D3D0-GT-8πŸ‡΅πŸ‡Ή Recent

Node ID: !54046de0 (1409576416) β€’ Last seen: 1 hour ago

493
Total Packets
107
Destinations
-2.8
Avg RSSI (dBm)
0.4
Avg Hops
Node Information
Node Name: D3D0-GT-8πŸ‡΅πŸ‡Ή
Node ID (Hex): !54046de0
Node ID (Dec): 1409576416
Hardware Model: RAK4631
Role: CLIENT_BASE
Primary Channel: LongFast
First Seen: 2026-06-30 07:59:32 UTC
Last Seen: 2026-07-30 10:58:01 UTC
Avg Signal: -2.8 dBm
Avg SNR: 0.30 dB
Firmware Version: Not available
Unique Gateways: 19
Telemetry History
Protocol Usage
Protocol Count Percentage Avg RSSI Avg SNR
NODEINFO_APP 323 65.5%
-13.7 dBm -1.00 dB
TELEMETRY_APP 120 24.3%
-67.9 dBm -4.70 dB
ROUTING_APP 22 4.5%
-5.7 dBm -0.80 dB
TRACEROUTE_APP 21 4.3%
-48.3 dBm -2.90 dB
UNKNOWN_APP 4 0.8%
- -
TEXT_MESSAGE_APP 2 0.4%
- -
POSITION_APP 1 0.2%
- -
Recent Packets
Time Protocol To Node Gateway RSSI SNR Hops Action
1 hour ago NODEINFO_APP Macgyver-CL-8 (527c) NMG04-C-8πŸ‡΅πŸ‡Ή (1e9c) -30 dBm 6.0 dB 0 View
3 hours ago NODEINFO_APP Macgyver-CL-8 (527c) D3D0-GT-8πŸ‡΅πŸ‡Ή (6de0) - - 0 View
3 hours ago NODEINFO_APP RKL-CLM-868 (45f1) D3D0-GT-8πŸ‡΅πŸ‡Ή (6de0) - - 0 View
3 hours ago NODEINFO_APP VNGzero-8πŸ‡΅πŸ‡ΉπŸ‡¬πŸ‡§ (9a73) D3D0-GT-8πŸ‡΅πŸ‡Ή (6de0) - - 0 View
4 hours ago NODEINFO_APP CharlieDangerADV-8 (9a48) D3D0-GT-8πŸ‡΅πŸ‡Ή (6de0) - - 0 View
4 hours ago NODEINFO_APP CharlieDNGRBase-GT-8 (3304) D3D0-GT-8πŸ‡΅πŸ‡Ή (6de0) - - 0 View
5 hours ago NODEINFO_APP SIMOES-8 (3ae9) D3D0-GT-8πŸ‡΅πŸ‡Ή (6de0) - - 0 View
5 hours ago TELEMETRY_APP Broadcast D3D0-GT-8πŸ‡΅πŸ‡Ή (6de0) - - 0 View
9 hours ago NODEINFO_APP Broadcast Meshtastic f58c (f58c) -110 dBm 0.5 dB 4 View
9 hours ago TELEMETRY_APP Broadcast CasaAmarelaForteDaCasa-GW-8 (98fa) -104 dBm -2.5 dB 2 View
19 hours ago NODEINFO_APP B0SS-8 πŸ‡΅πŸ‡Ή πŸ‡ͺπŸ‡Ί (T) TabH3-8 (8e80) -110 dBm -16.25 dB 2 View
20 hours ago TELEMETRY_APP Broadcast VP-CL-8πŸ‡΅πŸ‡Ή (a58c) -139 dBm -16.75 dB 2 View
21 hours ago NODEINFO_APP Broadcast CasaAmarelaForteDaCasa-GW-8 (98fa) -98 dBm 1.5 dB 2 View
1 day ago TELEMETRY_APP Broadcast CasaAmarelaForteDaCasa-GW-8 (98fa) -102 dBm -2.0 dB 2 View
1 day ago TRACEROUTE_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) NMG03-8πŸ‡΅πŸ‡Ή (7919) -98 dBm 4.5 dB 1 View
1 day ago TELEMETRY_APP Broadcast CasaAmarelaForteDaCasa-GW-8 (98fa) -110 dBm -15.5 dB 1 View
1 day ago TELEMETRY_APP Broadcast CasaAmarelaForteDaCasa-GW-8 (98fa) -108 dBm -8.5 dB 1 View
1 day ago TELEMETRY_APP Broadcast CasaAmarelaForteDaCasa-GW-8 (98fa) -108 dBm -10.5 dB 1 View
1 day ago TELEMETRY_APP Broadcast NMG03-8πŸ‡΅πŸ‡Ή (7919) -48 dBm 10.0 dB 0 View
1 day ago TELEMETRY_APP Broadcast NMG03-8πŸ‡΅πŸ‡Ή (7919) -88 dBm 10.0 dB 0 View
Time Protocol From Node To Node RSSI SNR Hops Action
3 hours ago POSITION_APP SUZ-CM-8 (0382) Broadcast (ffff) -128 dBm -19.75 dB 2 View
