Packet #13877337 Success

NODEINFO_APP packet from Alnitak 🗼🌞 (Alk) to !ffffffff

19
Total Receptions
19
Unique Gateways
4
Hop Count
80
Payload Bytes
Packet Information
Database ID: 13877337
Mesh Packet ID: 0x8a6ca218
Used for correlation across gateways
Timestamp: 2025-10-06 15:55:34 UTC
From Node: Alnitak 🗼🌞 (Alk)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Meshtastic 870c📡🌐 (870c)
Channel: MediumSlow
RSSI: -94 dBm
SNR: 4.5 dBm
Hop Info: 4/4 hops
Start: 4, Limit: 0
Payload Data
Protocol: NODEINFO_APP
Size: 80 bytes
Decoded: Yes
Decoded Data:
Long Name:Alnitak 🗼🌞
Short Name:Alk
Node ID:!eabf44b4
MAC Address:ydzqv0S0
Hardware:NRF52_PROMICRO_DIY
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:80 bytes
Gateway:!336a870c
Channel:MediumSlow
Payload Type:NODEINFO_APP
Hop Count:4 / 4
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumSlow
+ 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 !336a870c
Node ID format
channel_id MediumSlow
packet MeshPacket (80 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3938403508
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 80 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 -94.0 dBm
Signal strength at gateway 		int32
rx_snr 4.50 dB
Signal quality at gateway 		float
rx_time 1759766132
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 220
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1759766134.4848542
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: MediumSlow
  • ✓ 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: !336a870c
Signal Metrics: RSSI: -94.0 dBm
SNR: 4.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:80 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!eabf44b4", "long_name": "Alnitak 🗼🌞", "short_name": "Alk", "macaddr": "ydzqv0S0", "hw_model": "NRF52_PROMICRO_DIY" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!336a870c", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3938403508, "to": 4294967295, "id": 2322375192, "rx_time": 1759766132, "rx_snr": 4.5, "rx_rssi": -94, "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": 220, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092165616266343462341210416c6e6974616b20f09f97bcf09f8c9e1a03416c6b2206c9dceabf44b4283f42206c6bf9a55127a0e9462b92207ef69b42350c418af6f6a3ff163eef6175e4d87b4801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!eabf44b4", "long_name": "Alnitak 🗼🌞", "short_name": "Alk", "macaddr": "ydzqv0S0", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "bGv5pVEnoOlGK5IgfvabQjUMQYr29qP/Fj7vYXXk2Hs=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (80 bytes)
0a092165616266343462341210416c6e6974616b20f09f97bcf09f8c9e1a03416c6b2206c9dceabf44b4283f42206c6bf9a55127a0e9462b92207ef69b42350c418af6f6a3ff163eef6175e4d87b4801
Hex Analysis:
Size:80 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
Meshtastic 870c📡🌐 (870c) Primary 0.000s
Reference 		-94.0 dBm 4.50 dB 4 MediumSlow 2025-10-06 15:55:34 Current
Venturada2🗼🌐☀️ (Vb2) -4.303s
Before 		-99.0 dBm -14.00 dB 0 MediumSlow 2025-10-06 15:55:30 View
Meshtastic 1760 (1760) -3.381s
Before 		-128.0 dBm -9.75 dB 1 MediumSlow 2025-10-06 15:55:31 View
GRN1-Base🗼🌐 (GRN1) -3.345s
Before 		-91.0 dBm 3.25 dB 1 MediumSlow 2025-10-06 15:55:31 View
Villalbilla02 (VBV2) -3.057s
Before 		-109.0 dBm Unknown 1 MediumSlow 2025-10-06 15:55:31 View
tizon (Sylv) -2.215s
Before 		-102.0 dBm 4.50 dB 2 MediumSlow 2025-10-06 15:55:32 View
Meshtastic 53fc (53fc) -2.113s
Before 		-115.0 dBm -2.50 dB 2 MediumSlow 2025-10-06 15:55:32 View
Rodashtastic🗼🌐 (RDSt) -1.819s
Before 		-115.0 dBm -14.75 dB 2 MediumSlow 2025-10-06 15:55:32 View
Mec Rocket Meco (MRM) -1.318s
Before 		-108.0 dBm -5.25 dB 2 MediumSlow 2025-10-06 15:55:33 View
Meshtastic 18a4 (18a4) -1.036s
Before 		-53.0 dBm 13.50 dB 2 MediumSlow 2025-10-06 15:55:33 View
[TLG] 📡🌐🔋🔌 (tlg0) -0.968s
Before 		-87.0 dBm 8.25 dB 2 MediumSlow 2025-10-06 15:55:33 View
Meshtastic 54a4 Justicia (54a4) -0.384s
Before 		-121.0 dBm -16.25 dB 3 MediumSlow 2025-10-06 15:55:34 View
Zion 🗼 (Zion) +0.201s
After 		-102.0 dBm -9.50 dB 3 MediumSlow 2025-10-06 15:55:34 View
Ocumare_Base_🗼🌐 (CATA) +0.469s
After 		-79.0 dBm 8.25 dB 2 MediumSlow 2025-10-06 15:55:34 View
Baldur Fijo (BalF) +1.434s
After 		-115.0 dBm -9.75 dB 3 MediumSlow 2025-10-06 15:55:35 View
Kenobi23 QTH (5aec) +1.584s
After 		-101.0 dBm -5.50 dB 3 MediumSlow 2025-10-06 15:55:36 View
Oxygen EA4HKU (O) +3.078s
After 		-13.0 dBm 8.25 dB 4 MediumSlow 2025-10-06 15:55:37 View
Carbon EA4HKU (C) +3.317s
After 		-31.0 dBm 7.75 dB 4 MediumSlow 2025-10-06 15:55:37 View
Monolito (MoN) +4.050s
After 		-75.0 dBm 8.00 dB 3 MediumSlow 2025-10-06 15:55:38 View
19

Total Receptions

19

Unique Gateways