.hide-partial { max-height: none; } .show-more { display: none; }

450 MHz Antennas

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 141

Applied Filters:

Minimum Frequency = 450 MHz

Manufacturer

Product Type

Product

Type

Maximum Frequency

Protocol - Bluetooth, BLE - 802.15.1

Protocol - Cellular, NBIoT, LTE

Protocol - GPS, GLONASS

Protocol - WiFi - 802.11

Protocol - ANT, Thread, Zigbee - 802.15.4

Protocol - Sub GHz

Mechanical Style

Style

Gain

Bandwidth

Impedance

VSWR

Power Rating

Minimum Operating Temperature

Maximum Operating Temperature

Electrical Type

Number of Bands

Mounting Style

Termination Style

Antenna Connector Type

Centre Frequency

Application

Length

Width

Height

IP Rating

Cable Type

Series

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (IDR) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Product	Type	Minimum Frequency	Maximum Frequency	Protocol - Cellular, NBIoT, LTE	Protocol - WiFi - 802.11	Protocol - Sub GHz	Mechanical Style	Style	Gain	Bandwidth	Impedance	VSWR	Power Rating	Minimum Operating Temperature	Maximum Operating Temperature	Electrical Type	Number of Bands	Mounting Style	Termination Style	Antenna Connector Type	Centre Frequency	Application	Length	Width	Height	IP Rating	Cable Type	Series	Packaging
Antennas SENCITY Rail Antenna K702061 HUBER+SUHNER 1: Rp6.160.770 8In Stock	Mfr. Part No. K702061 Mouser Part No 455-84460326	HUBER+SUHNER	Antennas SENCITY Rail Antenna Learn More about HUBER+SUHNER huber suhner kathrein antennas	Datasheet	8In Stock	Rp6.160.770 Rp5.447.111 Rp5.356.849	Min.: 1 Mult.: 1	Cellular Antennas - GSM, LTE, 2G/3G/4G/5G	Outdoor Antennas	Passive Antenna	450 MHz	960 MHz	Cellular (NBIoT, LTE), TETRA			Module	Dome	3.5 dBi, 4 dBi		50 Ohms	1.4, 1.5		- 40 C	+ 85 C		2 Band	Screw	Connector	N Female	460 MHz, 875 MHz	Rail, Railway Rooftop	80 mm	145 mm	142 mm	IP66		Rail
Antennas AntIn-Bldg450-490MHzUHFDAS PSIBUHF Pulse Electronics 1: Rp3.248.710 17In Stock	Mfr. Part No. PSIBUHF Mouser Part No 673-PSIBUHF	Pulse Electronics	Antennas AntIn-Bldg450-490MHzUHFDAS	Datasheet	17In Stock	Rp3.248.710 Rp2.840.878 Rp2.611.186 View Quote	Min.: 1 Mult.: 1	ISM Antennas - ISM, MICS, UHF, VHF, UWB	Indoor Antennas	Passive Antenna	450 MHz	490 MHz			UHF	Module	Panel	4.5 dB		50 Ohms	2:1	6 W	- 40 C	+ 85 C		1 Band	Ceiling Mount	Connector	N Female	460 MHz	In-building Repeater Systems, Public Safety, Multi-floor Coverage	400 mm	400 mm	1.5 mm		500 mm RG402		Bulk
Antennas WIRELESS EXTERNAL OUTDOOR WHIP NMO4503CS Pulse Electronics 1: Rp1.742.136 19In Stock	Mfr. Part No. NMO4503CS Mouser Part No 673-NMO4503CS	Pulse Electronics	Antennas WIRELESS EXTERNAL OUTDOOR WHIP	Datasheet	19In Stock	Rp1.742.136 Rp1.406.771 Quote Quote	Min.: 1 Mult.: 1	ISM Antennas - ISM, MICS, UHF, VHF, UWB	Outdoor Antennas	Passive Antenna	450 MHz	470 MHz			UHF	Whip	Straight with Base	3 dB		50 Ohms	2:01	200 W				1 Band	NMO Mount	Connector	NMO	460 MHz	LMR, Public Safety, M2M							Bulk
