Packet #3376352 Success

POSITION_APP packet from Psst!-05 Elecrow ThinkNode-M1 (968b) to !ffffffff

18
Total Receptions
18
Unique Gateways
3
Hop Count
27
Payload Bytes
Packet Information
Database ID: 3376352
Mesh Packet ID: 0xef4b5787
Used for correlation across gateways
Timestamp: 2025-12-10 16:55:21 UTC
From Node: Psst!-05 Elecrow ThinkNode-M1 (968b)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Meshtastic e41a (GRBT)
Channel: LongFast
RSSI: -61 dBm
SNR: 6.5 dBm
Hop Info: 3/5 hops
Start: 5, Limit: 2
Relay Node: 04 e404 , e104 , 🦏 , CHTG
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:40.756838°
Longitude:-73.891840°
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:27 bytes
Gateway:!7089e41a
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:3 / 5
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 !7089e41a
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 845059723
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 2
Remaining hops allowed 		uint32
hop_start 5
Initial hop limit 		uint32
hops_taken 3
Calculated: hop_start - hop_limit 		derived
rx_rssi -61.0 dBm
Signal strength at gateway 		int32
rx_snr 6.50 dB
Signal quality at gateway 		float
rx_time 1765385856
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 4
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765385721.0477073
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:
  • ⚠ Visible to all nodes on channel
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !7089e41a
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -61.0 dBm
SNR: 6.50 dB
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": 40.7568384, "longitude": -73.89184, "altitude": 0, "sats_in_view": null, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!7089e41a", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 845059723, "to": 4294967295, "id": 4014692231, "rx_time": 1765385856, "rx_snr": 6.5, "rx_rssi": -61, "hop_limit": 2, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 4, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00004b18150000f5d31800257fa6396928017800800100b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407568384, "longitude_i": -738918400, "altitude": 0, "time": 1765385855, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (27 bytes)
0d00004b18150000f5d31800257fa6396928017800800100b8010f
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
Meshtastic e41a (GRBT) Primary 0.000s
Reference 		-61.0 dBm 6.50 dB 3 04 e404 , e104 , 🦏 , CHTG LongFast 2025-12-10 16:55:21 UTC Current
25 Washington Ave (25WA) -5.042s
Before 		-72.0 dBm -2.50 dB 2 c9 Penn LongFast 2025-12-10 16:55:16 UTC View
Steiner Studios Tower (SST) -5.036s
Before 		-113.0 dBm -5.50 dB 2 c9 Penn , JLX3 LongFast 2025-12-10 16:55:16 UTC View
ClaremontWx.net (CmWx) -5.023s
Before 		-83.0 dBm 4.00 dB 2 c9 Penn , JLX3 LongFast 2025-12-10 16:55:16 UTC View
drp mobile (drpm) -4.863s
Before 		-121.0 dBm -14.00 dB 2 c9 Penn LongFast 2025-12-10 16:55:16 UTC View
Sunset Soda (p8p) -4.688s
Before 		-128.0 dBm -19.75 dB 2 c9 Penn LongFast 2025-12-10 16:55:16 UTC View
🚢 | tugboat v4 (🚢) -4.670s
Before 		-106.0 dBm -16.25 dB 2 c9 Penn LongFast 2025-12-10 16:55:16 UTC View
JOS1tastic 1497 (JOS1) -4.639s
Before 		-106.0 dBm -8.75 dB 2 c9 LongFast 2025-12-10 16:55:16 UTC View
Morton Williams - seano@masto.nyc (mwb) -4.542s
Before 		-89.0 dBm -4.75 dB 2 c9 Penn LongFast 2025-12-10 16:55:16 UTC View
Gemini (GMNI) -4.365s
Before 		-123.0 dBm -12.25 dB 2 c9 Penn LongFast 2025-12-10 16:55:16 UTC View
Meshtastic 631c (GRBH) -3.172s
Before 		-106.0 dBm -16.25 dB 3 10 WA2J , 8a10 LongFast 2025-12-10 16:55:17 UTC View
JLO (fe6e) -2.564s
Before 		-111.0 dBm -7.00 dB 2 c9 Penn , JLX3 LongFast 2025-12-10 16:55:18 UTC View
Mobile Fish 4 (MF4) +0.342s
After 		-112.0 dBm -8.75 dB 4 b8 LongFast 2025-12-10 16:55:21 UTC View
dkTowerBot (dkTB) +0.648s
After 		-99.0 dBm -9.00 dB 2 4c JLY3 , SST LongFast 2025-12-10 16:55:21 UTC View
Meshtastic fda8 (fda8) +8.319s
After 		-81.0 dBm -15.50 dB 4 7b 4b7b LongFast 2025-12-10 16:55:29 UTC View
Claudiopolis-440c (440c) +11.668s
After 		-88.0 dBm -4.75 dB 2 c9 Penn , JLX3 LongFast 2025-12-10 16:55:32 UTC View
JLO - Queens Weather (QnzW) +16.978s
After 		-87.0 dBm 5.25 dB 5 35 JLX5 LongFast 2025-12-10 16:55:38 UTC View
K2YYD MQTT Gateway 0b0b (MBMQ) +56.134s
After 		-26.0 dBm 7.00 dB 5 9c 599c , 0a9c LongFast 2025-12-10 16:56:17 UTC View
18

Total Receptions

18

Unique Gateways