Packet #28420517 Success

POSITION_APP packet from ljCR1 QTH = IM88ax77 (lCR1) to !ffffffff

14
Total Receptions
14
Unique Gateways
1
Hop Count
28
Payload Bytes
Packet Information
Database ID: 28420517
Mesh Packet ID: 0x94a01b45
Used for correlation across gateways
Timestamp: 2025-12-18 06:32:08 UTC
From Node: ljCR1 QTH = IM88ax77 (lCR1)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Eagle’s Nest (EAGL)
Channel: MediumFast
RSSI: -123 dBm
SNR: -13.75 dBm
Hop Info: 1/3 hops
Start: 3, Limit: 2
Relay Node: 61 TO1
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: 28 bytes
Decoded: Yes
Decoded Data:
Latitude:38.990643°
Longitude:-3.935437°
Altitude:687 m
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:28 bytes
Gateway:!435bb780
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:1 / 3
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 3 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !435bb780
Node ID format
channel_id MediumFast
packet MeshPacket (28 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3679552872
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 28 bytes size
hop_limit 2
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 1
Calculated: hop_start - hop_limit 		derived
rx_rssi -123.0 dBm
Signal strength at gateway 		int32
rx_snr -13.75 dB
Signal quality at gateway 		float
rx_time 1766039501
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 97
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766039528.6913536
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)
  • ✓ Custom channel: MediumFast
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Full GPS precision shared
  • ⚠ Multi-hop path visible (1 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !435bb780
Position Precision: 16 bits (~364.0m accuracy)
Position precision meters: 364.0
Signal Metrics: RSSI: -123.0 dBm
SNR: -13.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:28 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 38.9906432, "longitude": -3.9354368, "altitude": 687, "sats_in_view": null, "precision_bits": 16 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!435bb780", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3679552872, "to": 4294967295, "id": 2493520709, "rx_time": 1766039501, "rx_snr": -13.75, "rx_rssi": -123, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 97, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00803d17150080a7fd18af0525e69f436928017800800100b80110", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 389906432, "longitude_i": -39354368, "altitude": 687, "time": 1766039526, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 16, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (28 bytes)
0d00803d17150080a7fd18af0525e69f436928017800800100b80110
Hex Analysis:
Size:28 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
Eagle’s Nest (EAGL) Primary 0.000s
Reference 		-123.0 dBm -13.75 dB 1 61 TO1 MediumFast 2025-12-18 06:32:08 UTC Current
Venturada2 🗼🌞 (Vb2) -0.625s
Before 		-106.0 dBm -6.25 dB 1 aa CR1 MediumFast 2025-12-18 06:32:08 UTC View
JAGO1_Cañaveral (JAGO) -0.357s
Before 		-122.0 dBm -12.75 dB 2 b0 Vbm , PUPM , Vb2 MediumFast 2025-12-18 06:32:08 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) -0.281s
Before 		-78.0 dBm 9.00 dB 2 b0 Vbm , Vb2 MediumFast 2025-12-18 06:32:08 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) +0.014s
After 		-100.0 dBm 1.00 dB 2 b0 Vbm , Vb2 MediumFast 2025-12-18 06:32:08 UTC View
Fenix (FENX) +0.322s
After 		-116.0 dBm -9.75 dB 1 61 TO1 MediumFast 2025-12-18 06:32:09 UTC View
Villarejo01 (VIL1) +0.377s
After 		-117.0 dBm -12.50 dB 1 61 TO1 MediumFast 2025-12-18 06:32:09 UTC View
[samsepi0l] 📡🌐 (tlg0) +0.419s
After 		-84.0 dBm -14.00 dB 3 fc 74fc , Anu2 MediumFast 2025-12-18 06:32:09 UTC View
P3 iGate 🏠🌐 (P3N2) +0.481s
After 		-36.0 dBm 10.50 dB 2 25 P3N1 MediumFast 2025-12-18 06:32:09 UTC View
Varela Bot 🏡🤖 (🤖) +0.560s
After 		-82.0 dBm 8.75 dB 3 1c 🏡 MediumFast 2025-12-18 06:32:09 UTC View
Ocumare Norte🗼🌐 (RRN) +0.703s
After 		-102.0 dBm -9.00 dB 3 6a b76a MediumFast 2025-12-18 06:32:09 UTC View
Rodashtastic🗼🌐 (RDSt) +0.839s
After 		-118.0 dBm -8.00 dB 3 e8 GRN1 MediumFast 2025-12-18 06:32:09 UTC View
Quixote_JS8_5🗼🌐 (QXT5) +1.978s
After 		-115.0 dBm -11.50 dB 3 - MediumFast 2025-12-18 06:32:10 UTC View
Quixote_JS8_7 (QXT7) +1.981s
After 		-18.0 dBm 11.25 dB 3 - MediumFast 2025-12-18 06:32:10 UTC View
14

Total Receptions

14

Unique Gateways