Packet #2513659

Packet Information

Database ID:	2513659
Mesh Packet ID:	`0xab878a51` Used for correlation across gateways
Timestamp:	2025-11-21 01:28:07 UTC
From Node:	Nicomachus (ncmc)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TEXT_MESSAGE_APP Port: 1

Gateway:	Meshtastic 631c (631c)
Channel:	LongFast
RSSI:	-107 dBm
SNR:	-16.25 dBm
Hop Info:	1/7 hops Start: 7, Limit: 6
Relay Node:	None

Payload Data

Protocol: TEXT_MESSAGE_APP

Size: 4 bytes

Decoded: Yes

Text Content:

👋

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:	4 bytes
Gateway:	!db51631c
Channel:	LongFast
Payload Type:	TEXT_MESSAGE_APP
Hop Count:	1 / 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
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db51631c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (4 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2658555520` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`1` TEXT_MESSAGE_APP	enum
`decoded.payload_length`	`4` bytes	size
`hop_limit`	`6` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-107.0` dBm Signal strength at gateway	int32
`rx_snr`	`-16.25` dB Signal quality at gateway	float
`rx_time`	`1763688582` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1763688487.081897` 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
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db51631c`
Signal Metrics:	RSSI: -107.0 dBm SNR: -16.25 dB

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db51631c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2658555520, "to": 4294967295, "id": 2877786705, "rx_time": 1763688582, "rx_snr": -16.25, "rx_rssi": -107, "hop_limit": 6, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 1, "payload": "f09f918b", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "text": "👋", "type": "text_message", "portnum": "TEXT_MESSAGE_APP" } } } }

Raw Packet Data (4 bytes)

f09f918b

Hex Analysis:

Size:	4 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 631c (631c) Primary	0.000s Reference	-107.0 dBm	-16.25 dB	1	-	LongFast	2025-11-21 01:28:07 UTC	Current
Claudiopolis-440c (440c)	-4.475s Before	-88.0 dBm	-6.50 dB	1	`c4` 📨 , R01	LongFast	2025-11-21 01:28:02 UTC	View
ClaremontWx.net (CmWx)	-1.992s Before	-99.0 dBm	-13.00 dB	2	`0c` MG , 440c	LongFast	2025-11-21 01:28:05 UTC	View
dkTowerBot (dkTB)	-0.160s Before	-105.0 dBm	-17.75 dB	2	`e9` pab	LongFast	2025-11-21 01:28:06 UTC	View
Gowanus Soda (p1p)	-0.017s Before	-109.0 dBm	-6.50 dB	1	-	LongFast	2025-11-21 01:28:07 UTC	View
Poncho@pft_ (pft_)	+0.113s After	-109.0 dBm	-5.25 dB	2	`e9` pab	LongFast	2025-11-21 01:28:07 UTC	View
DRP1 Chelsea (DRP1)	+0.250s After	-106.0 dBm	-4.50 dB	2	`e9` pab , dmbl	LongFast	2025-11-21 01:28:07 UTC	View
Steiner Studios Tower (SST)	+0.759s After	-113.0 dBm	-7.00 dB	3	`c9` Penn , JLX3	LongFast	2025-11-21 01:28:07 UTC	View
1 MW 1 West Side \| https://nyme.sh (1MW1)	+0.853s After	-115.0 dBm	-10.00 dB	2	`e9` pab , 📶	LongFast	2025-11-21 01:28:07 UTC	View
K2XAP V4 MS (XAP4)	+0.903s After	-66.0 dBm	2.25 dB	3	`c9` Penn	LongFast	2025-11-21 01:28:07 UTC	View
K2XAP / nyme.sh (XAP)	+1.250s After	-124.0 dBm	-12.00 dB	3	`c9` Penn , JLX3	LongFast	2025-11-21 01:28:08 UTC	View
KD2-1 (KD21)	+1.290s After	-107.0 dBm	-2.25 dB	3	`c9`	LongFast	2025-11-21 01:28:08 UTC	View
Fried Fish 1 \| nyme.sh (FF1)	+2.522s After	-104.0 dBm	-14.00 dB	4	-	LongFast	2025-11-21 01:28:09 UTC	View
MeshM0xie (M0x)	+3.326s After	-103.0 dBm	-9.50 dB	4	`16` JLX1	LongFast	2025-11-21 01:28:10 UTC	View
Sunset Soda (p8p)	+3.336s After	-126.0 dBm	-14.25 dB	3	`57` CmWx	LongFast	2025-11-21 01:28:10 UTC	View
bit0fun \| nyme.sh (🟠)	+3.356s After	-90.0 dBm	8.25 dB	4	`31` a031 , ν	LongFast	2025-11-21 01:28:10 UTC	View
Sour Lime Base 0 (SLB0)	+5.238s After	-22.0 dBm	6.25 dB	4	`c8`	LongFast	2025-11-21 01:28:12 UTC	View
YMH 1 @ Your Mom’s House (YMH1)	+6.993s After	-111.0 dBm	-4.25 dB	7	`56` JLX6	LongFast	2025-11-21 01:28:14 UTC	View
DRP0 Astoria (DRP0)	+9.855s After	-54.0 dBm	6.50 dB	7	`ac` JJ00 , swam , 🌀 , A3WS , FF1 , 🌃 , 09ac , feac , 98ac	LongFast	2025-11-21 01:28:16 UTC	View
YMH 2 @ Your Mom’s House (YMH2)	+15.227s After	-64.0 dBm	0.25 dB	4	`90` NLG1	LongFast	2025-11-21 01:28:22 UTC	View
denvermullets (dmlt)	+115.973s After	-97.0 dBm	-3.75 dB	3	`c9` Penn , JLX3	LongFast	2025-11-21 01:30:03 UTC	View

21

Total Receptions

21

Unique Gateways

Packet #2513659 Success