4 hours ago POSITION_APP SUZ-CM-8 (0382) Broadcast (ffff) -128 dBm -18.0 dB 1 View
5 hours ago NODEINFO_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -101 dBm 4.75 dB 0 View
5 hours ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -96 dBm 5.0 dB 0 View
5 hours ago TELEMETRY_APP NOX-CL-868 (badc) Broadcast (ffff) -127 dBm -17.0 dB 2 View
5 hours ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -65 dBm 5.5 dB 1 View
5 hours ago TELEMETRY_APP CT2IUL-8 AJUDA MONSANTO (1d04) Broadcast (ffff) -37 dBm 6.5 dB 4 View
5 hours ago POSITION_APP j0rgGT-8 (d7de) Broadcast (ffff) -124 dBm -12.0 dB 3 View
5 hours ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -44 dBm 6.0 dB 0 View
5 hours ago POSITION_APP πŸͺͺ CS7ATL#001-8 πŸ‡΅πŸ‡Ή (ec86) Broadcast (ffff) -37 dBm 6.25 dB 3 View
5 hours ago NODEINFO_APP LFT-8 (cf66) Broadcast (ffff) -125 dBm -13.25 dB 4 View
3 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -128 dBm -20.0 dB 0 View
3 days ago NODEINFO_APP NOX-CL-868 (badc) Broadcast (ffff) -64 dBm 6.5 dB 1 View
3 days ago NODEINFO_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -104 dBm 3.75 dB 0 View
3 days ago NODEINFO_APP NF-1 X-Wing (99ac) Broadcast (ffff) -65 dBm 5.75 dB 1 View
3 days ago NODEINFO_APP RPS6-GT-8 (d320) Broadcast (ffff) -128 dBm -17.5 dB 1 View
3 days ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -47 dBm 6.5 dB 0 View
3 days ago NODEINFO_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -47 dBm 6.0 dB 0 View
3 days ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -46 dBm 6.75 dB 0 View
3 days ago POSITION_APP Leoa_VR_MQP-8 (e1b8) Broadcast (ffff) -128 dBm -18.5 dB 2 View
3 days ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -101 dBm 4.0 dB 1 View
3 days ago POSITION_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -103 dBm 4.0 dB 0 View
3 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -128 dBm -18.5 dB 0 View
3 days ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -47 dBm 6.0 dB 0 View
3 days ago ROUTING_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Meshtastic Bot (5e3c) -47 dBm 6.0 dB 0 View
3 days ago TRACEROUTE_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) CS7ATL-VNMilfontes-GT-8 (895b) -48 dBm 5.75 dB 0 View
3 days ago NODEINFO_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -47 dBm 5.75 dB 0 View
3 days ago UNKNOWN_APP SUZ-CM-8 (0382) SUZ-GW-8 (b4e4) -128 dBm -20.5 dB 1 View
3 days ago UNKNOWN_APP SUZ-GW-8 (b4e4) SUZ-CM-8 (0382) -128 dBm -18.75 dB 1 View
3 days ago ROUTING_APP SUZ-GW-8 (b4e4) SUZ-CM-8 (0382) -128 dBm -19.25 dB 1 View
3 days ago NODEINFO_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -102 dBm 4.75 dB 0 View
3 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -128 dBm -20.25 dB 1 View
