Packet #2727759 Success

POSITION_APP packet from Nicomachus (ncmc) to Meshtastic ETNA (ETNA)

15
Total Receptions
15
Unique Gateways
2
Hop Count
30
Payload Bytes
Packet Information
Database ID: 2727759
Mesh Packet ID: 0x5d645497
Used for correlation across gateways
Timestamp: 2025-11-25 09:21:05 UTC
From Node: Nicomachus (ncmc)
To Node: Meshtastic ETNA (ETNA)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: LORSANGE (LORS)
Channel: LongFast
RSSI: -113 dBm
SNR: -5.25 dBm
Hop Info: 2/4 hops
Start: 4, Limit: 2
Relay Node: c9 Penn
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: 30 bytes
Decoded: Yes
Decoded Data:
Latitude:40.671642°
Longitude:-73.990144°
Altitude:21 m
Satellites:12
Precision:14 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:30 bytes
Gateway:!9c764203
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:2 / 4
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...
Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !9c764203
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (30 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2658555520
Source node ID 		uint32
to 2249414613
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 30 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 -113.0 dBm
Signal strength at gateway 		int32
rx_snr -5.25 dB
Signal quality at gateway 		float
rx_time 1764062567
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 201
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1764062465.8607771
Unix timestamp 		uint32
MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message
Privacy Features:
  • ✓ Direct LoRa transmission (not via MQTT)
  • ✓ Targeted to specific node
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~1500.0m accuracy
Exposure Risks:
  • ⚠ 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: !9c764203
Position Precision: 14 bits (~1500.0m accuracy)
Position precision meters: 1500.0
Signal Metrics: RSSI: -113.0 dBm
SNR: -5.25 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:30 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.6716416, "longitude": -73.990144, "altitude": 21, "sats_in_view": 12, "precision_bits": 14 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!9c764203", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2658555520, "to": 2249414613, "id": 1566856343, "rx_time": 1764062567, "rx_snr": -5.25, "rx_rssi": -113, "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": 201, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00003e18150000e6d31815254b7525692803780080010098010cb8010e", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 406716416, "longitude_i": -739901440, "altitude": 21, "time": 1764062539, "location_source": "LOC_EXTERNAL", "ground_speed": 0, "ground_track": 0, "sats_in_view": 12, "precision_bits": 14, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (30 bytes)
0d00003e18150000e6d31815254b7525692803780080010098010cb8010e
Hex Analysis:
Size:30 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
LORSANGE (LORS) Primary 0.000s
Reference 		-113.0 dBm -5.25 dB 2 c9 Penn LongFast 2025-11-25 09:21:05 UTC Current
ClaremontWx.net (CmWx) -10.240s
Before 		-103.0 dBm -14.50 dB 1 d4 LongFast 2025-11-25 09:20:55 UTC View
Sunset Soda (p8p) -9.940s
Before 		-119.0 dBm -7.50 dB 1 d4 🦮 LongFast 2025-11-25 09:20:55 UTC View
K2XAP / nyme.sh (XAP) -7.734s
Before 		-37.0 dBm 6.75 dB 2 57 CmWx LongFast 2025-11-25 09:20:58 UTC View
Meshtastic 1ca3 (1ca3) -5.666s
Before 		-123.0 dBm -14.75 dB 3 31 a031 LongFast 2025-11-25 09:21:00 UTC View
dkTowerBot (dkTB) -4.875s
Before 		-104.0 dBm -13.75 dB 4 28 b028 LongFast 2025-11-25 09:21:00 UTC View
Fried Fish 1 | nyme.sh (FF1) -4.634s
Before 		-89.0 dBm -0.75 dB 4 b8 🫠 LongFast 2025-11-25 09:21:01 UTC View
Steiner Studios Tower (SST) -0.353s
Before 		-113.0 dBm -9.75 dB 2 c9 Penn , JLX3 LongFast 2025-11-25 09:21:05 UTC View
Smorgasburg | nyme.sh (SMRG) -0.056s
Before 		-105.0 dBm -3.50 dB 2 c9 Penn , JLX3 LongFast 2025-11-25 09:21:05 UTC View
DRP1 Chelsea (DRP1) -0.005s
Before 		-77.0 dBm 5.50 dB 2 c9 Penn , JLX3 LongFast 2025-11-25 09:21:05 UTC View
Cams Rak4631 (CARA) +2.594s
After 		-116.0 dBm -6.75 dB 4 74 ec74 LongFast 2025-11-25 09:21:08 UTC View
nLink-NY-Jamaica1 (NLJ1) +4.469s
After 		-90.0 dBm 3.50 dB 3 88 grns , 2f88 , P3NY LongFast 2025-11-25 09:21:10 UTC View
YMH 2 @ Your Mom’s House (YMH2) +7.155s
After 		-68.0 dBm -5.25 dB 3 90 NLG1 LongFast 2025-11-25 09:21:13 UTC View
YMH 1 @ Your Mom’s House (YMH1) +11.057s
After 		-122.0 dBm -18.00 dB 3 fc LongFast 2025-11-25 09:21:16 UTC View
SunnySolar (Suny) +14.898s
After 		-119.0 dBm -18.00 dB 4 b8 LongFast 2025-11-25 09:21:20 UTC View
15

Total Receptions

15

Unique Gateways