Packet #27812794 Success

NODEINFO_APP packet from LCG1 Ameas (LCG1) to !ffffffff

17
Total Receptions
17
Unique Gateways
4
Hop Count
76
Payload Bytes
Packet Information
Database ID: 27812794
Mesh Packet ID: 0x00127f9c
Used for correlation across gateways
Timestamp: 2025-12-15 12:02:39 UTC
From Node: LCG1 Ameas (LCG1)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: PXT_Home (PXT1)
Channel: MediumFast
RSSI: -95 dBm
SNR: 4.75 dBm
Hop Info: 4/4 hops
Start: 4, Limit: 0
Relay Node: fd BAS2
Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions
Payload Data
Protocol: NODEINFO_APP
Size: 76 bytes
Decoded: Yes
Decoded Data:
Long Name:LCG1 Ameas
Short Name:LCG1
Node ID:!ba6a5ce8
MAC Address:ECC6alzo
Hardware:HELTEC_V3
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:76 bytes
Gateway:!849b5278
Channel:MediumFast
Payload Type:NODEINFO_APP
Hop Count:4 / 4
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !849b5278
Node ID format
channel_id MediumFast
packet MeshPacket (76 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3127532776
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 76 bytes size
hop_limit Not set uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 4
Calculated: hop_start - hop_limit 		derived
rx_rssi -95.0 dBm
Signal strength at gateway 		int32
rx_snr 4.75 dB
Signal quality at gateway 		float
rx_time 1765800159
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 253
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765800159.9313836
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)
  • ✓ Custom channel: MediumFast
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (4 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !849b5278
Signal Metrics: RSSI: -95.0 dBm
SNR: 4.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:76 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!ba6a5ce8", "long_name": "LCG1 Ameas ", "short_name": "LCG1", "macaddr": "ECC6alzo", "hw_model": "HELTEC_V3" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!849b5278", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3127532776, "to": 4294967295, "id": 1212316, "rx_time": 1765800159, "rx_snr": 4.75, "rx_rssi": -95, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 253, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216261366135636538120b4c43473120416d656173201a044c43473122061020ba6a5ce8282b42204eb872d6ea62c578e7087abcced28842899dd13109ad760d9e6e98495628e17f4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!ba6a5ce8", "long_name": "LCG1 Ameas ", "short_name": "LCG1", "macaddr": "ECC6alzo", "hw_model": "HELTEC_V3", "public_key": "Trhy1upixXjnCHq8ztKIQomd0TEJrXYNnm6YSVYo4X8=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (76 bytes)
0a09216261366135636538120b4c43473120416d656173201a044c43473122061020ba6a5ce8282b42204eb872d6ea62c578e7087abcced28842899dd13109ad760d9e6e98495628e17f4800
Hex Analysis:
Size:76 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
PXT_Home (PXT1) Primary 0.000s
Reference 		-95.0 dBm 4.75 dB 4 fd BAS2 MediumFast 2025-12-15 12:02:39 UTC Current
JPL73B4_Node (JPL4) -2.212s
Before 		Unknown Unknown 2 08 JPL2 MediumFast 2025-12-15 12:02:37 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) -2.190s
Before 		-106.0 dBm -7.25 dB 1 - MediumFast 2025-12-15 12:02:37 UTC View
JPL73B2_Node (JPL2) -2.137s
Before 		-98.0 dBm -13.50 dB 1 - MediumFast 2025-12-15 12:02:37 UTC View
ETH Maverick (ET01) -0.701s
Before 		-107.0 dBm -5.50 dB 3 61 TO1 MediumFast 2025-12-15 12:02:39 UTC View
Meshtastic 26b0 (26b0) -0.543s
Before 		-95.0 dBm 3.00 dB 3 fc Anu2 MediumFast 2025-12-15 12:02:39 UTC View
Eagle’s Nest (EAGL) -0.289s
Before 		-96.0 dBm 9.00 dB 4 03 SMR5 MediumFast 2025-12-15 12:02:39 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) -0.088s
Before 		-81.0 dBm -10.75 dB 4 b0 Vbm , 26b0 MediumFast 2025-12-15 12:02:39 UTC View
Varela Bot 🏡🤖 (🤖) -0.003s
Before 		-75.0 dBm 9.00 dB 2 1c 🏡 MediumFast 2025-12-15 12:02:39 UTC View
Fenix (FENX) +0.156s
After 		-117.0 dBm -12.75 dB 3 61 TO1 MediumFast 2025-12-15 12:02:40 UTC View
Karabanchel_Baldur (KarB) +0.471s
After 		-98.0 dBm -3.00 dB 2 2d SkyB MediumFast 2025-12-15 12:02:40 UTC View
Meshtastic b2b4📡🌐 (b2b4) +0.474s
After 		-108.0 dBm -4.75 dB 2 2d SkyB MediumFast 2025-12-15 12:02:40 UTC View
ETH Goose (ET03) +0.596s
After 		-30.0 dBm 10.75 dB 4 41 ET01 MediumFast 2025-12-15 12:02:40 UTC View
tizon (Sylv) +0.790s
After 		-107.0 dBm 0.50 dB 2 2d SkyB MediumFast 2025-12-15 12:02:40 UTC View
Getafe ☀️ (GTF) +0.843s
After 		-121.0 dBm -11.00 dB 2 2d SkyB MediumFast 2025-12-15 12:02:40 UTC View
Ocumare Norte🗼🌐 (RRN) +1.735s
After 		-73.0 dBm 10.50 dB 4 96 TCLS MediumFast 2025-12-15 12:02:41 UTC View
srs-h3 📡🌐 (srs0) +2.334s
After 		-121.0 dBm -14.00 dB 3 bb 03bb MediumFast 2025-12-15 12:02:42 UTC View
17

Total Receptions

17

Unique Gateways