Packet #39624668 Success

POSITION_APP packet from dcn1 medfast (dcmf) to !ffffffff

45
Total Receptions
1
Unique Gateways
0
Hop Count
37
Payload Bytes
Packet Information
Database ID: 39624668
Mesh Packet ID: 0xfe5974ff
Used for correlation across gateways
Timestamp: 2026-05-16 14:57:23 UTC
From Node: dcn1 medfast (dcmf)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: DCmesh (mshd)
Channel: LongFast
RSSI: -32 dBm
SNR: 11.75 dBm
Hop Info: 0/3 hops
Start: 3, Limit: 3
Relay Node: e5 dcmf
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:55.767859°
Longitude:-120.242176°
Altitude:662 m
Satellites:9
Precision:16 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:!da627be0
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:Unknown / 3
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...
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 !da627be0
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 1474778853
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 3
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi -32.0 dBm
Signal strength at gateway 		int32
rx_snr 11.75 dB
Signal quality at gateway 		float
rx_time 1778943439
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 229
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1778943443.2779398
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
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Full GPS precision shared
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !da627be0
Position Precision: 16 bits (~364.0m accuracy)
Position precision meters: 364.0
Zero Hop Policy: Enabled
Direct gateway connection
Signal Metrics: RSSI: -32.0 dBm
SNR: 11.75 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": 55.7678592, "longitude": -120.242176, "altitude": 662, "sats_in_view": 9, "precision_bits": 16 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!da627be0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1474778853, "to": 4294967295, "id": 4267275519, "rx_time": 1778943439, "rx_snr": 11.75, "rx_rssi": -32, "hop_limit": 3, "hop_start": 3, "via_mqtt": false, "want_ack": false, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": false, "next_hop": 0, "relay_node": 229, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00803d2115008054b818960525dc85086a28025884017801800198989902980109b80110", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 557678592, "longitude_i": -1202421760, "altitude": 662, "time": 1778943452, "location_source": "LOC_INTERNAL", "PDOP": 132, "ground_speed": 1, "ground_track": 4607000, "sats_in_view": 9, "precision_bits": 16, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (37 bytes)
0d00803d2115008054b818960525dc85086a28025884017801800198989902980109b80110
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
DCmesh (mshd) Primary 0.000s
Reference 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC Current
DCmesh (mshd) -0.752s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:22 UTC View
DCmesh (mshd) -0.444s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:22 UTC View
DCmesh (mshd) -0.432s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:22 UTC View
DCmesh (mshd) -0.418s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:22 UTC View
DCmesh (mshd) -0.020s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.013s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.025s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.038s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.060s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.073s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.085s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.097s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.113s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.124s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.136s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.521s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.540s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.553s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.567s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.580s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.593s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.608s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.620s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.647s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.662s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.677s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.692s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.706s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.726s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.741s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.754s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.772s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.786s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.813s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.833s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.844s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.855s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.867s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.878s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.892s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.903s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.914s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.931s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.944s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:24 UTC View
45

Total Receptions

1

Unique Gateways