Antennas RPSMA PLUG 1W 50 OHM DUAL BAND
ST0226-30-502-A
Amphenol RF
1:
6,89 €
86 In Stock
Mouser Part No
523-ST022630502A
Amphenol RF
Antennas RPSMA PLUG 1W 50 OHM DUAL BAND
86 In Stock
1
6,89 €
10
5,32 €
25
4,94 €
100
4,50 €
250
View
250
4,30 €
500
4,24 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
Indoor Antennas
2.4 GHz
5.85 GHz
WiFi
Whip
Swivel
3.4 dB
50 Ohms
1 W
- 40 C
+ 85 C
Monopole
2 Band
SMA Male
RP-SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
109 mm
Bulk
Antennas SMA PLUG 2W 50 OHM DUAL BAND
ST0228-30-001-A
Amphenol RF
1:
7,95 €
166 In Stock
Mouser Part No
523-ST022830001A
Amphenol RF
Antennas SMA PLUG 2W 50 OHM DUAL BAND
166 In Stock
1
7,95 €
10
6,17 €
25
5,74 €
250
4,98 €
500
4,97 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
Indoor Antennas
2.4 GHz
5.85 GHz
WiFi
Whip
Swivel
4.9 dB
50 Ohms
2 W
- 40 C
+ 85 C
Monopole
2 Band
SMA Male
SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
196 mm
Bulk
Antennas SMA PLUG 2W 50 OHM DUAL BAND
ST0228-30-002-A
Amphenol RF
1:
8,20 €
138 In Stock
Mouser Part No
523-ST022830002A
Amphenol RF
Antennas SMA PLUG 2W 50 OHM DUAL BAND
138 In Stock
1
8,20 €
10
6,38 €
25
5,93 €
100
5,42 €
250
View
250
5,17 €
500
4,89 €
1.000
4,83 €
5.000
Quote
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
Indoor Antennas
2.4 GHz
5.85 GHz
WiFi
Whip
Swivel
4.4 dB
50 Ohms
2 W
- 40 C
+ 85 C
Monopole
2 Band
SMA Male
SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
109 mm
Bulk
Antennas SMA PLUG 2W 50 OHM DUAL BAND
ST0228-30-501-A
Amphenol RF
1:
7,95 €
187 In Stock
Mouser Part No
523-ST022830501A
Amphenol RF
Antennas SMA PLUG 2W 50 OHM DUAL BAND
187 In Stock
1
7,95 €
10
6,17 €
25
5,74 €
100
5,25 €
250
View
250
4,98 €
500
4,97 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
Indoor Antennas
2.4 GHz
5.85 GHz
WiFi
Whip
Swivel
4.9 dB
50 Ohms
2 W
- 40 C
+ 85 C
Monopole
2 Band
SMA Male
RP-SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
196 mm
Bulk
Antennas External Antenna 1575.42, 1602 MHz SMA Plug GNSS, GPS, GLONASS GNSS
ST0326-41-001-A
Amphenol RF
1:
17,78 €
95 In Stock
Mouser Part No
523-ST032641001A
Amphenol RF
Antennas External Antenna 1575.42, 1602 MHz SMA Plug GNSS, GPS, GLONASS GNSS
95 In Stock
1
17,78 €
10
14,21 €
25
13,31 €
100
12,32 €
250
View
250
11,09 €
500
10,95 €
Buy
Min.: 1
Mult.: 1
Details
GNSS Antennas - GPS, GLONASS, Galileo, Beidou
Indoor Antennas
1.575 GHz
1.602 GHz
GPS, GLONASS
Whip
Straight
28 dB
50 Ohms
2
- 40 C
+ 85 C
Patch
2 Band
SMA Male
SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
50 mm
IPX7
RG-174
Bulk
Antennas I Bar Antenna 698-960, 1710-2170, 2300-2690 MHz RP-SMA Plug WWAN, 4G, ISM, IoT WWAN, IoT, ISM, NB-IoT
ST0330-31-502-A
Amphenol RF
1:
14,55 €
70 In Stock
Mouser Part No
523-ST033031502A
Amphenol RF
