Packet #4033823 Success

POSITION_APP packet from N1UGK QTH (UGKH) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	4033823
Mesh Packet ID:	`0x379cc3da` Used for correlation across gateways
Timestamp:	2025-12-24 11:52:21 UTC
From Node:	N1UGK QTH (UGKH)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	dkTowerBot (dkTB)
Channel:	LongFast
RSSI:	-106 dBm
SNR:	-17.25 dBm
Hop Info:	4/5 hops Start: 5, Limit: 1
Relay Node:	`5b` wvs1 , 585b , 📟 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: 17 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.745648°
Longitude:	-74.278680°
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:	17 bytes
Gateway:	!dddc01fa
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	4 / 5

Privacy Summary

Exposure Level:
Broadcast

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

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 4 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!dddc01fa` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (17 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2733340684` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`17` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-106.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.25` dB Signal quality at gateway	float
`rx_time`	`1766577309` 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`	`91` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1766577141.9765117` 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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared
⚠ Multi-hop path visible (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!dddc01fa`
Position Precision:	32 bits (~1.0m accuracy)
Position precision meters:	`1.0`
Signal Metrics:	RSSI: -106.0 dBm SNR: -17.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	17 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.745648, "longitude": -74.27868, "altitude": 0, "sats_in_view": null, "precision_bits": 32 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!dddc01fa", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2733340684, "to": 4294967295, "id": 933020634, "rx_time": 1766577309, "rx_snr": -17.25, "rx_rssi": -106, "hop_limit": 1, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 91, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0de04a49181510f9b9d318002801b80120", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407456480, "longitude_i": -742786800, "altitude": 0, "location_source": "LOC_MANUAL", "precision_bits": 32, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (17 bytes)

0de04a49181510f9b9d318002801b80120

Hex Analysis:

Size:	17 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
dkTowerBot (dkTB) Primary	0.000s Reference	-106.0 dBm	-17.25 dB	4	`5b` wvs1 , 585b , 📟	LongFast	2025-12-24 11:52:21 UTC	Current
North Haledon - Dorothy (NHDO)	-16.895s Before	-101.0 dBm	-8.75 dB	4	`81` RAK3	LongFast	2025-12-24 11:52:05 UTC	View
Izutsumi - seano@masto.nyc (izu)	-9.177s Before	-50.0 dBm	6.00 dB	4	`31` a031 , lt	LongFast	2025-12-24 11:52:12 UTC	View
ClaremontWx.net (CmWx)	+28.672s After	-95.0 dBm	-4.25 dB	1	`5b` 585b	LongFast	2025-12-24 11:52:50 UTC	View
Steiner Studios Tower (SST)	+29.987s After	-113.0 dBm	-6.50 dB	2	`81` Titi	LongFast	2025-12-24 11:52:51 UTC	View
K2XAP / nyme.sh (XAP)	+30.396s After	-115.0 dBm	-8.50 dB	2	`81` Titi	LongFast	2025-12-24 11:52:52 UTC	View
K2XAP R1int (XAPM)	+31.031s After	-59.0 dBm	6.00 dB	2	`57` CmWx	LongFast	2025-12-24 11:52:53 UTC	View
25 Washington Ave (25WA)	+31.127s After	-75.0 dBm	-2.75 dB	3	`4c` JLY3 , SST	LongFast	2025-12-24 11:52:53 UTC	View
Meshtastic 631c (GRBH)	+31.392s After	-110.0 dBm	-20.00 dB	3	`31` a031 , ν	LongFast	2025-12-24 11:52:53 UTC	View
Fried Fish FF1 (FF1)	+32.399s After	-86.0 dBm	-2.50 dB	4	`b8` 🫠	LongFast	2025-12-24 11:52:54 UTC	View
MeshM0xie (M0x)	+41.517s After	-102.0 dBm	-12.00 dB	5	`db`	LongFast	2025-12-24 11:53:03 UTC	View
nLink-NY-Jamaica1 (NLJ1)	+42.782s After	-90.0 dBm	3.00 dB	5	`88` grns , 2f88	LongFast	2025-12-24 11:53:04 UTC	View
CBZ0 🚕 mobile (CBZ0)	+120.588s After	-122.0 dBm	-13.50 dB	5	`fa` dkTB	LongFast	2025-12-24 11:54:22 UTC	View
Meshtastic fda8 (fda8)	+191.052s After	-73.0 dBm	-16.50 dB	4	`7b` 4b7b	LongFast	2025-12-24 11:55:33 UTC	View
YMH 1 @ Your Mom’s House (YMH1)	+191.103s After	-110.0 dBm	-2.25 dB	4	`7b` 4b7b	LongFast	2025-12-24 11:55:33 UTC	View
KageNet Decker (D3KR)	+191.408s After	-117.0 dBm	-7.00 dB	4	`7b` 4b7b	LongFast	2025-12-24 11:55:33 UTC	View
somethingH4ck3y (smth)	+1151.290s After	-123.0 dBm	-12.25 dB	4	-	LongFast	2025-12-24 12:11:33 UTC	View

17

Total Receptions

17

Unique Gateways