Antennas Barracuda OMB.450.B03F21 450-470MHz 3dBi Omnidirectional Outdoor Antenna OMB.450.B03F21 Taoglas 1: Rp1.625.089 49In Stock	Mfr. Part No. OMB.450.B03F21 Mouser Part No 960-OMB.450.B03F21	Taoglas	Antennas Barracuda OMB.450.B03F21 450-470MHz 3dBi Omnidirectional Outdoor Antenna Learn More about Taoglas barracuda omnidirectional antennas	Datasheet	49In Stock	Rp1.625.089 Rp1.410.074 Rp1.202.397	Min.: 1 Mult.: 1	ISM Antennas - ISM, MICS, UHF, VHF, UWB	Outdoor Antennas		450 MHz	470 MHz	Cellular (NBIoT, LTE)			Collinear	Fiberglass	3 dBi		50 Ohms	1.5:1	100 W	- 40 C	+ 85 C	Dipole Array	1 Band	Bracket Mount	Connector	N Type Female		CDMA, LTE, ISM	523 mm			IP65		Baracuda	Tube
Antennas SENCITY Rail Antenna K702121 HUBER+SUHNER 1: Rp5.473.529 3In Stock	Mfr. Part No. K702121 Mouser Part No 455-K702121	HUBER+SUHNER	Antennas SENCITY Rail Antenna	Datasheet	3In Stock	Rp5.473.529 Rp4.802.432 Rp4.720.976	Min.: 1 Mult.: 1		Outdoor Antennas	Rooftop Antenna	450 MHz	470 MHz						3 dBi		50 Ohms	1.6		- 40 C	+ 85 C		1 Band	SMD/SMT	N Type Female	N Type Female			80 mm	145 mm	355 mm	IP66		Rail
Antennas Antenna 1/4 Wave Whip 450MHz 1.32 UFL ANT-450-PW-QW-UFL TE Connectivity / Linx Technologies 1: Rp391.137 187In Stock	Mfr. Part No. ANT-450-PW-QW-UFL Mouser Part No 712-ANT-450PW-QW-UFL	TE Connectivity / Linx Technologies	Antennas Antenna 1/4 Wave Whip 450MHz 1.32 UFL Learn More about TE Connectivity / Linx Technologies linx technologies pw antennas	Datasheet	187In Stock	Rp391.137 Rp324.724 Rp275.190 Rp256.110 View Rp230.426 Rp230.242	Min.: 1 Mult.: 1	Cellular Antennas - GSM, LTE, 2G/3G/4G/5G	Outdoor Antennas	Monopole	450 MHz	470 MHz	Cellular (NBIoT, LTE), GSM			Whip	Straight	- 1.7 dBi		50 Ohms	1.3	10 W	- 40 C	+ 90 C		1 Band	Connector	Connector	MHF / U.FL	460 MHz	Handheld Device	167 mm				216 mm RF1.32	PW	Bulk
Antennas Antenna Short Straight 450-470MHz SMA ANT-450-RHS-SMA TE Connectivity / Linx Technologies 1: Rp167.866 820In Stock	Mfr. Part No. ANT-450-RHS-SMA Mouser Part No 712-ANT-450-RHS-SMA	TE Connectivity / Linx Technologies	Antennas Antenna Short Straight 450-470MHz SMA Learn More about TE Connectivity / Linx Technologies linx ant 450 rhr lte antennas	Datasheet	820In Stock	Rp167.866	Min.: 1 Mult.: 1	Cellular Antennas - GSM, LTE, 2G/3G/4G/5G	Outdoor Antennas	Dipole	450 MHz	470 MHz	Cellular (NBIoT, LTE), GSM			Whip	Stubby	- 13.2 dBi		50 Ohms	2.1	10 W	- 20 C	+ 85 C		1 Band	Panel Mount	Connector	SMA Male	460 MHz	Cellular IoT	51.8 mm	18.2 mm	9 mm			RHR	Bulk