Antennas I Bar Antenna 698-960, 1710-2170, 2300-2690 MHz RP-SMA Plug WWAN, 4G, ISM, IoT WWAN, IoT, ISM, NB-IoT
70 In Stock
1
14,55 €
10
11,38 €
25
11,08 €
100
10,62 €
Buy
Min.: 1
Mult.: 1
Details
Cellular Antennas - GSM, LTE, 2G/3G/4G/5G
Indoor Antennas
690 MHz
2.7 GHz
4G LTE
Whip
I-Bar
2.1 dB
50 Ohms
2 W
- 40 C
+ 85 C
Dipole
3 Band
SMA Male
RP-SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
115 mm
Bulk
Antennas AMC PLUG 1W 50 OHM WIDE BAND
ST0425-20-401-A
Amphenol RF
1:
4,30 €
425 In Stock
Mouser Part No
523-ST042520401A
Amphenol RF
Antennas AMC PLUG 1W 50 OHM WIDE BAND
425 In Stock
1
4,30 €
10
3,23 €
25
2,98 €
100
2,70 €
250
2,69 €
Buy
Min.: 1
Mult.: 1
Details
Cellular Antennas - GSM, LTE, 2G/3G/4G/5G
PCB Antennas
Sleeve
698 MHz
5 GHz
4G/5G, NBIoT, LTE
PCB Trace
2.1 dBi, 3.3 dBi, 4.2 dBi
50 Ohms
1 W
- 40 C
+ 85 C
13 Band
Adhesive Mount
Connector
I-PEX MHF 1
4G LTE and 5G NR Mesh, CPE - Gateway, Router and Set-Top Boxes, IoT Devices, Robotics, Smart Metering
90 mm
15 mm
0.85 mm
1.37 mm
Bulk
Antennas External Antenna, 698-960 1710-2170 2300-2690 3300-5000 5150-5925 MHz WWAN, 4G, 5G, ISM, IoT, V2X, DSRC, WWAN, IoT, ISM, NB-IoT
ST0428-40-001-B
Amphenol RF
1:
6,43 €
318 In Stock
Mouser Part No
523-ST042840001B
Amphenol RF
Antennas External Antenna, 698-960 1710-2170 2300-2690 3300-5000 5150-5925 MHz WWAN, 4G, 5G, ISM, IoT, V2X, DSRC, WWAN, IoT, ISM, NB-IoT
318 In Stock
1
6,43 €
10
4,95 €
25
4,58 €
100
4,07 €
250
3,72 €
Buy
Min.: 1
Mult.: 1
Details
Cellular Antennas - GSM, LTE, 2G/3G/4G/5G
Outdoor Antennas
698 MHz
5.925 GHz
4.8 dBi
50 Ohms
1 W
- 30 C
+ 75 C
5 Band
Connector
RP-SMA Male
IoT Devices, Robotics
222 mm
Bulk
Antennas RPSMA PLUG 10W 50 OHM WIDE BND
ST0457-20-501-A
Amphenol RF
1:
10,62 €
493 In Stock
Mouser Part No
523-ST045720501A
Amphenol RF
Antennas RPSMA PLUG 10W 50 OHM WIDE BND
493 In Stock
1
10,62 €
10
8,50 €
25
7,83 €
100
7,44 €
Buy
Min.: 1
Mult.: 1
Details
Cellular Antennas - GSM, LTE, 2G/3G/4G/5G
Indoor Antennas
690 MHz
3.8 GHz
4G LTE
Whip
Swivel
6.6 dB
50 Ohms
10 W
- 40 C
+ 85 C
Monopole
9 Band
SMA Male
RP-SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
71.5 mm
Bulk
Antennas GPS + GLONASS Passive GNSS, GPS, GLONASS GNSS
ST0543-00-N06-U
Amphenol RF
1:
3,07 €
748 In Stock
Mouser Part No
523-ST054300N06U
Amphenol RF
Antennas GPS + GLONASS Passive GNSS, GPS, GLONASS GNSS
748 In Stock
1
3,07 €
10
2,30 €
25
2,11 €
100
1,90 €
250
View
250
1,80 €
500
1,71 €
1.000
1,54 €
2.500
1,51 €
Buy
Min.: 1
Mult.: 1
Details
GNSS Antennas - GPS, GLONASS, Galileo, Beidou
PCB Antennas
Patch
GPS, GLONASS
8 MHz
50 Ohms
- 40 C
+ 105 C
2 Band
SMD/SMT
Connector
1.575 GHz, 1.602 GHz
25.1 mm
25.1 mm
4 mm
Tray
Antennas External Antenna, 915MHz IoT, ISM, LoRa, RFID, LPWAN
ST0626-41-301-B
Amphenol RF
1:
70,55 €
9 In Stock
Mouser Part No
523-ST062641301B
Amphenol RF
