Packet #27895866 Success

POSITION_APP packet from mfm_msur (mfms) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	27895866
Mesh Packet ID:	`0x7f8766c8` Used for correlation across gateways
Timestamp:	2025-12-15 20:57:49 UTC
From Node:	mfm_msur (mfms)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Mikasa 🧣 📟 (🧣)
Channel:	MediumFast
RSSI:	-106 dBm
SNR:	2.25 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0
Relay Node:	`b0` Vb2 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: 28 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.312345°
Longitude:	-3.861744°
Altitude:	669 m
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:	28 bytes
Gateway:	!aca70b7c
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	4 / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!aca70b7c` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (28 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1770367560` 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`	Not set	uint32
`hop_start`	`4` 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`	`2.25` dB Signal quality at gateway	float
`rx_time`	`1765832269` 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`	`176` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765832269.8032737` 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)
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ 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:	`!aca70b7c`
Position Precision:	32 bits (~1.0m accuracy)
Position precision meters:	`1.0`
Signal Metrics:	RSSI: -106.0 dBm SNR: 2.25 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": 40.3123451, "longitude": -3.8617443, "altitude": 669, "sats_in_view": null, "precision_bits": 32 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!aca70b7c", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1770367560, "to": 4294967295, "id": 2139580104, "rx_time": 1765832269, "rx_snr": 2.25, "rx_rssi": -106, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 176, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0dfb2c0718159dbeb2fd189d05251176406928017800800100b80120", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403123451, "longitude_i": -38617443, "altitude": 669, "time": 1765832209, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 32, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (28 bytes)

0dfb2c0718159dbeb2fd189d05251176406928017800800100b80120

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
Mikasa 🧣 📟 (🧣) Primary	0.000s Reference	-106.0 dBm	2.25 dB	4	`b0` Vb2	MediumFast	2025-12-15 20:57:49 UTC	Current
🎄 SkG@Home 📡🌐 (SkGH)	-1.634s Before	-98.0 dBm	-8.25 dB	1	`11` BAS1	MediumFast	2025-12-15 20:57:48 UTC	View
PXT_Home (PXT1)	-1.489s Before	-110.0 dBm	-1.75 dB	0	`48` mfms	MediumFast	2025-12-15 20:57:48 UTC	View
Karabanchel_Baldur (KarB)	-0.594s Before	-107.0 dBm	-10.75 dB	3	`61` Ilde , TO1	MediumFast	2025-12-15 20:57:49 UTC	View
Venturada2 🗼🌞 (Vb2)	-0.590s Before	-85.0 dBm	6.75 dB	3	`61` TO1	MediumFast	2025-12-15 20:57:49 UTC	View
Eagle’s Nest (EAGL)	-0.578s Before	-123.0 dBm	-13.00 dB	3	`61` TO1	MediumFast	2025-12-15 20:57:49 UTC	View
Fenix (FENX)	-0.265s Before	-120.0 dBm	-10.75 dB	3	`61` TO1	MediumFast	2025-12-15 20:57:49 UTC	View
JPL73B4_Node (JPL4)	-0.263s Before	-108.0 dBm	-5.75 dB	4	`b0` Vb2	MediumFast	2025-12-15 20:57:49 UTC	View
[samsepi0l] 📡🌐 (tlg0)	-0.255s Before	-99.0 dBm	-7.00 dB	4	`b0` PUPM , Vb2	MediumFast	2025-12-15 20:57:49 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-0.237s Before	-79.0 dBm	8.00 dB	4	`b0` Vbm , Vb2	MediumFast	2025-12-15 20:57:49 UTC	View
Villarejo01 (VIL1)	-0.207s Before	-118.0 dBm	-14.50 dB	3	`61` TO1	MediumFast	2025-12-15 20:57:49 UTC	View
JPL73B2_Node (JPL2)	+0.007s After	-95.0 dBm	-10.25 dB	4	`b0` Vbm , Vb2	MediumFast	2025-12-15 20:57:49 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	+0.043s After	-97.0 dBm	-7.00 dB	4	`b0` Vbm , Vb2	MediumFast	2025-12-15 20:57:49 UTC	View
tizon (Sylv)	+0.098s After	-116.0 dBm	-7.50 dB	3	`5d` 🥖	MediumFast	2025-12-15 20:57:49 UTC	View
Justicia Meshtastic b0e4 🏢 (b0e4)	+0.308s After	-116.0 dBm	-8.50 dB	3	`25` 🌇	MediumFast	2025-12-15 20:57:50 UTC	View
JAGO1_Cañaveral (JAGO)	+0.334s After	-114.0 dBm	-4.00 dB	4	`84` SNM , Ancr , 📡	MediumFast	2025-12-15 20:57:50 UTC	View
Villalbilla02 (VBV2)	+0.409s After	-117.0 dBm	-7.00 dB	4	`b0` Vb2	MediumFast	2025-12-15 20:57:50 UTC	View
P3 iGate 🏠🌐 (P3N2)	+0.786s After	-40.0 dBm	11.25 dB	4	`25` P3N1	MediumFast	2025-12-15 20:57:50 UTC	View
Skynet (Sky)	+6.914s After	-81.0 dBm	2.00 dB	3	`5d` 🥖	MediumFast	2025-12-15 20:57:56 UTC	View

19

Total Receptions

19

Unique Gateways