3 days ago POSITION_APP Leoa_VR_MQP-8 (e1b8) Broadcast (ffff) -64 dBm 6.0 dB 3 View
3 days ago ROUTING_APP SUZ-GW-8 (b4e4) SUZ-CM-8 (0382) -126 dBm -14.5 dB 1 View
3 days ago ROUTING_APP SUZ-GW-8 (b4e4) SUZ-CM-8 (0382) -128 dBm -17.5 dB 1 View
3 days ago ROUTING_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Meshtastic Bot (5e3c) -55 dBm 6.75 dB 0 View
3 days ago TRACEROUTE_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) WAXTAAN_02-CL-8 (5706) -57 dBm 5.75 dB 0 View
3 days ago NODEINFO_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -62 dBm 6.5 dB 0 View
3 days ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -56 dBm 6.25 dB 0 View
3 days ago UNKNOWN_APP SUZ-GW-8 (b4e4) SUZ-CM-8 (0382) -128 dBm -18.5 dB 2 View
3 days ago NODEINFO_APP Meshtastic 06d8 (06d8) Sprite-8 πŸ‘Ύ (5900) -96 dBm 5.75 dB 0 View
3 days ago NODEINFO_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Sprite-8 πŸ‘Ύ (5900) -80 dBm 7.25 dB 0 View
3 days ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -66 dBm 6.0 dB 0 View
3 days ago POSITION_APP R3X-GW-8 (9b33) !0f1455e0 (55e0) -127 dBm -15.5 dB 0 View
3 days ago NODEINFO_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -99 dBm 5.5 dB 0 View
3 days ago NODEINFO_APP 6834-8 (6834) Pepe-GPS (6089) -126 dBm -13.75 dB 2 View
3 days ago NODEINFO_APP R3X-GW-8 (9b33) Broadcast (ffff) -128 dBm -20.25 dB 0 View
3 days ago NODEINFO_APP BCdC-GT-8 (6dc8) Broadcast (ffff) -127 dBm -16.0 dB 3 View
3 days ago TELEMETRY_APP Tracker 0d90 (0d90) Broadcast (ffff) -127 dBm -15.25 dB 4 View
3 days ago TELEMETRY_APP NOX-CL-868 (badc) Broadcast (ffff) -65 dBm 6.25 dB 1 View
3 days ago ROUTING_APP RIBATEXANO-CLM-8 πŸ‡΅πŸ‡Ή (a83c) EUROKIT-GT-8 (4ded) -68 dBm 6.0 dB 5 View
3 days ago NODEINFO_APP 018-R01-GT-8 πŸ—Ό (c835) Ocean-GW-8πŸ‡΅πŸ‡Ή (e78c) -70 dBm 5.75 dB 3 View
3 days ago POSITION_APP CT2IUL-8 AJUDA MONSANTO (1d04) Broadcast (ffff) -128 dBm -18.25 dB 2 View
3 days ago POSITION_APP c6bc-8 (c6bc) Broadcast (ffff) -128 dBm -18.0 dB 1 View
3 days ago POSITION_APP CT2IUL-8 AJUDA MONSANTO (1d04) Broadcast (ffff) -69 dBm 6.0 dB 2 View
3 days ago TELEMETRY_APP CT2IUL-8 AJUDA MONSANTO (1d04) Broadcast (ffff) -127 dBm -15.75 dB 3 View
3 days ago POSITION_APP Leoa_VR_MQP-8 (e1b8) Broadcast (ffff) -128 dBm -16.75 dB 2 View
3 days ago UNKNOWN_APP Copeus (0734) AustinPowers (be7a) -68 dBm 6.25 dB 4 View
13 days ago NODEINFO_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Sxl2 (d530) -47 dBm 6.0 dB 0 View
13 days ago TELEMETRY_APP πŸ«†O Gajo Mesh-8 (60d9) Broadcast (ffff) -128 dBm -18.0 dB 4 View
13 days ago POSITION_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -93 dBm 6.0 dB 0 View
15 days ago NODEINFO_APP NMG06-GT-8πŸ‡΅πŸ‡Ή (6ddc) Xento πŸ‡ͺπŸ‡Έ (afc8) -71 dBm 6.25 dB 0 View