Antennas Antenna 1/4 Wave Whip 450MHz RG174 ANT-450-PW-QW TE Connectivity / Linx Technologies 1: Rp373.708 236In Stock	Mfr. Part No. ANT-450-PW-QW Mouser Part No 712-ANT-450-PW-QW	TE Connectivity / Linx Technologies	Antennas Antenna 1/4 Wave Whip 450MHz RG174 Learn More about TE Connectivity / Linx Technologies linx technologies pw antennas	Datasheet	236In Stock	Rp373.708 Rp267.852 Rp249.689 Rp234.095 Rp204.925	Min.: 1 Mult.: 1	Cellular Antennas - GSM, LTE, 2G/3G/4G/5G	Outdoor Antennas	Monopole	450 MHz	470 MHz	Cellular (NBIoT, LTE), GSM			Whip	Straight	- 1.7 dBi		50 Ohms	1.3	10 W	- 40 C	+ 90 C		1 Band	Connector	Connector		460 MHz	Handheld Device	167 mm				216 mm RG174	PW	Bulk
Antennas ANT. LPT NMO 450-470MHz Pulse Electronics LPT450NMO LPT450NMO Pulse Electronics 1: Rp1.341.826 22In Stock	Mfr. Part No. LPT450NMO Mouser Part No 673-LPT450NMO	Pulse Electronics	Antennas ANT. LPT NMO 450-470MHz	Datasheet	22In Stock	Rp1.341.826 Rp1.177.997 Rp1.018.570 Rp964.449 View Quote	Min.: 1 Mult.: 1	ISM Antennas - ISM, MICS, UHF, VHF, UWB			450 MHz	470 MHz																										Bulk
Antennas RADIAL BS-WHP 4.5DB 450-47 NPB Pulse Electronics BSA450C BSA450C Pulse Electronics 1: Rp2.877.203 17In Stock	Mfr. Part No. BSA450C Mouser Part No 673-BSA450C	Pulse Electronics	Antennas RADIAL BS-WHP 4.5DB 450-47 NPB	Datasheet	17In Stock	Rp2.877.203 Rp2.269.584 View Quote	Min.: 1 Mult.: 1	ISM Antennas - ISM, MICS, UHF, VHF, UWB			450 MHz	470 MHz																										Bulk
Antennas DUAL BAND 450/900 MHz ANTENNA L000633-01 TE Connectivity 1: Rp14.334.280 7In Stock New Product	Mfr. Part No. L000633-01 Mouser Part No 571-L000633-01 New Product	TE Connectivity	Antennas DUAL BAND 450/900 MHz ANTENNA Learn More about TE Connectivity te l000633 01 omnidirectional antenna	Datasheet	7In Stock	Rp14.334.280 Rp13.751.061	Min.: 1 Mult.: 1		Outdoor Antennas	Antenna	450 MHz	941 MHz						7.5 dBi		50 Ohms	2.0:1	4 W	- 40 C	+ 60 C		2 Band	Mast Mount		N Type Female					2018 mm	IP56
Antennas TRANSIT ANT MHZ 450-470 ASP772 PCTEL / Amphenol 1: Rp1.324.031 36In Stock New Product	Mfr. Part No. ASP772 Mouser Part No 72-ASP772 New Product	PCTEL / Amphenol	Antennas TRANSIT ANT MHZ 450-470	Datasheet	36In Stock	Rp1.324.031 Rp1.091.587 Rp1.044.988 Rp1.017.836 View Quote	Min.: 1 Mult.: 1		Indoor Antennas	Whipless Antenna	450 MHz	470 MHz							20 MHz	50 Ohms	2.0:1	100 W				1 Band	Panel Mount		BNC Female			8 in	3.5 in	3.4 in			TRANSIT
Antennas 450-470,7.1DB,3 ELE YAGI,N,CHR MYA4503N PCTEL / Amphenol 1: Rp1.542.899 5In Stock New Product	Mfr. Part No. MYA4503N Mouser Part No 72-MYA4503N New Product	PCTEL / Amphenol	Antennas 450-470,7.1DB,3 ELE YAGI,N,CHR	Datasheet	5In Stock	Rp1.542.899 Rp1.215.789 Rp1.166.072 Rp1.118.556 View Quote	Min.: 1 Mult.: 1	Multiprotocol Antennas	Outdoor Antennas		450 MHz	470 MHz		ISM				9.2 dBi	20 MHz	50 Ohms	1.5:1	300 W				1 Band	Bracket Mount		N Female
