Packet #4033320 Success

POSITION_APP packet from Meshtastic_HCTR (HCTR) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	4033320
Mesh Packet ID:	`0x29b9adc0` Used for correlation across gateways
Timestamp:	2025-12-24 11:35:01 UTC
From Node:	Meshtastic_HCTR (HCTR)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	KageNet Decker (D3KR)
Channel:	LongFast
RSSI:	-125 dBm
SNR:	-15.75 dBm
Hop Info:	2/4 hops Start: 4, Limit: 2
Relay Node:	`7b` 4b7b 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: 36 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.697856°
Longitude:	-73.963930°
Altitude:	10 m
Satellites:	6
Precision:	14 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:	36 bytes
Gateway:	!052c7949
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	2 / 4

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

Field	Value
`gateway_id`	`!052c7949` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (36 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`135897846` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`36` 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`	`-125.0` dBm Signal strength at gateway	int32
`rx_snr`	`-15.75` dB Signal quality at gateway	float
`rx_time`	`1766576273` 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`	`123` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1766576101.1374962` 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: ~1500.0m accuracy

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!052c7949`
Position Precision:	14 bits (~1500.0m accuracy)
Position precision meters:	`1500.0`
Signal Metrics:	RSSI: -125.0 dBm SNR: -15.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	36 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.697856, "longitude": -73.9639296, "altitude": 10, "sats_in_view": 6, "precision_bits": 14 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!052c7949", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 135897846, "to": 4294967295, "id": 700034496, "rx_time": 1766576273, "rx_snr": -15.75, "rx_rssi": -125, "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": 123, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00004218150000ead3180a257ed04b69280258a70378008001b0cce10d980106b8010e", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 406978560, "longitude_i": -739639296, "altitude": 10, "time": 1766576254, "location_source": "LOC_INTERNAL", "PDOP": 423, "ground_speed": 0, "ground_track": 28862000, "sats_in_view": 6, "precision_bits": 14, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (36 bytes)

0d00004218150000ead3180a257ed04b69280258a70378008001b0cce10d980106b8010e

Hex Analysis:

Size:	36 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
KageNet Decker (D3KR) Primary	0.000s Reference	-125.0 dBm	-15.75 dB	2	`7b` 4b7b	LongFast	2025-12-24 11:35:01 UTC	Current
25 Washington Ave (25WA)	-5.030s Before	-76.0 dBm	-5.00 dB	2	`c9` Penn	LongFast	2025-12-24 11:34:56 UTC	View
Steiner Studios Tower (SST)	-5.017s Before	-117.0 dBm	-10.75 dB	2	`c9` Penn , JLX3	LongFast	2025-12-24 11:34:56 UTC	View
MeshM0xie (M0x)	-5.011s Before	-99.0 dBm	-4.25 dB	2	`c9` Penn	LongFast	2025-12-24 11:34:56 UTC	View
YMH 1 @ Your Mom’s House (YMH1)	-5.005s Before	-126.0 dBm	-18.75 dB	2	`c9` Penn	LongFast	2025-12-24 11:34:56 UTC	View
ClaremontWx.net (CmWx)	-4.998s Before	-92.0 dBm	-3.25 dB	2	`c9` Penn , JLX3	LongFast	2025-12-24 11:34:56 UTC	View
Izutsumi - seano@masto.nyc (izu)	-4.817s Before	-90.0 dBm	3.25 dB	2	`c9` Penn , JLX3	LongFast	2025-12-24 11:34:56 UTC	View
CBZ0 🚕 mobile (CBZ0)	-4.493s Before	-123.0 dBm	-14.00 dB	2	`c9` Penn , JLX3	LongFast	2025-12-24 11:34:56 UTC	View
K2XAP R1int (XAPM)	-3.719s Before	-60.0 dBm	5.50 dB	2	`57` CmWx	LongFast	2025-12-24 11:34:57 UTC	View
K2XAP / nyme.sh (XAP)	-3.686s Before	-41.0 dBm	6.00 dB	2	`57` CmWx	LongFast	2025-12-24 11:34:57 UTC	View
dkTowerBot (dkTB)	-2.904s Before	-99.0 dBm	-9.50 dB	3	`34` 8b34 , cf34 , dmlt	LongFast	2025-12-24 11:34:58 UTC	View
Fried Fish FF1 (FF1)	-2.367s Before	-89.0 dBm	-4.50 dB	4	`b8` 🫠	LongFast	2025-12-24 11:34:58 UTC	View
nLink-NY-Jamaica1 (NLJ1)	-1.623s Before	-91.0 dBm	3.00 dB	3	`88` grns , 2f88	LongFast	2025-12-24 11:34:59 UTC	View
North Haledon - Dorothy (NHDO)	-1.089s Before	-97.0 dBm	-5.25 dB	4	`4b`	LongFast	2025-12-24 11:35:00 UTC	View
Whole Foods Market UES (WFMK)	-0.847s Before	-102.0 dBm	-6.75 dB	4	`b4` PARK	LongFast	2025-12-24 11:35:00 UTC	View
Meshtastic 631c (GRBH)	+45.695s After	-103.0 dBm	-14.25 dB	4	`2d` 🪟	LongFast	2025-12-24 11:35:46 UTC	View

16

Total Receptions

16

Unique Gateways