Packet #2562639

Packet Information

Database ID:	2562639
Mesh Packet ID:	`0x2e8001aa` Used for correlation across gateways
Timestamp:	2025-11-21 19:10:21 UTC
From Node:	Wilbur Post @ GCNA (GCNA)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TEXT_MESSAGE_APP Port: 1

Gateway:	Meshtastic e41a (GRBT)
Channel:	LongFast
RSSI:	-87 dBm
SNR:	4.0 dBm
Hop Info:	6/7 hops Start: 7, Limit: 1
Relay Node:	`10` WA2J 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: 2 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:	2 bytes
Gateway:	!7089e41a
Channel:	LongFast
Payload Type:	TEXT_MESSAGE_APP
Hop Count:	6 / 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`	`!7089e41a` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (2 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1770256240` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`1` TEXT_MESSAGE_APP	enum
`decoded.payload_length`	`2` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`6` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-87.0` dBm Signal strength at gateway	int32
`rx_snr`	`4.00` dB Signal quality at gateway	float
`rx_time`	`1763752317` 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`	`16` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1763752221.0385137` 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 (6 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!7089e41a`
Signal Metrics:	RSSI: -87.0 dBm SNR: 4.00 dB

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!7089e41a", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1770256240, "to": 4294967295, "id": 780140970, "rx_time": 1763752317, "rx_snr": 4.0, "rx_rssi": -87, "hop_limit": 1, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 16, "tx_after": 0, "decoded": { "portnum": 1, "payload": "5150", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "text": "QP", "type": "text_message", "portnum": "TEXT_MESSAGE_APP" } } } }

Raw Packet Data (2 bytes)

5150

Hex Analysis:

Size:	2 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 e41a (GRBT) Primary	0.000s Reference	-87.0 dBm	4.00 dB	6	`10` WA2J	LongFast	2025-11-21 19:10:21 UTC	Current
KD2-1 (KD21)	-60.954s Before	-102.0 dBm	-15.75 dB	0	`70` GCNA	LongFast	2025-11-21 19:09:20 UTC	View
K2YYD MQTT Gateway 0b0b (MBMQ)	-13.543s Before	-67.0 dBm	2.00 dB	2	`6c`	LongFast	2025-11-21 19:10:07 UTC	View
Steiner Studios Tower (SST)	-13.500s Before	-125.0 dBm	-17.50 dB	2	`8b` JLX2 , 658b	LongFast	2025-11-21 19:10:07 UTC	View
K2XAP V4 MS (XAP4)	-11.178s Before	-64.0 dBm	Unknown	2	`c9` Penn	LongFast	2025-11-21 19:10:09 UTC	View
ClaremontWx.net (CmWx)	-11.151s Before	-83.0 dBm	4.25 dB	2	`c9` Penn	LongFast	2025-11-21 19:10:09 UTC	View
DRP1 Chelsea (DRP1)	-10.744s Before	-79.0 dBm	5.75 dB	2	`c9` Penn , JLX3	LongFast	2025-11-21 19:10:10 UTC	View
1 MW 1 West Side \| https://nyme.sh (1MW1)	-10.199s Before	-97.0 dBm	3.50 dB	2	`c9` Penn	LongFast	2025-11-21 19:10:10 UTC	View
K2XAP / nyme.sh (XAP)	-10.095s Before	-115.0 dBm	-17.75 dB	2	`c9` Penn , JLX3	LongFast	2025-11-21 19:10:10 UTC	View
dkTowerBot (dkTB)	-9.803s Before	-102.0 dBm	-12.00 dB	3	`28` b028	LongFast	2025-11-21 19:10:11 UTC	View
K2CAT/Home (K2CT)	-9.649s Before	-103.0 dBm	3.50 dB	4	`2f` KCAT	LongFast	2025-11-21 19:10:11 UTC	View
Claudiopolis-440c (440c)	-8.592s Before	-102.0 dBm	-15.00 dB	3	`bc` pppp , SOUR	LongFast	2025-11-21 19:10:12 UTC	View
Gowanus Soda (p1p)	-4.456s Before	-112.0 dBm	-10.25 dB	4	-	LongFast	2025-11-21 19:10:16 UTC	View
Meshtastic 631c (631c)	-4.441s Before	-106.0 dBm	-16.75 dB	4	-	LongFast	2025-11-21 19:10:16 UTC	View
Sunset Soda (p8p)	-3.798s Before	-127.0 dBm	-20.00 dB	2	`57` CmWx	LongFast	2025-11-21 19:10:17 UTC	View
Fried Fish 1 \| nyme.sh (FF1)	+2.105s After	-94.0 dBm	-3.25 dB	4	`0f` 68SD	LongFast	2025-11-21 19:10:23 UTC	View
MeshM0xie (M0x)	+795.794s After	-105.0 dBm	-19.00 dB	2	`b8` JLY4	LongFast	2025-11-21 19:23:36 UTC	View

17

Total Receptions

17

Unique Gateways

Packet #2562639 Success