Antennas TRANSIT ANT MHZ 450-470 ASP572 PCTEL / Amphenol 1: Rp1.387.508 9In Stock 20Expected 05/10/2026 New Product	Mfr. Part No. ASP572 Mouser Part No 72-ASP572 New Product	PCTEL / Amphenol	Antennas TRANSIT ANT MHZ 450-470	Datasheet	9In Stock 20Expected 05/10/2026	Rp1.387.508 Rp1.139.470 Rp1.088.835 Rp1.061.683 View Quote	Min.: 1 Mult.: 1		Indoor Antennas	Whipless Antenna	450 MHz	470 MHz							20 MHz	50 Ohms	2.0:1	100 W				1 Band	Panel Mount		UHF Female			8 in	3.5 in	3.13 in			TRANSIT
Antennas 450-460,3DB,FIBERGLASS BASE MFB4503 PCTEL / Amphenol 1: Rp2.461.299 9In Stock New Product	Mfr. Part No. MFB4503 Mouser Part No 72-MFB4503 New Product	PCTEL / Amphenol	Antennas 450-460,3DB,FIBERGLASS BASE	Datasheet	9In Stock	Rp2.461.299 Rp2.169.415 Rp2.049.432	Min.: 1 Mult.: 1		Outdoor Antennas		450 MHz	460 MHz						3 dB	10 MHz	50 Ohms	1.5:1	250 W				1 Band	Wall Mount		N Male								MFB
Antennas 450-470,3DB,CHR MUF4503 PCTEL / Amphenol 1: Rp672.748 23In Stock New Product	Mfr. Part No. MUF4503 Mouser Part No 72-MUF4503 New Product	PCTEL / Amphenol	Antennas 450-470,3DB,CHR	Datasheet	23In Stock	Rp672.748 Rp594.043 Rp541.757 Rp507.267 View Rp473.143 Quote	Min.: 1 Mult.: 1		Outdoor Antennas	Mobile Antenna	450 MHz	470 MHz				Panel Mount	Whip	3 dB		50 Ohms	1.5:1	200 W	- 40 C	+ 85 C		1 Band		Connector									CHROME COIL
Antennas 450-470,3DB,W/SPR,CHR MUF4503S PCTEL / Amphenol 1: Rp894.368 20In Stock 25Expected 16/10/2026 New Product	Mfr. Part No. MUF4503S Mouser Part No 72-MUF4503S New Product	PCTEL / Amphenol	Antennas 450-470,3DB,W/SPR,CHR	Datasheet	20In Stock 25Expected 16/10/2026	Rp894.368 Rp757.323 Rp725.401 Rp660.823 View Rp644.312 Quote	Min.: 1 Mult.: 1		Outdoor Antennas	Mobile Antenna	450 MHz	470 MHz				Panel Mount	Whip	3 dB		50 Ohms	1.5:1	200 W	- 40 C	+ 85 C		1 Band		Connector									CHROME COIL
Antennas 450-470,5DB,CHR MUF4505 PCTEL / Amphenol 1: Rp764.661 46In Stock New Product	Mfr. Part No. MUF4505 Mouser Part No 72-MUF4505 New Product	PCTEL / Amphenol	Antennas 450-470,5DB,CHR	Datasheet	46In Stock	Rp764.661 Rp647.430 Rp632.570 Rp571.294 View Rp558.636 Quote	Min.: 1 Mult.: 1		Outdoor Antennas	Mobile Antenna	450 MHz	470 MHz				Collinear	Whip	5 dB		50 Ohms	1.5:1	200 W	- 40 C	+ 85 C		1 Band	Panel Mount										CHROME COIL
Antennas 450-470,5DB,NGP,CHR MUF4505NGP PCTEL / Amphenol 1: Rp932.894 29In Stock New Product	Mfr. Part No. MUF4505NGP Mouser Part No 72-MUF4505NGP New Product	PCTEL / Amphenol	Antennas 450-470,5DB,NGP,CHR	Datasheet	29In Stock	Rp932.894 Rp795.666 Rp792.914 Rp675.316 Rp648.715	Min.: 1 Mult.: 1		Outdoor Antennas	Mobile Antenna	450 MHz	470 MHz				Collinear	Whip	5 dB		50 Ohms	1.5:1	200 W	- 40 C	+ 85 C		1 Band	Panel Mount										CHROME COIL
