Packet #3441180 Success

POSITION_APP packet from Meshtastic 631c (GRBH) to !ffffffff

18
Total Receptions
18
Unique Gateways
5
Hop Count
28
Payload Bytes
Packet Information
Database ID: 3441180
Mesh Packet ID: 0xa4fa4be6
Used for correlation across gateways
Timestamp: 2025-12-11 18:14:16 UTC
From Node: Meshtastic 631c (GRBH)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Mobile Fish 4 (MF4)
Channel: LongFast
RSSI: -112 dBm
SNR: -9.75 dBm
Hop Info: 5/7 hops
Start: 7, Limit: 2
Relay Node: 40
Last byte of the last hop that relayed this packet
Payload Data
Protocol: POSITION_APP
Size: 28 bytes
Decoded: Yes
Decoded Data:
Latitude:40.710963°
Longitude:-74.003251°
Altitude:300 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:28 bytes
Gateway:!27cb0bcc
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:5 / 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 !27cb0bcc
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (28 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3679544092
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 7
Initial hop limit 		uint32
hops_taken 5
Calculated: hop_start - hop_limit 		derived
rx_rssi -112.0 dBm
Signal strength at gateway 		int32
rx_snr -9.75 dB
Signal quality at gateway 		float
rx_time 1765476995
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 64
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765476856.1986673
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 (5 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !27cb0bcc
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -112.0 dBm
SNR: -9.75 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": 40.7109632, "longitude": -74.0032512, "altitude": 300, "sats_in_view": null, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!27cb0bcc", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3679544092, "to": 4294967295, "id": 2767866854, "rx_time": 1765476995, "rx_snr": -9.75, "rx_rssi": -112, "hop_limit": 2, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 64, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00004418150000e4d318ac0225740a3b6928017800800100b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407109632, "longitude_i": -740032512, "altitude": 300, "time": 1765476980, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (28 bytes)
0d00004418150000e4d318ac0225740a3b6928017800800100b8010d
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
Mobile Fish 4 (MF4) Primary 0.000s
Reference 		-112.0 dBm -9.75 dB 5 40 LongFast 2025-12-11 18:14:16 UTC Current
Meshtastic 631c (GRBH) -14.835s
Before 		Unknown Unknown 0 1c GRBH LongFast 2025-12-11 18:14:01 UTC View
25 Washington Ave (25WA) -10.164s
Before 		-88.0 dBm -20.25 dB 1 a8 MRC1 , fda8 LongFast 2025-12-11 18:14:06 UTC View
dkTowerBot (dkTB) -10.155s
Before 		-107.0 dBm -19.75 dB 1 a8 24a8 , REX , MRC1 LongFast 2025-12-11 18:14:06 UTC View
ClaremontWx.net (CmWx) -5.941s
Before 		-92.0 dBm -3.50 dB 2 - LongFast 2025-12-11 18:14:10 UTC View
Steiner Studios Tower (SST) -3.326s
Before 		-122.0 dBm -17.50 dB 3 60 🚢 LongFast 2025-12-11 18:14:12 UTC View
YMH 1 @ Your Mom’s House (YMH1) -2.605s
Before 		-111.0 dBm -6.00 dB 3 7b 4b7b LongFast 2025-12-11 18:14:13 UTC View
Morton Williams - seano@masto.nyc (mwb) -2.104s
Before 		-103.0 dBm -13.25 dB 3 7b 4b7b LongFast 2025-12-11 18:14:14 UTC View
K2XAP / nyme.sh (XAP) -1.993s
Before 		-42.0 dBm 5.75 dB 3 57 CmWx LongFast 2025-12-11 18:14:14 UTC View
Sunset Soda (p8p) -1.873s
Before 		-127.0 dBm -18.00 dB 3 57 CmWx LongFast 2025-12-11 18:14:14 UTC View
Gemini (GMNI) -1.760s
Before 		-123.0 dBm -15.50 dB 3 7b 4b7b LongFast 2025-12-11 18:14:14 UTC View
Claudiopolis-440c (440c) -1.486s
Before 		-101.0 dBm -16.25 dB 3 57 CmWx LongFast 2025-12-11 18:14:14 UTC View
1 MW 1 West Side | https://nyme.sh (1MW1) -0.446s
Before 		-102.0 dBm -4.50 dB 4 c9 Penn LongFast 2025-12-11 18:14:15 UTC View
Fried Fish FF1 (FF1) +0.019s
After 		-83.0 dBm 0.25 dB 5 40 BRRN LongFast 2025-12-11 18:14:16 UTC View
nLink-NY-Jamaica1 (NLJ1) +1.341s
After 		-92.0 dBm -2.00 dB 5 dc 9cdc LongFast 2025-12-11 18:14:17 UTC View
Whole Foods Market UES (WFMK) +10.911s
After 		-102.0 dBm -11.00 dB 5 b4 PARK LongFast 2025-12-11 18:14:27 UTC View
DRP0 Astoria (DRP0) +26.941s
After 		-77.0 dBm -4.25 dB 6 b2 😴 , CBZ1 LongFast 2025-12-11 18:14:43 UTC View
MeshM0xie (M0x) +200.068s
After 		-23.0 dBm 6.75 dB 5 8d Mox1 LongFast 2025-12-11 18:17:36 UTC View
18

Total Receptions

18

Unique Gateways