Packet #39624674 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: 39624674
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 1778943443.3632085
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) -0.837s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:22 UTC View
DCmesh (mshd) -0.529s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:22 UTC View
DCmesh (mshd) -0.517s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:22 UTC View
DCmesh (mshd) -0.503s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:22 UTC View
DCmesh (mshd) -0.105s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) -0.085s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) -0.072s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) -0.060s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) -0.048s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) -0.026s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) -0.012s
Before 		-32.0 dBm 11.75 dB 0 e5 dcmf LongFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.012s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.028s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.039s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.051s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.436s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.455s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.468s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.482s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.495s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.507s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf MediumFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.523s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.535s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.562s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.577s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.592s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.606s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.621s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:23 UTC View
DCmesh (mshd) +0.641s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.655s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.669s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.687s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortFast 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.701s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.727s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.747s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.759s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.770s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.781s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.792s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.806s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.817s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.829s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.846s
After 		-32.0 dBm 11.75 dB 0 e5 dcmf ShortTurbo 2026-05-16 14:57:24 UTC View
DCmesh (mshd) +0.859s
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