Packet #1702728 Success

POSITION_APP packet from Lv4 - Heltec V4 Green (Lv4) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	1702728
Mesh Packet ID:	`0xf478eaa4` Used for correlation across gateways
Timestamp:	2025-11-07 19:26:28 UTC
From Node:	Lv4 - Heltec V4 Green (Lv4)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Penn Plaza (Penn)
Channel:	LongFast
RSSI:	-17 dBm
SNR:	5.75 dBm
Hop Info:	0/6 hops Start: 6, Limit: 6
Relay Node:	`e0` Lv4 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: 34 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.763392°
Longitude:	-74.003251°
Altitude:	227 m
Satellites:	8
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:	34 bytes
Gateway:	!485258c9
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	Unknown / 6

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!485258c9` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (34 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2997325024` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`34` bytes	size
`hop_limit`	`6` Remaining hops allowed	uint32
`hop_start`	`6` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-17.0` dBm Signal strength at gateway	int32
`rx_snr`	`5.75` dB Signal quality at gateway	float
`rx_time`	`1762543656` 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`	`224` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1762543588.5132954` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!485258c9`
Position Precision:	13 bits (~2900.0m accuracy)
Position precision meters:	`2900.0`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -17.0 dBm SNR: 5.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	34 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.763392, "longitude": -74.0032512, "altitude": 227, "sats_in_view": 8, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!485258c9", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2997325024, "to": 4294967295, "id": 4101565092, "rx_time": 1762543656, "rx_snr": 5.75, "rx_rssi": -17, "hop_limit": 6, "hop_start": 6, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 224, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00004c18150000e4d318e3012526480e69280258c5017800800100980108b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407633920, "longitude_i": -740032512, "altitude": 227, "time": 1762543654, "location_source": "LOC_INTERNAL", "PDOP": 197, "ground_speed": 0, "ground_track": 0, "sats_in_view": 8, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (34 bytes)

0d00004c18150000e4d318e3012526480e69280258c5017800800100980108b8010d

Hex Analysis:

Size:	34 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
Penn Plaza (Penn) Primary	0.000s Reference	-17.0 dBm	5.75 dB	0	`e0` Lv4	LongFast	2025-11-07 19:26:28 UTC	Current
dkTowerBot (dkTB)	-0.446s Before	-89.0 dBm	-2.25 dB	0	`e0` Lv4	LongFast	2025-11-07 19:26:28 UTC	View
LORSANGE (LORS)	-0.158s Before	-89.0 dBm	6.00 dB	0	`e0` Lv4	LongFast	2025-11-07 19:26:28 UTC	View
K2XAP / nyme.sh (XAP)	-0.126s Before	-106.0 dBm	2.75 dB	0	`e0` Lv4	LongFast	2025-11-07 19:26:28 UTC	View
Claudiopolis-440c (440c)	+0.177s After	-85.0 dBm	1.75 dB	0	`e0` Lv4	LongFast	2025-11-07 19:26:28 UTC	View
🦨 corruptedstack🦨 meshtoad 🐸 (dmbp)	+1.658s After	-100.0 dBm	-11.00 dB	1	-	LongFast	2025-11-07 19:26:30 UTC	View
corruptedstack Weather (cswx)	+1.706s After	Unknown	Unknown	2	`ed` dmbp	LongFast	2025-11-07 19:26:30 UTC	View
The Sack (SACK)	+1.746s After	-42.0 dBm	5.25 dB	1	`9c` 4e9c	LongFast	2025-11-07 19:26:30 UTC	View
csbot (dmbb)	+1.979s After	Unknown	Unknown	2	`ed` dmbp	LongFast	2025-11-07 19:26:30 UTC	View
1 MW 1 West Side \| https://nyme.sh (1MW1)	+3.692s After	-119.0 dBm	-15.50 dB	1	`80` p@bp , BR03	LongFast	2025-11-07 19:26:32 UTC	View
CBZ0 🚕 mobile (CBZ0)	+4.982s After	-122.0 dBm	-19.00 dB	2	`4c` JLY3 , SST	LongFast	2025-11-07 19:26:33 UTC	View
Meshtastic 1ca3 (1ca3)	+5.747s After	-117.0 dBm	-10.50 dB	2	`c4` NOVA , 3fc4	LongFast	2025-11-07 19:26:34 UTC	View
BSD 619 TD+ (K619)	+6.626s After	-75.0 dBm	6.00 dB	1	`ec` LB1	LongFast	2025-11-07 19:26:35 UTC	View
aurelia (🧚)	+6.919s After	-125.0 dBm	-18.50 dB	1	`ec` LB1	LongFast	2025-11-07 19:26:35 UTC	View
JOS1tastic 1497 (JOS1)	+7.214s After	-63.0 dBm	5.75 dB	3	`aa` JOSX	LongFast	2025-11-07 19:26:35 UTC	View
ClaremontWx.net (CmWx)	+8.478s After	-85.0 dBm	2.00 dB	3	`48` VYL0 , CWM1	LongFast	2025-11-07 19:26:36 UTC	View
Demarest_SEEED (SEED)	+10.011s After	-124.0 dBm	-14.50 dB	3	`92` 9e92	LongFast	2025-11-07 19:26:38 UTC	View
DRP0 Astoria (DRP0)	+52.443s After	-66.0 dBm	6.50 dB	4	`ac` JJ00 , swam , 🌀 , A3WS , FF1 , 🌃 , 09ac , feac , 98ac	LongFast	2025-11-07 19:27:20 UTC	View

18

Total Receptions

18

Unique Gateways