Packet #2778173 Success

POSITION_APP packet from Elmwood Park NJ Node (🗽) to !ffffffff

18
Total Receptions
17
Unique Gateways
1
Hop Count
27
Payload Bytes
Packet Information
Database ID: 2778173
Mesh Packet ID: 0xc7a9b077
Used for correlation across gateways
Timestamp: 2025-11-26 17:33:16 UTC
From Node: Elmwood Park NJ Node (🗽)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: SACKMESHv4 l https://nyme.sh (SMv4)
Channel: LongFast
RSSI: -106 dBm
SNR: -15.25 dBm
Hop Info: 1/7 hops
Start: 7, Limit: 6
Relay Node: e6
Last byte of the last hop that relayed this packet
Payload Data
Protocol: POSITION_APP
Size: 27 bytes
Decoded: Yes
Decoded Data:
Latitude:40.907571°
Longitude:-74.121216°
Altitude:26 m
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:27 bytes
Gateway:!b2a706e4
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:1 / 7
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...
Exposure Risks:
âš  Visible to all nodes on channel
âš  Default channel - no encryption
+ 3 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !b2a706e4
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (27 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2194008271
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 27 bytes size
hop_limit 6
Remaining hops allowed 		uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 1
Calculated: hop_start - hop_limit 		derived
rx_rssi -106.0 dBm
Signal strength at gateway 		int32
rx_snr -15.25 dB
Signal quality at gateway 		float
rx_time 1764178503
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 230
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1764178396.2373083
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:
  • âš  Visible to all nodes on channel
  • âš  Default channel - no encryption
  • âš  Packet visible to MQTT subscribers
  • âš  Multi-hop path visible (1 hops)
  • âš  RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !b2a706e4
Position Precision: 14 bits (~1500.0m accuracy)
Position precision meters: 1500.0
Signal Metrics: RSSI: -106.0 dBm
SNR: -15.25 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:27 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.9075712, "longitude": -74.121216, "altitude": 26, "sats_in_view": null, "precision_bits": 14 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!b2a706e4", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2194008271, "to": 4294967295, "id": 3349786743, "rx_time": 1764178503, "rx_snr": -15.25, "rx_rssi": -106, "hop_limit": 6, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 230, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00006218150000d2d3181a25453a276928017800800100b8010e", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 409075712, "longitude_i": -741212160, "altitude": 26, "time": 1764178501, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 14, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (27 bytes)
0d00006218150000d2d3181a25453a276928017800800100b8010e
Hex Analysis:
Size:27 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
SACKMESHv4 l https://nyme.sh (SMv4) Primary 0.000s
Reference 		-106.0 dBm -15.25 dB 1 e6 LongFast 2025-11-26 17:33:16 UTC Current
!ebb328a2 (28a2) +20.302s
After 		-96.0 dBm -7.00 dB 4 c9 Penn LongFast 2025-11-26 17:33:36 UTC View
Steiner Studios Tower (SST) +20.310s
After 		-114.0 dBm -9.50 dB 4 c9 Penn , JLX3 LongFast 2025-11-26 17:33:36 UTC View
ClaremontWx.net (CmWx) +20.346s
After 		-82.0 dBm -2.50 dB 4 c9 Penn LongFast 2025-11-26 17:33:36 UTC View
DRP1 Chelsea (DRP1) +20.673s
After 		-81.0 dBm 5.50 dB 4 c9 Penn , JLX3 LongFast 2025-11-26 17:33:36 UTC View
LORSANGE (LORS) +20.684s
After 		-113.0 dBm -5.75 dB 4 c9 Penn LongFast 2025-11-26 17:33:36 UTC View
Psalm 23 (3:16) +20.728s
After 		-114.0 dBm -4.25 dB 4 c9 Penn LongFast 2025-11-26 17:33:36 UTC View
Gowanus Soda (p1p) +22.007s
After 		-115.0 dBm -8.00 dB 5 31 a031 , ν LongFast 2025-11-26 17:33:38 UTC View
K2XAP / nyme.sh (XAP) +23.388s
After 		-76.0 dBm -6.00 dB 5 78 SCP2 LongFast 2025-11-26 17:33:39 UTC View
Meshtastic 1ca3 (1ca3) +24.110s
After 		-118.0 dBm -11.25 dB 6 c4 NOVA , 3fc4 LongFast 2025-11-26 17:33:40 UTC View
YMH 1 @ Your Mom’s House (YMH1) +24.122s
After 		-125.0 dBm -17.00 dB 4 56 JLX6 LongFast 2025-11-26 17:33:40 UTC View
dkTowerBot (dkTB) +24.583s
After 		-102.0 dBm -12.25 dB 6 34 8b34 , RbHf , 4034 , dmlt LongFast 2025-11-26 17:33:40 UTC View
K2XAP / nyme.sh (XAP) +26.886s
After 		-40.0 dBm 7.75 dB 4 57 CmWx LongFast 2025-11-26 17:33:43 UTC View
Meshtastic 631c (631c) +45.409s
After 		-98.0 dBm -7.25 dB 7 b9 NYCR LongFast 2025-11-26 17:34:01 UTC View
JLY4 - Roosevelt Solar (JLY4) +491.695s
After 		-86.0 dBm -16.50 dB 3 d5 ETNA LongFast 2025-11-26 17:41:27 UTC View
MeshM0xie (M0x) +607.374s
After 		-102.0 dBm -5.50 dB 3 c2 Asra LongFast 2025-11-26 17:43:23 UTC View
KD2-2 (KD22) +620.602s
After 		-112.0 dBm -17.75 dB 3 d5 ETNA LongFast 2025-11-26 17:43:36 UTC View
nLink-NY-Jamaica1 (NLJ1) +1234.714s
After 		-89.0 dBm 3.00 dB 5 88 grns , 2f88 , P3NY LongFast 2025-11-26 17:53:50 UTC View
18

Total Receptions

17

Unique Gateways