Packet #30172129 Success

POSITION_APP packet from Meshtastic c7b6 (c7b6) to !ffffffff

23
Total Receptions
23
Unique Gateways
3
Hop Count
37
Payload Bytes
Packet Information
Database ID: 30172129
Mesh Packet ID: 0x511d2936
Used for correlation across gateways
Timestamp: 2025-12-25 22:42:02 UTC
From Node: Meshtastic c7b6 (c7b6)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Meshtastic 1760 (1760)
Channel: MediumFast
RSSI: -119 dBm
SNR: -2.5 dBm
Hop Info: 3/5 hops
Start: 5, Limit: 2
Relay Node: 40 AldB
Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions
Payload Data
Protocol: POSITION_APP
Size: 37 bytes
Decoded: Yes
Decoded Data:
Latitude:40.710963°
Longitude:-3.905946°
Altitude:930 m
Satellites:6
Precision:13 bits
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:!c0c31760
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:3 / 5
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 2 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 !c0c31760
Node ID format
channel_id MediumFast
packet MeshPacket (37 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 4063414198
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 2
Remaining hops allowed 		uint32
hop_start 5
Initial hop limit 		uint32
hops_taken 3
Calculated: hop_start - hop_limit 		derived
rx_rssi -119.0 dBm
Signal strength at gateway 		int32
rx_snr -2.50 dB
Signal quality at gateway 		float
rx_time 1766702521
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 1766702522.704508
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
  • ✓ Reduced position precision: ~2900.0m accuracy
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !c0c31760
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -119.0 dBm
SNR: -2.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:37 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.7109632, "longitude": -3.9059456, "altitude": 930, "sats_in_view": 6, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!c0c31760", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4063414198, "to": 4294967295, "id": 1360865590, "rx_time": 1766702521, "rx_snr": -2.5, "rx_rssi": -119, "hop_limit": 2, "hop_start": 5, "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": "0d00004418150000acfd18a20725c0bd4d69280258890478018001e8b2aa09980106b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407109632, "longitude_i": -39059456, "altitude": 930, "time": 1766702528, "location_source": "LOC_INTERNAL", "PDOP": 521, "ground_speed": 1, "ground_track": 19569000, "sats_in_view": 6, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (37 bytes)
0d00004418150000acfd18a20725c0bd4d69280258890478018001e8b2aa09980106b8010d
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 Relay Channel Timestamp Actions
Meshtastic 1760 (1760) Primary 0.000s
Reference 		-119.0 dBm -2.50 dB 3 40 AldB MediumFast 2025-12-25 22:42:02 UTC Current
[samsepi0l] 📡🌐 (tlg0) -1.904s
Before 		-95.0 dBm -0.75 dB 1 - MediumFast 2025-12-25 22:42:00 UTC View
Wake Up, Neo...📡 (NEO) -1.285s
Before 		-100.0 dBm -5.50 dB 2 f5 RPT4 MediumFast 2025-12-25 22:42:01 UTC View
Venturada2 🗼🌞 (Vb2) -1.283s
Before 		-99.0 dBm -1.50 dB 2 f5 RPT4 MediumFast 2025-12-25 22:42:01 UTC View
g1bal (g1b0) -1.276s
Before 		-106.0 dBm -1.00 dB 2 f5 RPT4 MediumFast 2025-12-25 22:42:01 UTC View
Karabanchel_Baldur (KarB) -0.763s
Before 		-96.0 dBm -2.25 dB 2 1c 1f1c , 🐷 MediumFast 2025-12-25 22:42:01 UTC View
Meshtastic b2b4📡🌐 (b2b4) -0.749s
Before 		-113.0 dBm -13.50 dB 2 2d SkyB MediumFast 2025-12-25 22:42:01 UTC View
Rodashtastic🗼🌐 (RDSt) -0.643s
Before 		-115.0 dBm -11.50 dB 2 e8 GRN1 MediumFast 2025-12-25 22:42:02 UTC View
Ocumare Norte🗼🌐 (RRN) -0.604s
Before 		-103.0 dBm -10.00 dB 3 b0 Sir , Vb2 MediumFast 2025-12-25 22:42:02 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) -0.572s
Before 		-105.0 dBm -6.50 dB 1 - MediumFast 2025-12-25 22:42:02 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) -0.536s
Before 		-81.0 dBm 5.50 dB 3 b0 Sir , Vb2 MediumFast 2025-12-25 22:42:02 UTC View
Skynet (Sky) -0.475s
Before 		-43.0 dBm 11.25 dB 2 2d SkyB MediumFast 2025-12-25 22:42:02 UTC View
🤖 Nicolas Cage 🌐 (Cage) -0.466s
Before 		-67.0 dBm 10.75 dB 2 2d SkyB MediumFast 2025-12-25 22:42:02 UTC View
tizon (Sylv) -0.434s
Before 		-105.0 dBm 3.75 dB 2 1c 🐷 MediumFast 2025-12-25 22:42:02 UTC View
Meshtastic 18a4 (18a4) -0.026s
Before 		-109.0 dBm -5.00 dB 3 40 AldB MediumFast 2025-12-25 22:42:02 UTC View
Quass001 ☄️ (Q001) +0.240s
After 		-39.0 dBm 11.25 dB 3 3a Q005 MediumFast 2025-12-25 22:42:02 UTC View
Varela Bot 🏡🤖 (🤖) +0.473s
After 		-84.0 dBm 6.75 dB 2 1c 🏡 MediumFast 2025-12-25 22:42:03 UTC View
JAGO1_Cañaveral (JAGO) +0.705s
After 		-116.0 dBm -10.50 dB 3 84 📡 MediumFast 2025-12-25 22:42:03 UTC View
Eagle’s Nest (EAGL) +0.910s
After 		-103.0 dBm 3.75 dB 5 48 SMR1 MediumFast 2025-12-25 22:42:03 UTC View
Mec Rocket Meco (MRM) +1.021s
After 		-109.0 dBm -11.25 dB 4 a8 CALB MediumFast 2025-12-25 22:42:03 UTC View
Meshtastic 870c📡🌐 (870c) +1.132s
After 		-96.0 dBm 9.50 dB 4 dc MediumFast 2025-12-25 22:42:03 UTC View
🎄 SkG@Home 📡🌐 (SkGH) +1.480s
After 		-82.0 dBm -12.00 dB 5 56 8d56 , 3d56 MediumFast 2025-12-25 22:42:04 UTC View
Vito 📟📡 (VTO) +227.371s
After 		-118.0 dBm -13.00 dB 4 88 2b88 MediumFast 2025-12-25 22:45:50 UTC View
23

Total Receptions

23

Unique Gateways