Packet #1075551 Success

POSITION_APP packet from CBM1 Watt Node (CBM1) to !ffffffff

5
Total Receptions
5
Unique Gateways
4
Hop Count
27
Payload Bytes
Packet Information
Database ID: 1075551
Mesh Packet ID: 0x8d3cb049
Used for correlation across gateways
Timestamp: 2026-05-30 07:38:59 UTC
From Node: CBM1 Watt Node (CBM1)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: IsenMesh.Base2.PA (ISB2)
Channel: LongFast
RSSI: Unknown
SNR: Unknown
Hop Info: 4/5 hops
Start: 5, Limit: 1
Relay Node: ac ISB3
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: 27 bytes
Decoded: Yes
Decoded Data:
Latitude:39.703347°
Longitude:-75.689165°
Altitude:21 m
Precision:17 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:27 bytes
Gateway:!6985941c
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:4 / 5
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 !6985941c
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (27 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 1232723624
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 27 bytes size
hop_limit 1
Remaining hops allowed 		uint32
hop_start 5
Initial hop limit 		uint32
hops_taken 4
Calculated: hop_start - hop_limit 		derived
rx_rssi Not set int32
rx_snr Not set float
rx_time 1780126706
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack False
No ACK requested 		bool
priority 64
Packet priority level 		enum
delayed Not set enum
channel Not set uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 172
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1780126739.9607773
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
  • ⚠ Full GPS precision shared
  • ⚠ Multi-hop path visible (4 hops)
MQTT-Specific Fields
Gateway ID: !6985941c
Position Precision: 17 bits (~182.0m accuracy)
Position precision meters: 182.0
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:27 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 39.7033472, "longitude": -75.6891648, "altitude": 21, "sats_in_view": null, "precision_bits": 17 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!6985941c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1232723624, "to": 4294967295, "id": 2369564745, "rx_time": 1780126706, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 1, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 64, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 172, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0040aa171500c0e2d2181525ea931a6a28017800800100b80111", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 397033472, "longitude_i": -756891648, "altitude": 21, "time": 1780126698, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 17, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (27 bytes)
0d0040aa171500c0e2d2181525ea931a6a28017800800100b80111
Hex Analysis:
Size:27 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
IsenMesh.Base2.PA (ISB2) Primary 0.000s
Reference 		Unknown Unknown 4 ac ISB3 LongFast 2026-05-30 07:38:59 UTC Current
Bryn Mawr Base (BRYN) -26.353s
Before 		-78.0 dBm 5.50 dB 3 94 2N39 , BM- , NOFI LongFast 2026-05-30 07:38:33 UTC View
Meshtastic 8810 (NtSq) -24.772s
Before 		-108.0 dBm -10.25 dB 3 - LongFast 2026-05-30 07:38:35 UTC View
SG-Command (SG-C) -20.065s
Before 		-115.0 dBm -18.00 dB 5 a4 LongFast 2026-05-30 07:38:39 UTC View
IsenMesh.Base3.PA (ISB3) -0.015s
Before 		-105.0 dBm -8.50 dB 3 a3 HAM1 LongFast 2026-05-30 07:38:59 UTC View
5

Total Receptions

5

Unique Gateways