Antennas External Antenna, 915MHz IoT, ISM, LoRa, RFID, LPWAN
9 In Stock
1
70,55 €
10
52,89 €
25
50,53 €
100
50,27 €
Buy
Min.: 1
Mult.: 1
Details
IoT Antennas - LPWAN, LoRaWAN, Sigfox, NB-IoT
Outdoor Antennas
902 MHz
928 MHz
2.5 dBi
50 Ohms
200 W
- 40 C
+ 60 C
1 Band
Connector
N-Type Plug
IoT Devices, LoRa, Remote Monitoring
222 mm
IP67
Bulk
Antennas External Antenna, 868MHz IoT, ISM, LoRa, RFID, LPWAN
ST0626-41-302-B
Amphenol RF
1:
69,02 €
7 In Stock
Mouser Part No
523-ST062641302B
Amphenol RF
Antennas External Antenna, 868MHz IoT, ISM, LoRa, RFID, LPWAN
7 In Stock
1
69,02 €
10
52,79 €
25
49,25 €
100
49,00 €
Buy
Min.: 1
Mult.: 1
Details
IoT Antennas - LPWAN, LoRaWAN, Sigfox, NB-IoT
Indoor Antennas
863 MHz
873 MHz
2.2 dBi
50 Ohms
200 W
- 40 C
+ 60 C
1 Band
Connector
N-Type Plug
IoT Devices, LoRa, Remote Monitoring
240.6 mm
IP67
Bulk
Antennas External Antenna, 915MHz IoT, ISM, LoRa, RFID, LPWAN
ST0628-30-001-A
Amphenol RF
1:
6,89 €
189 In Stock
Mouser Part No
523-ST062830001A
Amphenol RF
Antennas External Antenna, 915MHz IoT, ISM, LoRa, RFID, LPWAN
189 In Stock
1
6,89 €
10
5,32 €
25
4,93 €
100
4,33 €
250
4,02 €
Buy
Min.: 1
Mult.: 1
Details
IoT Antennas - LPWAN, LoRaWAN, Sigfox, NB-IoT
Outdoor Antennas
868 MHz
915 MHz
2.4 dBi
50 Ohms
1 W
- 40 C
+ 70 C
1 Band
Connector
SMA Male
IoT Devices, LoRa, Remote Monitoring
160 mm
Bulk
Antennas External Antenna, 868-876 902-928 MHz IoT, ISM, LoRa, RFID, LPWAN
ST0628-40-501-B
Amphenol RF
1:
6,31 €
275 In Stock
Mouser Part No
523-ST062840501B
Amphenol RF
Antennas External Antenna, 868-876 902-928 MHz IoT, ISM, LoRa, RFID, LPWAN
275 In Stock
1
6,31 €
10
5,06 €
25
4,53 €
100
4,10 €
250
View
250
3,72 €
500
3,66 €
Buy
Min.: 1
Mult.: 1
Details
IoT Antennas - LPWAN, LoRaWAN, Sigfox, NB-IoT
Outdoor Antennas
860 MHz
928 MHz
3 dBi
50 Ohms
1 W
- 30 C
+ 75 C
2 Band
Connector
RP-SMA Male
IoT Devices, LoRa, Remote Monitoring
222 mm
Bulk
Antennas Wi-Fi 6E 2400-2500, 5150-7125 MHz FPC 30x10, Cable : OD1.37 x 100mm 2.4GHz, 5GHz, 6GHz, Tri-band, Bluetooth, Wi-Fi 6E, WLAN, Zigbee IoT, ISM, UNII
ST1224-10-401-A
Amphenol RF
1:
3,48 €
482 In Stock
Mouser Part No
523-ST122410401A
Amphenol RF
Antennas Wi-Fi 6E 2400-2500, 5150-7125 MHz FPC 30x10, Cable : OD1.37 x 100mm 2.4GHz, 5GHz, 6GHz, Tri-band, Bluetooth, Wi-Fi 6E, WLAN, Zigbee IoT, ISM, UNII
482 In Stock
1
3,48 €
10
2,62 €
25
2,41 €
100
2,18 €
250
View
250
2,06 €
500
1,96 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
PCB Antennas
Dipole
2.4 GHz
7.125 GHz
Bluetooth
WiFi 6E, WLAN
FPC Trace
Flexible Pad
2.1 dBi, 3.1 dBi, 3.6 dBi
50 Ohms
1 W
- 40 C
+ 85 C
3 Band
Adhesive Mount
Connector
I-PEX MHF 1
Industrial IoT, Medical Devices, Quick Service Restaurants, Smart Metering and Utilities
30 mm
10 mm
0.2 mm
1.37 mm
Bulk
Antennas Wi-Fi 6E, PCB 30x7mm, Cable : OD1.37 x 100mm 2.4GHz, 5GHz, 6GHz, Tri-band, Bluetooth, Wi-Fi 6E, WLAN, Zigbee IoT, ISM, UNII
