Packet #2820422 Success

POSITION_APP packet from Wilbur Post @ GCNA (GCNA) to Macking Cheems (pnor)

15
Total Receptions
15
Unique Gateways
2
Hop Count
22
Payload Bytes
Packet Information
Database ID: 2820422
Mesh Packet ID: 0x5f0a02b2
Used for correlation across gateways
Timestamp: 2025-11-27 21:49:04 UTC
From Node: Wilbur Post @ GCNA (GCNA)
To Node: Macking Cheems (pnor)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: JOS1tastic 1497 (JOS1)
Channel: LongFast
RSSI: -114 dBm
SNR: -8.5 dBm
Hop Info: 2/4 hops
Start: 4, Limit: 2
Relay Node: 2b
Last byte of the last hop that relayed this packet
Payload Data
Protocol: POSITION_APP
Size: 22 bytes
Decoded: Yes
Decoded Data:
Latitude:40.733305°
Longitude:-73.641805°
Precision:32 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:22 bytes
Gateway:!b8581497
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:2 / 4
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...
Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 3 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !b8581497
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (22 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 1770256240
Source node ID 		uint32
to 2651249884
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 22 bytes size
hop_limit 2
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -114.0 dBm
Signal strength at gateway 		int32
rx_snr -8.50 dB
Signal quality at gateway 		float
rx_time 1764280253
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 43
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1764280144.5037143
Unix timestamp 		uint32
MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message
Privacy Features:
  • ✓ Direct LoRa transmission (not via MQTT)
  • ✓ Targeted to specific node
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Full GPS precision shared
  • ⚠ Multi-hop path visible (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !b8581497
Position Precision: 32 bits (~1.0m accuracy)
Position precision meters: 1.0
Signal Metrics: RSSI: -114.0 dBm
SNR: -8.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:22 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.7333053, "longitude": -73.6418049, "altitude": 0, "sats_in_view": null, "precision_bits": 32 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!b8581497", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1770256240, "to": 2651249884, "id": 1594491570, "rx_time": 1764280253, "rx_snr": -8.5, "rx_rssi": -114, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 43, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0dbd68471815ff261bd4180028017800800100b80120", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407333053, "longitude_i": -736418049, "altitude": 0, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 32, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (22 bytes)
0dbd68471815ff261bd4180028017800800100b80120
Hex Analysis:
Size:22 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
JOS1tastic 1497 (JOS1) Primary 0.000s
Reference 		-114.0 dBm -8.50 dB 2 2b LongFast 2025-11-27 21:49:04 UTC Current
NHaledon - Dorothy (NHDO) -4.673s
Before 		-112.0 dBm -2.75 dB 1 d5 ETNA LongFast 2025-11-27 21:48:59 UTC View
Steiner Studios Tower (SST) +3.334s
After 		-114.0 dBm -10.75 dB 1 c9 Penn , JLX3 LongFast 2025-11-27 21:49:07 UTC View
ClaremontWx.net (CmWx) +3.348s
After 		-80.0 dBm 5.75 dB 1 c9 Penn LongFast 2025-11-27 21:49:07 UTC View
LORSANGE (LORS) +3.654s
After 		-111.0 dBm -11.00 dB 1 c9 Penn LongFast 2025-11-27 21:49:08 UTC View
DRP1 Chelsea (DRP1) +3.672s
After 		-79.0 dBm 6.00 dB 1 c9 Penn , JLX3 LongFast 2025-11-27 21:49:08 UTC View
CBZ0 🚕 mobile (CBZ0) +3.758s
After 		-113.0 dBm -6.00 dB 1 c9 Penn , JLX3 LongFast 2025-11-27 21:49:08 UTC View
K2XAP / nyme.sh (XAP) +3.946s
After 		-122.0 dBm -11.25 dB 1 c9 Penn , JLX3 LongFast 2025-11-27 21:49:08 UTC View
dkTowerBot (dkTB) +4.628s
After 		-109.0 dBm -18.50 dB 2 a8 24a8 , REX LongFast 2025-11-27 21:49:09 UTC View
Fried Fish 1 | nyme.sh (FF1) +5.097s
After 		-104.0 dBm -12.75 dB 2 - LongFast 2025-11-27 21:49:09 UTC View
YMH 2 @ Your Mom’s House (YMH2) +7.621s
After 		-74.0 dBm -9.50 dB 2 90 NLG1 LongFast 2025-11-27 21:49:12 UTC View
YMH 1 @ Your Mom’s House (YMH1) +7.866s
After 		-119.0 dBm -13.75 dB 4 56 JLX6 LongFast 2025-11-27 21:49:12 UTC View
Meshtastic f5c8 (f5c8) +10.369s
After 		-125.0 dBm -19.25 dB 2 - LongFast 2025-11-27 21:49:14 UTC View
Meshtastic 631c (631c) +10.525s
After 		-106.0 dBm -15.25 dB 2 - LongFast 2025-11-27 21:49:15 UTC View
Gowanus Soda (p1p) +12.122s
After 		-104.0 dBm 0.25 dB 3 1c 631c LongFast 2025-11-27 21:49:16 UTC View
15

Total Receptions

15

Unique Gateways