Packet #5953755 Failed

POSITION_APP packet from Meshtastic bacc (bacc) to !ffffffff

6
Total Receptions
5
Unique Gateways
7
Hop Count
37
Payload Bytes
Packet Information
Database ID: 5953755
Mesh Packet ID: 0x3decd352
Used for correlation across gateways
Timestamp: 2026-01-14 20:22:11 UTC
From Node: Meshtastic bacc (bacc)
To Node: !ffffffff (ffff)
Success: Failed
Protocol: POSITION_APP
Port: 3
Gateway: SYSXX YGW8 (SXY8)
Channel: LongFast
RSSI: Unknown
SNR: 7.0 dBm
Hop Info: 7/7 hops
Start: 7, Limit: 0
Payload Data
Protocol: POSITION_APP
Size: 37 bytes
Decoded: No
Position decode error: Error parsing message with type 'meshtastic.protobuf.Position'
Text Content:
0d00c050211500c0521618c1022540cd676928025805817802809d8ce4d98091010cb80111
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:37 bytes
Gateway:!efffff02
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:7 / 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

FieldValue
gateway_id !efffff02
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (37 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2261433036
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 37 bytes size
hop_limit Not set uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 7
Calculated: hop_start - hop_limit 		derived
rx_rssi Not set int32
rx_snr 7.00 dB
Signal quality at gateway 		float
rx_time 1768411330
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 64
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1768411331.3541627
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 (7 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !efffff02
Signal Metrics: SNR: 7.00 dB
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!efffff02", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2261433036, "to": 4294967295, "id": 1038930770, "rx_time": 1768411330, "rx_snr": 7.0, "rx_rssi": 0, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 64, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00c050211500c0521618c1022540cd676928025805817802809d8ce4d98091010cb80111", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "raw_bytes": "0d00c050211500c0521618c1022540cd676928025805817802809d8ce4d98091010cb80111", "type": "decode_error", "portnum": "POSITION_APP", "decode_error": "Position decode error: Error parsing message with type 'meshtastic.protobuf.Position'" } } } }
Raw Packet Data (37 bytes)
0d00c050211500c0521618c1022540cd676928025805817802809d8ce4d98091010cb80111
Hex Analysis:
Size:37 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
SYSXX YGW8 (SXY8) Primary 0.000s
Reference 		Unknown 7.00 dB 7 LongFast 2026-01-14 20:22:11 Current
Zamkad8 (zmkd) -8.537s
Before 		-115.0 dBm -6.00 dB 4 LongFast 2026-01-14 20:22:02 View
SYSXX BGW8 (SXB8) -3.449s
Before 		-127.0 dBm -20.00 dB 6 LongFast 2026-01-14 20:22:07 View
SYSXX YGW8 (SXY8) -0.284s
Before 		Unknown 7.00 dB 7 LongFast 2026-01-14 20:22:11 View
SYSXX OGW8 (SXG8) -0.226s
Before 		-68.0 dBm 6.00 dB 7 LongFast 2026-01-14 20:22:11 View
Dragon868-1 (D1) +4.142s
After 		-94.0 dBm 4.00 dB 7 LongFast 2026-01-14 20:22:15 View
6

Total Receptions

5

Unique Gateways