Packet #2871450 Success

NODEINFO_APP packet from Oxygen EA4HKU 🗼☀️ (oxyg) to !ffffffff

13
Total Receptions
13
Unique Gateways
2
Hop Count
87
Payload Bytes
Packet Information
Database ID: 2871450
Mesh Packet ID: 0xdf3caa92
Used for correlation across gateways
Timestamp: 2025-07-05 07:55:52 UTC
From Node: Oxygen EA4HKU 🗼☀️ (oxyg)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Venturada2🗼🌐☀️ (Vb2)
Channel: LongFast
RSSI: -97 dBm
SNR: 2.25 dBm
Hop Info: 2/4 hops
Start: 4, Limit: 2
Payload Data
Protocol: NODEINFO_APP
Size: 87 bytes
Decoded: Yes
Decoded Data:
Long Name:Oxygen EA4HKU 🗼☀️
Short Name:oxyg
Node ID:!a0cb6198
MAC Address:MO2gy2GY
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:87 bytes
Gateway:!a03526b0
Channel:LongFast
Payload Type:NODEINFO_APP
Hop Count:2 / 4
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

FieldValue
gateway_id !a03526b0
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (87 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2697683352
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 87 bytes size
hop_limit 2
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -97.0 dBm
Signal strength at gateway 		int32
rx_snr 2.25 dB
Signal quality at gateway 		float
rx_time 1751702151
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 136
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1751702152.6970503
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 (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !a03526b0
Signal Metrics: RSSI: -97.0 dBm
SNR: 2.25 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:87 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!a0cb6198", "long_name": "Oxygen EA4HKU 🗼☀️", "short_name": "oxyg", "macaddr": "MO2gy2GY", "hw_model": "HELTEC_V3" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!a03526b0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697683352, "to": 4294967295, "id": 3745294994, "rx_time": 1751702151, "rx_snr": 2.25, "rx_rssi": -97, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 136, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921613063623631393812184f787967656e20454134484b5520f09f97bce29880efb88f1a046f787967220630eda0cb6198282b422004c2510c54915e8d4e4fe86479ee79e86d60ba129eb470e36308fa0d21f42111", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!a0cb6198", "long_name": "Oxygen EA4HKU 🗼☀️", "short_name": "oxyg", "macaddr": "MO2gy2GY", "hw_model": "HELTEC_V3", "public_key": "BMJRDFSRXo1OT+hkee556G1guhKetHDjYwj6DSH0IRE=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (87 bytes)
0a0921613063623631393812184f787967656e20454134484b5520f09f97bce29880efb88f1a046f787967220630eda0cb6198282b422004c2510c54915e8d4e4fe86479ee79e86d60ba129eb470e36308fa0d21f42111
Hex Analysis:
Size:87 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
Venturada2🗼🌐☀️ (Vb2) Primary 0.000s
Reference 		-97.0 dBm 2.25 dB 2 LongFast 2025-07-05 07:55:52 Current
Wake Up, Neo...📡 (NEO) -11.833s
Before 		-110.0 dBm -16.25 dB 0 LongFast 2025-07-05 07:55:40 View
Aldinra_1640_🗼🌐 (AldB) -11.167s
Before 		-116.0 dBm -6.25 dB 0 LongFast 2025-07-05 07:55:41 View
EA4HDZ MdlS🗼 (AERO) -9.407s
Before 		-121.0 dBm -17.50 dB 1 LongFast 2025-07-05 07:55:43 View
[Nevermore] Perseo 🗼 (nvm1) -8.077s
Before 		-99.0 dBm 0.25 dB 1 LongFast 2025-07-05 07:55:44 View
Hugo 📱🌡️ (HUGO) -5.987s
Before 		-110.0 dBm -8.00 dB 1 LongFast 2025-07-05 07:55:46 View
[TLGO] Base 📡🌐 (TLG0) +0.329s
After 		-118.0 dBm -16.75 dB 2 LongFast 2025-07-05 07:55:53 View
Venturada base🗼🌐 (Vb) +0.964s
After 		-113.0 dBm -8.25 dB 2 LongFast 2025-07-05 07:55:53 View
GRN1-Base📡🌐 (GRN1) +1.581s
After 		-101.0 dBm 2.75 dB 3 LongFast 2025-07-05 07:55:54 View
SkG@Home 🗼🌐 (SkGH) +1.602s
After 		-119.0 dBm -15.50 dB 3 LongFast 2025-07-05 07:55:54 View
Meshtastic c498📡🌐 (C498) +2.033s
After 		-126.0 dBm -18.00 dB 3 LongFast 2025-07-05 07:55:54 View
Villalbilla02 (VBV2) +3.200s
After 		-112.0 dBm -3.75 dB 2 LongFast 2025-07-05 07:55:55 View
Vito 📟📡 (VTO) +4961.047s
After 		-117.0 dBm -14.00 dB 1 LongFast 2025-07-05 09:18:33 View
13

Total Receptions

13

Unique Gateways