ST1225-10-401-A
Amphenol RF
1:
3,15 €
490 In Stock
Mouser Part No
523-ST122510401A
Amphenol RF
Antennas Wi-Fi 6E, PCB 30x7mm, Cable : OD1.37 x 100mm 2.4GHz, 5GHz, 6GHz, Tri-band, Bluetooth, Wi-Fi 6E, WLAN, Zigbee IoT, ISM, UNII
490 In Stock
1
3,15 €
10
2,37 €
25
2,17 €
100
1,95 €
250
1,94 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
PCB Antennas
Dipole
2.4 GHz
7.125 GHz
Bluetooth
WiFi 6E, WLAN
PCB Trace
2.6 dBi, 4.1 dBi
50 Ohms
1 W
- 40 C
+ 85 C
3 Band
Adhesive Mount
Connector
I-PEX MHF 1
Industrial IoT, Medical Devices, Quick Service Restaurants, Smart Metering and Utilities
30 mm
7 mm
0.85 mm
1.37 mm
Bulk
Antennas PCB Antenna 2400-2500, 5150-7125 MHz AMC 2.4GHz, 5GHz, 6GHz, Tri-band, Bluetooth, Wi-Fi 6E, WLAN, Zigbee IoT, ISM, UNII
ST1225-20-001-A
Amphenol RF
1:
3,99 €
472 In Stock
Mouser Part No
523-ST122520001A
Amphenol RF
Antennas PCB Antenna 2400-2500, 5150-7125 MHz AMC 2.4GHz, 5GHz, 6GHz, Tri-band, Bluetooth, Wi-Fi 6E, WLAN, Zigbee IoT, ISM, UNII
472 In Stock
1
3,99 €
10
2,91 €
25
2,67 €
100
2,43 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
PCB Antennas
Dipole
2.4 GHz
7.125 GHz
Bluetooth
WiFi 6E, WLAN
PCB Trace
3.4 dBi, 4 dBi, 4.2 dBi
50 Ohms
1 W
- 40 C
+ 65 C
3 Band
Adhesive Mount
Connector
I-PEX MHF 1
Industrial IoT, Medical Devices, Quick Service Restaurants, Smart Metering and Utilities
50.4 mm
13.8 mm
0.7 mm
1.13 mm
Bulk
Antennas SMA PLUG 1W 50 OHM SINGLE BAND
ST1226-20-001-A
Amphenol RF
1:
4,21 €
97 In Stock
Mouser Part No
523-ST122620001A
Amphenol RF
Antennas SMA PLUG 1W 50 OHM SINGLE BAND
97 In Stock
1
4,21 €
10
3,19 €
25
2,94 €
100
2,66 €
250
View
250
2,53 €
500
2,42 €
1.000
2,38 €
2.500
2,31 €
5.000
2,28 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
Indoor Antennas
2.4 GHz
2.5 GHz
WiFi
Whip
Stick
1.5 dBi
50 Ohms
1 W
- 40 C
+ 85 C
Dipole
1 Band
SMA Male
SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
51 mm
Bulk
Antennas RPSMA PLUG 1W 50 OHM SNGL BND
ST1226-20-501-A
Amphenol RF
1:
4,00 €
512 In Stock
Mouser Part No
523-ST122620501A
Amphenol RF
Antennas RPSMA PLUG 1W 50 OHM SNGL BND
512 In Stock
1
4,00 €
10
3,04 €
25
2,80 €
100
2,54 €
250
View
250
2,41 €
500
2,34 €
1.000
2,32 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
Indoor Antennas
2.4 GHz
2.5 GHz
WiFi
Whip
Stick
1.5 dBi
50 Ohms
1 W
- 40 C
+ 85 C
Dipole
1 Band
SMA Male
RP-SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
51 mm
Bulk
Antennas RPSMA PLUG 5W 50 OHM MULTI BND
ST1226-30-501-A
Amphenol RF
1:
15,34 €
107 In Stock
Mouser Part No
523-ST122630501A
Amphenol RF
Antennas RPSMA PLUG 5W 50 OHM MULTI BND
107 In Stock
1
15,34 €
10
12,18 €
25
11,39 €
100
10,52 €
250
View
250
9,72 €
500
9,61 €
1.000
9,51 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
Indoor Antennas
2.4 GHz
