Packet #2449859 Success

POSITION_APP packet from Lv4 - Heltec V4 Green (Lv4) to !ffffffff

16
Total Receptions
16
Unique Gateways
2
Hop Count
45
Payload Bytes
Packet Information
Database ID: 2449859
Mesh Packet ID: 0x633d4783
Used for correlation across gateways
Timestamp: 2025-11-20 00:17:15 UTC
From Node: Lv4 - Heltec V4 Green (Lv4)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: CBZ0 🚕 mobile (CBZ0)
Channel: LongFast
RSSI: -116 dBm
SNR: -9.75 dBm
Hop Info: 2/6 hops
Start: 6, Limit: 4
Relay Node: ca ZLLP , JLX4
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: 45 bytes
Decoded: Yes
Decoded Data:
Latitude:40.743731°
Longitude:-73.865626°
Altitude:-7 m
Satellites:4
Precision:15 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:45 bytes
Gateway:!9ee7fa58
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:2 / 6
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...
Exposure Risks:
âš  Visible to all nodes on channel
âš  Default channel - no encryption
+ 3 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !9ee7fa58
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (45 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2997325024
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 45 bytes size
hop_limit 4
Remaining hops allowed 		uint32
hop_start 6
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -116.0 dBm
Signal strength at gateway 		int32
rx_snr -9.75 dB
Signal quality at gateway 		float
rx_time 1763597927
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 202
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1763597835.329762
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
  • ✓ Reduced position precision: ~729.0m accuracy
Exposure Risks:
  • âš  Visible to all nodes on channel
  • âš  Default channel - no encryption
  • âš  Packet visible to MQTT subscribers
  • âš  Multi-hop path visible (2 hops)
  • âš  RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !9ee7fa58
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -116.0 dBm
SNR: -9.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:45 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.7437312, "longitude": -73.8656256, "altitude": -7, "sats_in_view": 4, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!9ee7fa58", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2997325024, "to": 4294967295, "id": 1664960387, "rx_time": 1763597927, "rx_snr": -9.75, "rx_rssi": -116, "hop_limit": 4, "hop_start": 6, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 202, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00004918150000f9d318f9ffffffffffffffff01255f5e1e69280258bc0978008001f0cfcb0d980104b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407437312, "longitude_i": -738656256, "altitude": -7, "time": 1763597919, "location_source": "LOC_INTERNAL", "PDOP": 1212, "ground_speed": 0, "ground_track": 28502000, "sats_in_view": 4, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (45 bytes)
0d00004918150000f9d318f9ffffffffffffffff01255f5e1e69280258bc0978008001f0cfcb0d980104b8010f
Hex Analysis:
Size:45 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
CBZ0 🚕 mobile (CBZ0) Primary 0.000s
Reference 		-116.0 dBm -9.75 dB 2 ca ZLLP , JLX4 LongFast 2025-11-20 00:17:15 UTC Current
MeshM0xie (M0x) -2.980s
Before 		-106.0 dBm -14.00 dB 2 c2 Asra LongFast 2025-11-20 00:17:12 UTC View
Steiner Studios Tower (SST) +1.640s
After 		-118.0 dBm -11.75 dB 3 1e 351e LongFast 2025-11-20 00:17:16 UTC View
Claudiopolis-440c (440c) +2.176s
After 		-107.0 dBm -16.75 dB 3 1e 351e LongFast 2025-11-20 00:17:17 UTC View
DRP1 Chelsea (DRP1) +2.765s
After 		-82.0 dBm 5.75 dB 4 a8 2ea8 , MPH1 , ETNA LongFast 2025-11-20 00:17:18 UTC View
dkTowerBot (dkTB) +3.274s
After 		-101.0 dBm -12.75 dB 4 28 b028 LongFast 2025-11-20 00:17:18 UTC View
K2XAP V4 MS (XAP4) +3.284s
After 		-84.0 dBm -15.00 dB 4 0c XAP2 , MG , 440c LongFast 2025-11-20 00:17:18 UTC View
K2XAP / nyme.sh (XAP) +5.797s
After 		-115.0 dBm -4.75 dB 5 c9 Penn , JLX3 LongFast 2025-11-20 00:17:21 UTC View
NW Bergen (3fc4) +6.030s
After 		-113.0 dBm -15.25 dB 5 c9 Penn LongFast 2025-11-20 00:17:21 UTC View
Fried Fish 1 | nyme.sh (FF1) +7.810s
After 		-100.0 dBm -14.25 dB 6 - LongFast 2025-11-20 00:17:23 UTC View
P0NY Express Solar Node (P0NY) +7.987s
After 		-105.0 dBm 0.50 dB 6 - LongFast 2025-11-20 00:17:23 UTC View
ClaremontWx.net (CmWx) +8.653s
After 		-42.0 dBm 6.50 dB 6 78 LongFast 2025-11-20 00:17:23 UTC View
Poncho@MobileBase (pft@) +9.063s
After 		-49.0 dBm 6.00 dB 6 f2 p@s! LongFast 2025-11-20 00:17:24 UTC View
YMH 2 @ Your Mom’s House (YMH2) +10.657s
After 		-66.0 dBm -0.75 dB 6 90 NLG1 LongFast 2025-11-20 00:17:25 UTC View
DRP0 Astoria (DRP0) +55.231s
After 		-96.0 dBm 2.50 dB 4 b2 😴 , CBZ1 LongFast 2025-11-20 00:18:10 UTC View
drp mobile (drpm) +55.398s
After 		-102.0 dBm 4.25 dB 4 b2 CBZ1 LongFast 2025-11-20 00:18:10 UTC View
16

Total Receptions

16

Unique Gateways