Packet #1982353 Success

POSITION_APP packet from Meshtastic b808 (b808) to !ffffffff

12
Total Receptions
12
Unique Gateways
1
Hop Count
17
Payload Bytes
Packet Information
Database ID: 1982353
Mesh Packet ID: 0xfcd4e5ef
Used for correlation across gateways
Timestamp: 2025-11-13 00:26:34 UTC
From Node: Meshtastic b808 (b808)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Lv4 - Heltec V4 Green (Lv4)
Channel: LongFast
RSSI: -89 dBm
SNR: -19.25 dBm
Hop Info: 1/7 hops
Start: 7, Limit: 6
Relay Node: d5 ETNA , 🟠
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: 17 bytes
Decoded: Yes
Decoded Data:
Latitude:40.763392°
Longitude:-73.793536°
Altitude:26 m
Precision:13 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:17 bytes
Gateway:!b2a78ce0
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:1 / 7
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 !b2a78ce0
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (17 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3679565832
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 17 bytes size
hop_limit 6
Remaining hops allowed 		uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 1
Calculated: hop_start - hop_limit 		derived
rx_rssi -89.0 dBm
Signal strength at gateway 		int32
rx_snr -19.25 dB
Signal quality at gateway 		float
rx_time 1762993672
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 213
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1762993594.7439175
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: ~2900.0m accuracy
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (1 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !b2a78ce0
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -89.0 dBm
SNR: -19.25 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:17 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.763392, "longitude": -73.793536, "altitude": 26, "sats_in_view": null, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!b2a78ce0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3679565832, "to": 4294967295, "id": 4241810927, "rx_time": 1762993672, "rx_snr": -19.25, "rx_rssi": -89, "hop_limit": 6, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 213, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00004c1815000004d4181a2803b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407633920, "longitude_i": -737935360, "altitude": 26, "location_source": "LOC_EXTERNAL", "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (17 bytes)
0d00004c1815000004d4181a2803b8010d
Hex Analysis:
Size:17 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
Lv4 - Heltec V4 Green (Lv4) Primary 0.000s
Reference 		-89.0 dBm -19.25 dB 1 d5 ETNA , 🟠 LongFast 2025-11-13 00:26:34 UTC Current
ClaremontWx.net (CmWx) +0.265s
After 		-79.0 dBm 5.00 dB 2 c9 Penn LongFast 2025-11-13 00:26:35 UTC View
aurelia (🧚) +0.436s
After 		-114.0 dBm -8.25 dB 1 d5 ETNA LongFast 2025-11-13 00:26:35 UTC View
DRP1 Chelsea (DRP1) +0.633s
After 		-77.0 dBm 5.50 dB 2 c9 Penn , JLX3 LongFast 2025-11-13 00:26:35 UTC View
K2XAP / nyme.sh (XAP) +0.738s
After 		-128.0 dBm -20.25 dB 2 c9 Penn , JLX3 LongFast 2025-11-13 00:26:35 UTC View
1 MW 1 West Side | https://nyme.sh (1MW1) +0.989s
After 		-98.0 dBm 0.25 dB 2 c9 Penn LongFast 2025-11-13 00:26:35 UTC View
YMH 2 @ Your Mom’s House (YMH2) +1.795s
After 		-58.0 dBm -0.25 dB 3 90 NLG1 LongFast 2025-11-13 00:26:36 UTC View
K2YYD MQTT Gateway 0b0b (MBMQ) +2.415s
After 		-55.0 dBm 5.00 dB 3 9c 599c , 0a9c LongFast 2025-11-13 00:26:37 UTC View
Gowanus Soda (p1p) +6.256s
After 		-125.0 dBm -19.25 dB 2 60 LongFast 2025-11-13 00:26:40 UTC View
Meshtastic 631c (631c) +6.290s
After 		-110.0 dBm -19.25 dB 2 60 LongFast 2025-11-13 00:26:41 UTC View
🐎📨 mobile (📨) +6.406s
After 		-119.0 dBm -9.25 dB 2 60 p@bp LongFast 2025-11-13 00:26:41 UTC View
Cams Rak4631 (CARA) +7.794s
After 		-115.0 dBm -5.25 dB 6 74 ec74 LongFast 2025-11-13 00:26:42 UTC View
12

Total Receptions

12

Unique Gateways