Antennas 450-470,5DB,NGP,W/SPR,CHR MUF4505NGPS PCTEL / Amphenol 1: Rp1.237.621 22In Stock New Product	Mfr. Part No. MUF4505NGPS Mouser Part No 72-MUF4505NGPS New Product	PCTEL / Amphenol	Antennas 450-470,5DB,NGP,W/SPR,CHR	Datasheet	22In Stock	Rp1.237.621 Rp1.020.405 Rp970.687 Rp924.638 View Quote	Min.: 1 Mult.: 1		Outdoor Antennas	Mobile Antenna	450 MHz	470 MHz				Collinear	Whip	5 dB		50 Ohms	1.5:1	200 W	- 40 C	+ 85 C		1 Band	Panel Mount										CHROME COIL
Antennas 450-470,5DB,W/SPR,CHR MUF4505S PCTEL / Amphenol 1: Rp984.263 18In Stock New Product	Mfr. Part No. MUF4505S Mouser Part No 72-MUF4505S New Product	PCTEL / Amphenol	Antennas 450-470,5DB,W/SPR,CHR	Datasheet	18In Stock	Rp984.263 Rp833.459 Rp798.418 Rp724.300 View Rp711.091 Quote	Min.: 1 Mult.: 1		Outdoor Antennas	Mobile Antenna	450 MHz	470 MHz				Collinear	Whip	5 dB		50 Ohms	1.5:1	200 W	- 40 C	+ 85 C		1 Band	Panel Mount										CHROME COIL
Antennas 450-470,7.1DB,3 ELEMENT YAGI MYA4503 PCTEL / Amphenol 1: Rp1.400.350 13In Stock New Product	Mfr. Part No. MYA4503 Mouser Part No 72-MYA4503 New Product	PCTEL / Amphenol	Antennas 450-470,7.1DB,3 ELEMENT YAGI	Datasheet	13In Stock	Rp1.400.350 Rp1.181.482 Rp1.135.067 Rp1.065.536	Min.: 1 Mult.: 1		Outdoor Antennas	Aluminum Yagi Antenna	450 MHz	470 MHz				Yagi				50 Ohms		300 W				1 Band		Screw	N Female								MYA
Antennas 450-470, WB NO TUNE, NGP PCTEL / Amphenol MUF4502 MUF4502 PCTEL / Amphenol 1: Rp625.232 49In Stock New Product	Mfr. Part No. MUF4502 Mouser Part No 72-MUF4502 New Product	PCTEL / Amphenol	Antennas 450-470, WB NO TUNE, NGP	Datasheet	49In Stock	Rp625.232 Rp552.215 Rp535.153 Rp472.043 View Rp450.945 Quote	Min.: 1 Mult.: 1		Outdoor Antennas	Chrome Coil Antenna	450 MHz	470 MHz					Whip	2.4 dB		50 Ohms	1.5:1	200 W				1 Band	Screw										CHROME COIL
Antennas LPWA FPC ANT HDP MHF 100mm 450-467 MHz L000606-02 TE Connectivity / Linx Technologies 1: Rp68.064 1.995In Stock	Mfr. Part No. L000606-02 Mouser Part No 712-L000606-02	TE Connectivity / Linx Technologies	Antennas LPWA FPC ANT HDP MHF 100mm 450-467 MHz Learn More about TE Connectivity / Linx Technologies te ism lpwa 410 467mhz fpc antennas	Datasheet	1.995In Stock	Rp68.064 Rp55.588 Quote Quote	Min.: 1 Mult.: 1	ISM Antennas - ISM, MICS, UHF, VHF, UWB	PCB Antennas		450 MHz	467 MHz						3 dBi		50 Ohms	2.2:1					1 Band	Adhesive Mount	Connector	MHF		IoT Applications	92.5 mm	20 mm	0.13 mm		1.13 mm Coax
Antennas LPWA FPC ANT HDP MHF4L 100mm 450-467 MHz L000606-05 TE Connectivity / Linx Technologies 1: Rp71.366 1.999In Stock	Mfr. Part No. L000606-05 Mouser Part No 712-L000606-05	TE Connectivity / Linx Technologies	Antennas LPWA FPC ANT HDP MHF4L 100mm 450-467 MHz Learn More about TE Connectivity / Linx Technologies te ism lpwa 410 467mhz fpc antennas	Datasheet	1.999In Stock	Rp71.366 Rp57.606 Quote Quote	Min.: 1 Mult.: 1	ISM Antennas - ISM, MICS, UHF, VHF, UWB	PCB Antennas		450 MHz	467 MHz						3 dBi		50 Ohms	2.2:1					1 Band	Adhesive Mount	Connector	MHF4L		IoT Applications	92.5 mm	20 mm	0.13 mm		1.13 mm Coax

