": 1128123196, "id": 1281725786, "rx_time": 1763221207, "rx_snr": -8.75, "rx_rssi": -116, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 250, "tx_after": 0, "decoded": { "portnum": 1, "payload": "40526f636b20e29c8b41636b20746f20796f75210a3320686f7073", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "text": "@Rock ✋Ack to you!\n3 hops", "type": "text_message", "portnum": "TEXT_MESSAGE_APP" } } } }

Raw Packet Data (27 bytes)

40526f636b20e29c8b41636b20746f20796f75210a3320686f7073

Hex Analysis:

Size:	27 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
Steiner Studios Tower (SST) Primary	0.000s Reference	-116.0 dBm	-8.75 dB	0	`fa` dkTB	LongFast	2025-11-15 15:38:42 UTC	Current
dkTowerBot (dkTB)	-4.916s Before	Unknown	Unknown	0	`fa` dkTB	LongFast	2025-11-15 15:38:37 UTC	View
bit0fun \| nyme.sh (🟠)	+3.828s After	-111.0 dBm	-15.50 dB	1	`1e` GHFC , 351e	LongFast	2025-11-15 15:38:46 UTC	View
Claudiopolis-440c (440c)	+4.216s After	-101.0 dBm	-13.75 dB	1	`28` b028 , 8b28	LongFast	2025-11-15 15:38:47 UTC	View
K2XAP V4 MS (XAP4)	+7.199s After	-65.0 dBm	-6.00 dB	2	`c9` Penn	LongFast	2025-11-15 15:38:49 UTC	View
MeshM0xie (M0x)	+7.204s After	-97.0 dBm	-3.25 dB	2	`c9` Penn	LongFast	2025-11-15 15:38:50 UTC	View
!ebb328a2 (28a2)	+7.210s After	-94.0 dBm	-14.50 dB	2	`c9` Penn	LongFast	2025-11-15 15:38:50 UTC	View
ClaremontWx.net (CmWx)	+7.244s After	-80.0 dBm	2.00 dB	2	`c9` Penn	LongFast	2025-11-15 15:38:50 UTC	View
K2XAP / nyme.sh (XAP)	+7.468s After	-118.0 dBm	-7.50 dB	2	`c9` Penn , JLX3	LongFast	2025-11-15 15:38:50 UTC	View
DRP1 Chelsea (DRP1)	+7.480s After	-77.0 dBm	6.00 dB	2	`c9` Penn , JLX3	LongFast	2025-11-15 15:38:50 UTC	View
1 MW 1 West Side \| https://nyme.sh (1MW1)	+7.832s After	-104.0 dBm	-5.75 dB	2	`c9` Penn	LongFast	2025-11-15 15:38:50 UTC	View
aurelia (🧚)	+7.897s After	-109.0 dBm	-2.25 dB	2	`56` JLX6	LongFast	2025-11-15 15:38:50 UTC	View
GSI Portable (GSIP)	+11.470s After	-102.0 dBm	-15.50 dB	2	`94`	LongFast	2025-11-15 15:38:54 UTC	View
JLO6 - Corona Solar (JLO6)	+14.610s After	-106.0 dBm	-9.75 dB	3	`16` JLX1	LongFast	2025-11-15 15:38:57 UTC	View
Meshtastic 631c (631c)	+37.075s After	-107.0 dBm	-16.75 dB	2	`dc`	LongFast	2025-11-15 15:39:19 UTC	View
Gowanus Soda (p1p)	+37.093s After	-95.0 dBm	0.50 dB	2	`dc`	LongFast	2025-11-15 15:39:19 UTC	View

16

Total Receptions

16

Unique Gateways

Packet #2139889 Success