7.2 GHz
WiFi 6E
Whip
Swivel
5.1 dB
50 Ohms
5 W
- 40 C
+ 85 C
Monopole
3 Band
SMA Male
RP-SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
136 mm
Bulk
Antennas SMA PLUG 2W 50 OHM WIDE BAND
ST1326-30-001-A
Amphenol RF
1:
7,36 €
218 In Stock
Mouser Part No
523-ST132630001A
Amphenol RF
Antennas SMA PLUG 2W 50 OHM WIDE BAND
218 In Stock
1
7,36 €
10
5,70 €
25
5,29 €
100
4,83 €
250
View
250
4,61 €
500
4,10 €
1.000
4,00 €
Buy
Min.: 1
Mult.: 1
Details
Cellular Antennas - GSM, LTE, 2G/3G/4G/5G
Indoor Antennas
690 MHz
5.85 GHz
4G LTE, 5G NR
Whip
Swivel
5.1 dB
50 Ohms
2 W
- 40 C
+ 85 C
Monopole
16 Band
SMA Male
SMA Plug
CPE - Router, Set-top boxes & Gateway, IoT devices, Robotics, Smart Metering
151 mm
Bulk
Antennas Chip Antenna 2400-2500 MHz SMT, 5mm x 2mm x 1mm 2.4GHz, Bluetooth, Wi-Fi, WLAN, Zigbee
ST0147-00-010-A
Amphenol RF
1:
1,26 €
59 In Stock
Mouser Part No
523-ST014700010A
Amphenol RF
Antennas Chip Antenna 2400-2500 MHz SMT, 5mm x 2mm x 1mm 2.4GHz, Bluetooth, Wi-Fi, WLAN, Zigbee
59 In Stock
1
1,26 €
10
0,92 €
25
0,838 €
100
0,743 €
250
View
250
0,708 €
500
0,689 €
1.000
0,656 €
2.500
0,638 €
5.000
0,624 €
Buy
Min.: 1
Mult.: 1
Details
2.4GHz Antenna - 2.4GHz, 5GHz, Bluetooth, WiFi, WLAN, Zigbee
PCB Antennas
Chip Antenna
2.4 GHz
2.5 GHz
Bluetooth, BLE
3.3 dB
50 Ohms
2 W
- 40 C
+ 85 C
1 Band
PCB Mount
Solder
5 mm
2 mm
1 mm
Bulk
Antennas RF Antenna External Dual Band Wi-Fi 6 2400 MHz - 5825 MHz
ST0226-10-501-A
Amphenol RF
1.800:
1,94 €
Non-Stocked Lead-Time 10 Weeks
Mouser Part No
523-ST0226-10-501-A
Amphenol RF
Antennas RF Antenna External Dual Band Wi-Fi 6 2400 MHz - 5825 MHz
Non-Stocked Lead-Time 10 Weeks
Buy
Min.: 1.800
Mult.: 600
Details
GNSS Antennas - GPS, GLONASS, Galileo, Beidou
Indoor Antennas
2.4 GHz
5.825 GHz
2.5 dBi
50 Ohms
1 W
- 20 C
+ 70 C
Chip
2 Band
Connector
RP-SMA Male
Bulk
Antennas IP 66 RF Antenna External Wide Band IoT 698 MHz - 5825 MHz
ST0428-41-001-A
Amphenol RF
400:
23,84 €
Non-Stocked Lead-Time 10 Weeks
Mouser Part No
523-ST0428-41-001-A
Amphenol RF
Antennas IP 66 RF Antenna External Wide Band IoT 698 MHz - 5825 MHz
Non-Stocked Lead-Time 10 Weeks
Buy
Min.: 400
Mult.: 400
Details
Cellular Antennas - GSM, LTE, 2G/3G/4G/5G
Indoor Antennas
698 MHz
5.825 GHz
4.7 dBi
50 Ohms
1 W
- 40 C
+ 70 C
5 Band
Connector
SMA Male
IP66
Bulk
Antennas IP 67 RF Antenna External Wide Band IoT 698 MHz - 5000 MHz
ST0430-31-001-A
Amphenol RF
200:
23,84 €
Non-Stocked Lead-Time 10 Weeks
Mouser Part No
523-ST0430-31-001-A
Amphenol RF
Antennas IP 67 RF Antenna External Wide Band IoT 698 MHz - 5000 MHz
Non-Stocked Lead-Time 10 Weeks
Buy
Min.: 200
Mult.: 200
Details
Cellular Antennas - GSM, LTE, 2G/3G/4G/5G
Outdoor Antennas
698 MHz
5 GHz
Bar
4.8 dBi
50 Ohms
1 W
- 40 C
+ 85 C
5 Band
Adhesive Mount
Connector
SMA Male
105.1 mm
30.1 mm
7.9 mm
IP67
RG-174
Bulk