15 days ago NODEINFO_APP JD-BRR-GT-8 (f4a5) Xento πŸ‡ͺπŸ‡Έ (afc8) -128 dBm -16.75 dB 1 View
15 days ago POSITION_APP πŸͺͺ CS7ATL#004-8 πŸ‡΅πŸ‡Ή (40ee) Broadcast (ffff) -122 dBm -11.5 dB 0 View
15 days ago POSITION_APP πŸͺͺ CS7ATL#004-8 πŸ‡΅πŸ‡Ή (40ee) Broadcast (ffff) -104 dBm 3.5 dB 0 View
15 days ago POSITION_APP πŸͺͺ CS7ATL#004-8 πŸ‡΅πŸ‡Ή (40ee) Broadcast (ffff) -91 dBm 5.5 dB 0 View
15 days ago UNKNOWN_APP Meshtastic f58c (f58c) Broadcast (ffff) -68 dBm 6.25 dB 2 View
15 days ago POSITION_APP πŸͺͺ CS7ATL#004-8 πŸ‡΅πŸ‡Ή (40ee) Broadcast (ffff) -127 dBm -15.75 dB 1 View
15 days ago POSITION_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -98 dBm 4.5 dB 0 View
15 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -123 dBm -11.75 dB 0 View
15 days ago NODEINFO_APP R3X-GW-8 (9b33) Faisca-Tunes-GT-8 (ace6) -62 dBm 6.5 dB 1 View
15 days ago NODEINFO_APP BRR-SOLAR-GT-8 (0fd2) Faisca-Tunes-GT-8 (ace6) -121 dBm -9.25 dB 1 View
15 days ago NODEINFO_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -82 dBm 6.0 dB 0 View
15 days ago NODEINFO_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -92 dBm 6.75 dB 0 View
15 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -123 dBm -14.25 dB 0 View
15 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -119 dBm -7.5 dB 0 View
15 days ago NODEINFO_APP R3X-GW-8 (9b33) Broadcast (ffff) -125 dBm -14.25 dB 0 View
15 days ago NODEINFO_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -105 dBm 4.0 dB 0 View
15 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -119 dBm -7.75 dB 0 View
15 days ago POSITION_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -93 dBm 5.0 dB 0 View
15 days ago NODEINFO_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -94 dBm 5.5 dB 0 View
15 days ago NODEINFO_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) irOn-GW-8 (9174) -119 dBm -8.5 dB 0 View
15 days ago POSITION_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -65 dBm 5.5 dB 1 View
15 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -120 dBm -8.25 dB 0 View
15 days ago POSITION_APP Meshtastic 09e9 πŸ‡΅πŸ‡Ή (09e9) Broadcast (ffff) -128 dBm -19.0 dB 2 View
15 days ago TRACEROUTE_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) DΞLTΞ”-MGØ1-CL-8 (b704) -120 dBm -8.25 dB 0 View
15 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -120 dBm -8.25 dB 0 View
15 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -125 dBm -14.25 dB 0 View
15 days ago NODEINFO_APP NMG06-GT-8πŸ‡΅πŸ‡Ή (6ddc) Broadcast (ffff) -74 dBm 6.0 dB 0 View
16 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -121 dBm -9.25 dB 0 View
16 days ago NODEINFO_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) ODV-Ramada-GW-8πŸ‡΅πŸ‡Ή (891c) -114 dBm -3.0 dB 0 View
16 days ago NODEINFO_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -123 dBm -11.75 dB 0 View
