Packet #275452 Success

NEIGHBORINFO_APP packet from Bryn Mawr Base (BRYN) to !00000001

1
Total Receptions
1
Unique Gateways
0
Hop Count
139
Payload Bytes
Packet Information
Database ID: 275452
Mesh Packet ID: 0x68bd479f
Used for correlation across gateways
Timestamp: 2026-04-10 10:51:39 UTC
From Node: Bryn Mawr Base (BRYN)
To Node: !00000001 (0001)
Success: Processed
Protocol: NEIGHBORINFO_APP
Port: 71
Gateway: Bryn Mawr Base (BRYN)
Channel: LongFast
RSSI: Unknown
SNR: Unknown
Hop Info: 0/7 hops
Start: 7, Limit: 7
Relay Node: 48 BRYN
Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions
Payload Data
Protocol: NEIGHBORINFO_APP
Size: 139 bytes
Decoded: Yes
Decoded Data:
Neighbor Information Report
Reporting Node: Bryn Mawr Base (BRYN)
Last Sent By: Bryn Mawr Base (BRYN)
Broadcast Interval:14400 seconds
Neighbors Found:10
10

Active Neighbors

Neighbor Details
Neighbor Node SNR Last Heard Broadcast Interval Signal Quality
Hazelwood Base (HBSE) -17.2 dB Unknown Unknown Poor
Bryn Mawr c816 (JJ) (c816) -5.0 dB Unknown Unknown Fair
2N3055 🚲 (2N~1) 6.0 dB Unknown Unknown Excellent
BM-RELAY (BM-) 5.8 dB Unknown Unknown Excellent
!9ee83d00 (3d00) 0.0 dB Unknown Unknown Good
AEM eee8 (AEM) 5.0 dB Unknown Unknown Excellent
dot dot dot (dot) 7.2 dB Unknown Unknown Excellent
et cetera (etc) 4.8 dB Unknown Unknown Good
LoRaTheExplorer (DSTL) -18.8 dB Unknown Unknown Poor
2N3904 (2N39) 5.5 dB Unknown Unknown Excellent
This neighbor information was reported by Bryn Mawr Base (BRYN) and shows which nodes it can directly communicate with and their signal quality.
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:139 bytes
Gateway:!16ced548
Channel:LongFast
Payload Type:NEIGHBORINFO_APP
Hop Count:Unknown / 7
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...
Exposure Risks:
âš  Default channel - no encryption
âš  Packet visible to MQTT subscribers
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !16ced548
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (139 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 382653768
Source node ID 		uint32
to 1
Target node ID 		uint32
decoded.portnum 71
NEIGHBORINFO_APP 		enum
decoded.payload_length 139 bytes size
hop_limit 7
Remaining hops allowed 		uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi Not set int32
rx_snr Not set float
rx_time 1775818299
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack False
No ACK requested 		bool
priority 10
Packet priority level 		enum
delayed Not set enum
channel Not set uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 72
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1775818299.947135
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
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • âš  Default channel - no encryption
  • âš  Packet visible to MQTT subscribers
MQTT-Specific Fields
Gateway ID: !16ced548
Zero Hop Policy: Enabled
Direct gateway connection
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NEIGHBORINFO_APP
Size:139 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "node_id": 382653768, "last_sent_by_id": 382653768, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1129901556, "snr": -17.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Hazelwood Base (HBSE)" }, { "node_id": 1277544470, "snr": -5.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "Bryn Mawr c816 (JJ) (c816)" }, { "node_id": 2997321012, "snr": 6.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "2N3055 🚲 (2N~1)" }, { "node_id": 4083186324, "snr": 5.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "BM-RELAY (BM-)" }, { "node_id": 2666020096, "snr": 0.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "!9ee83d00" }, { "node_id": 2377510632, "snr": 5.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "AEM eee8 (AEM)" }, { "node_id": 1293549033, "snr": 7.25, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "dot dot dot (dot)" }, { "node_id": 2697749372, "snr": 4.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "et cetera (etc)" }, { "node_id": 925650566, "snr": -18.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "LoRaTheExplorer (DSTL)" }, { "node_id": 80063124, "snr": 5.5, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "2N3904 (2N39)" } ], "neighbor_count": 10, "node_name": "Bryn Mawr Base (BRYN)", "last_sent_by_name": "Bryn Mawr Base (BRYN)" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!16ced548", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 382653768, "to": 1, "id": 1757235103, "rx_time": 1775818299, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 7, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 72, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08c8aabbb60110c8aabbb60118c070220b08f4dbe39a041500008ac1220b08969097e104150000a0c0220b08b4fa9d950b150000c040220b0894f5819b0f150000b84022060880faa0f709220b08e8ddd7ed08150000a040220b08e9fbe7e804150000e840220b08fcc6b1860a1500009840220b08869db1b90315000096c1220a0894d59626150000b040", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 382653768, "last_sent_by_id": 382653768, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 1129901556, "snr": -17.25 }, { "node_id": 1277544470, "snr": -5.0 }, { "node_id": 2997321012, "snr": 6.0 }, { "node_id": 4083186324, "snr": 5.75 }, { "node_id": 2666020096 }, { "node_id": 2377510632, "snr": 5.0 }, { "node_id": 1293549033, "snr": 7.25 }, { "node_id": 2697749372, "snr": 4.75 }, { "node_id": 925650566, "snr": -18.75 }, { "node_id": 80063124, "snr": 5.5 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }
Raw Packet Data (139 bytes)
08c8aabbb60110c8aabbb60118c070220b08f4dbe39a041500008ac1220b08969097e104150000a0c0220b08b4fa9d950b150000c040220b0894f5819b0f150000b84022060880faa0f709220b08e8ddd7ed08150000a040220b08e9fbe7e804150000e840220b08fcc6b1860a1500009840220b08869db1b90315000096c1220a0894d59626150000b040
Hex Analysis:
Size:139 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
Gateway Time Offset RSSI SNR Hops Relay Channel Timestamp Actions
Bryn Mawr Base (BRYN) Primary 0.000s
Reference 		Unknown Unknown 0 48 BRYN LongFast 2026-04-10 10:51:39 UTC Current
No other receptions found within ±2 seconds
1

Total Receptions

1

Unique Gateways