450 MHz Antennas

Applied Filters:

Customer Service Office

Company

Resources

Support

0 dBi
- 13.2 dBi
- 9.3 dBi
- 4.15 dB - 5.40 dB
- 3.5 dBi
- 1.7 dBi
- 1.4 dBi
- 1.14 dBi
- 0.71 dBi
- 0.23 dBi, 2.56 dBi, 2.65 dBi, 1.93 dBi, 2.43 dBi, 2.31 dBi, 3.85 dBi, 3.55 dBi, 0.59 dBi, 5.32 dBi
- 0.2 dBi
1 dBi, 3 dBi
1.2 dBi, 1.8 dBi, 4.7 dBi, 4.9 dBi, 5 dBi, 6.6 dBi, 4.7 dBi, 4.8 dBi, 6.5 dBi
1.46 dBi, - 0.92 dBi, 2.87 dBi, 3.42 dBi, 1.1 dBi, 0.75 dBi, 3.95 dBi, 4.17 dBi, 4.85 dBi, 2.82 dBi, 4.16 dBi, 0.46 dBi, 3.88 dBi
2 dBi
2.15 dBi
2.4 dB
2.5 dBi
2.5 dBi, 3 dBi, 3.5 dBi
3 dB

BNC Female
BNC Male
Dome
MHF
MHF / U.FL
MHF4L
N Female
N Male
NMO
NMO Connector
N Type Female
N Type Male
RP-SMA Female
RP-SMA Male
RP-SMA Male, SMA Male
SMA Male
SMA-Male
SO239
TNC Male
TNC Plug

CDMA, LTE, ISM
Cellular, GPS, GLONASS, WiFi
Cellular IoT
Handheld Device
Harsh Environment, Remote Monitoring, SCADA, Mining, Industrial, Oil/Gas, Utility, SmartGrid, Wastewater, Irrigation, Municipal, Transportation
High Speed Video, Real Time Streaming, High Capacity MIMO Networks on Public Transportation
In-building Repeater Systems, Public Safety, Multi-floor Coverage
Indoor and Outdoor Mobile Antennas
IoT
IoT Applications
IoT Devices, Remote Monitoring, Smart Utilities
Land Mobile Radio
LMR, Public Safety, M2M
Mobile, Fixed Applications
Mobile Antennas
Point to Point, Multi Point Outdoor Antennas Applications, Private Oraganizations, Government Agencies, Transport, Railroad Switching, Remote Locations, Oil Fields, Weather Conditions, Meter Data Transmissions, Utilities
Police Cruisers, Municipal Vehicles, Emergency Vehicles, Industrial Vehicles
Public Building
Public Safety
Public Safety, Transportation, Utility, Military Mobile

1.43 mm
33.2 mm
1.5 in
42 mm
45 mm
50.8 mm
51.2 mm
51.8 mm
80 mm
82.55 mm
89.9 mm
92.5 mm
4.1 in
120 mm
130 mm
6 in
167 mm
176.48 mm
177.8 mm
203 mm

0.13 mm
1.5 mm
3.49 mm
4.59 mm
8 mm
9 mm
11.6 mm
13.6 mm
15.74 mm
20 mm
29 mm
79.45 mm
3.13 in
82.55 mm
3.38 in
3.4 in
3.5 in
142 mm
290 mm
13 in

Apex III
Baracuda
CHROME COIL
CW
EXD
FG
Hercules
Meteor
MFB
MLPV
MYA
Pantheon
Phantom
PW
QW
Rail
RHR
SC Indoor
Shockwave
TRANSIT