16 days ago POSITION_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -97 dBm 5.0 dB 0 View
16 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -123 dBm -12.0 dB 0 View
16 days ago UNKNOWN_APP NMG03-8πŸ‡΅πŸ‡Ή (7919) Broadcast (ffff) -66 dBm 5.5 dB 1 View
16 days ago NODEINFO_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -91 dBm 5.75 dB 0 View
16 days ago POSITION_APP Meshtastic 06d8 (06d8) Broadcast (ffff) -90 dBm 5.75 dB 0 View
16 days ago POSITION_APP NYNOR_8704_CL-868 (8704) Broadcast (ffff) -128 dBm -20.25 dB 4 View
16 days ago TELEMETRY_APP NOX-CL-868 (badc) Broadcast (ffff) -125 dBm -13.0 dB 2 View
16 days ago POSITION_APP CT2IUL-8 Almada πŸ‡΅πŸ‡Ή (1bac) Broadcast (ffff) -124 dBm -13.0 dB 0 View
Packet D3D0 NMG4 NMG3 CAFC 8e80 VP f58c Count
c9e21fa0 - 0 - - - - - 1
43e26f96 0 - - - - - - 1
f9d4578f 0 - - - - - - 1
34008f78 0 - - - - - - 1
f40d2361 0 - - - - - - 1
e7f2ef34 0 - - - - - - 1
a3dd3f07 0 - - - - - - 1
4ba442e5 0 - - - - - - 1
cd36e6e3 - - - - - - 4 1
aa900ee2 - - - 2 - - - 1
a94c1ade - - - - 2 - - 1
aa3232dd - - - - - 2 - 1
b1ba16dc - - - 2 - - - 1
80fef6da - - - 2 - - - 1
6df276d8 - - 1 - - - - 1
fd50f2d7 - - - 1 - - - 1
a9190ad4 - - - 1 - - - 1
992496d2 - - - 1 - - - 1
06d8ead1 - - 0 - - - - 1
367fa6d0 - - 0 - - - - 1
Received Gateways
Gateways that have received packets from this node
D3D0-GT-8πŸ‡΅πŸ‡Ή (6de0) Direct
Packets: 358
Hops: 0
Last: 3 hours ago
Direct: 358 pkts
NMG03-8πŸ‡΅πŸ‡Ή (7919) Direct
Packets: 22
Hops: 0-1
Last: 1 day ago
Direct: 16 pkts
RSSI: -55.4 dBm
SNR: 8.0 dB
NMG04-C-8πŸ‡΅πŸ‡Ή (1e9c) Direct
Packets: 1
Hops: 0
Last: 1 hour ago
Direct: 1 pkts
RSSI: -30.0 dBm
SNR: 6.0 dB
!da82ebd0 (ebd0) Direct
Packets: 1
Hops: 0
Last: 5 days ago
Direct: 1 pkts
RSSI: -129.0 dBm
SNR: -5.5 dB
CasaAmarelaForteDaCasa-GW-8 (98fa)
Packets: 61
Hops: 1-4
Last: 9 hours ago
RSSI: -106.9 dBm
SNR: -10.0 dB
irOn-GW-8 (9174)
Packets: 12
Hops: 1-2
Last: 4 days ago
RSSI: -116.2 dBm
SNR: -11.4 dB
!435c29b4 (29b4)
Packets: 10
Hops: 2-4
Last: 2 days ago
RSSI: -104.9 dBm
SNR: -1.7 dB
TabH3-8 (8e80)
Packets: 7
Hops: 2-3
Last: 19 hours ago
RSSI: -114.4 dBm
SNR: -13.3 dB
SC0UT-8 (29a0)
Packets: 5
Hops: 1-4
Last: 1 day ago
RSSI: -107.0 dBm
SNR: -14.8 dB
VP-CL-8πŸ‡΅πŸ‡Ή (a58c)
Packets: 4
Hops: 2-3
Last: 20 hours ago
RSSI: -119.8 dBm
SNR: -6.2 dB
Alzira-8 (2bd0)
Packets: 3
Hops: 3-4
Last: 9 days ago
RSSI: -105.3 dBm
SNR: -10.3 dB
☣️JHR#3-CL-8 (5d30)
Packets: 2
Hops: 2
Last: 7 days ago
RSSI: -123.0 dBm
SNR: -12.6 dB
ODV-Ramada-GW-8πŸ‡΅πŸ‡Ή (891c)
Packets: 1
Hops: 4
Last: 5 days ago
RSSI: -108.0 dBm
SNR: -12.0 dB
Montijo rud 868 web (af7c)
Packets: 1
Hops: -1
Last: 5 days ago
RSSI: -129.0 dBm
SNR: -5.5 dB
NOQ-GW-8 (e7ec)
Packets: 1
Hops: 3
Last: 19 days ago
RSSI: -44.0 dBm
SNR: 6.8 dB