SKF490DM
RF Antenna, 470 to 512MHz, UHF / LMR / IoT, 2.2dBi, Vertical, SMA Connector
- Manufacturer: PULSE ELECTRONICS
- Product type:
- Gain: 2.2dBi
- SVHC: No SVHC (04-Feb-2026)
- VSWR: 2.2
- Input Power: 100W
- Antenna Type: UHF / LMR / IoT
- Frequency Max: 512MHz
- Frequency Min: 470MHz
- Product Range: -
- Input Impedance: 50ohm
- Antenna Mounting: SMA Connector
- Antenna Polarisation: Vertical
| Delivery and price | |
|---|---|
| Units per pack | 10 |
| Price | 38.24 € |
| Current stock | 10+ |
| Lead time | 30 days |
## Outdoor ## _Low profile direct mount Antenna_ ## _SKF490DM – 470-512 MHz_ **==> picture [49 x 54] intentionally omitted <==** **----- Start of picture text -----**<br> @<br>**----- End of picture text -----**<br> ## _Features & Applications:_ - _Vehicle roof mount, directly on metal plane_ - _470-512MHz_ - _Cable length and connector type per request_ - _Available in Black (P/N SKF490DM) or_ - _White (P/N SKF490DMW)_ - _Heavy and light vehicles_ - _IoT, navigation, tracking_ |||**Electrical specifications @ 25° C**|**Electrical specifications @ 25° C**|**Electrical specifications @ 25° C**||| |---|---|---|---|---|---|---| |||**Frequency Band – 470-512 MHz**|**Band – 470-512 MHz**|||| |**Antenna type1**<br>**Nominal**<br>**Impedance**||**Polarization**||**Radiation**<br>**pattern**|**Power**<br>**withstanding**|**DC Ground**| |Dipole<br>50Ω||Vertical||Omni|100W|Yes| |||||||| |**Frequency (MHz)**||**470-512**||||| |**VSWR W/17FT(5.2M) Cable**||2.2:1||||| |**Peak Gain(dBi)**||2.2||||| |**Efficiency (%)**||85||||| |**HPBW Vertical Plane(**°)||72||||| |**Mechanical Specifications**|**Mechanical Specifications**|**Mechanical Specifications**|**Mechanical Specifications**|**Mechanical Specifications**|**Mechanical Specifications**| |---|---|---|---|---|---| |**SKF490DM**|||||| |**Size**<br>**W/H/L**|**Color**|**Weight**|**Cable / Connector**<br>**Type **||**Fixing System2**| |52.5 (2.07”) x 63.6 (2.50”) x<br>178.3(7.02”)mm|Black|375grms (0.83lbs)|RG-58 / SMA-Male||Direct Mount| |**Housing Material**|**Operating**<br>**Temperature**|**Storage**<br>**Temperature**|**Ingress**<br>**Protection**||**RoHS-6**<br>**Compliant**| |UV Protected Plastic|-40°C to +85°C|-40°C to +85°C|IP67||Yes| Notes: 1. Measured on Ø24” (609.6mm) ground plane. 2. Requires Ø.875” (22.3mm) hole. **==> picture [90 x 33] intentionally omitted <==** **----- Start of picture text -----**<br> 1<br>er<br>**----- End of picture text -----**<br> Preliminary (23/16) PulseElectronics.com ## Outdoor _Low profile direct mount Antenna SKF490DM – 470-512 MHz_ ## Test Setup / Charts **==> picture [75 x 19] intentionally omitted <==** **----- Start of picture text -----**<br> SKF490DM<br>ee<br>**----- End of picture text -----**<br> **==> picture [542 x 608] intentionally omitted <==** **----- Start of picture text -----**<br> VSWR vs Frequency<br>SKF490DM Measured on Ø24" ground plane, 17ft RG-58 cable<br>Measured at Pulse, USA - Apr 11, 2023<br>4<br>3.5<br>3<br>_— \De<br>2.5<br>= NSS<br>2<br>ES NGS<br>1.5<br>: 1 NS ON<br>antenna sample measured on<br> Ø24” (609.6mm) ground plane SKF490DM 17ft RG-58 Frequency, MHz 470-512 Spec<br>Peak Gain vs Frequency Efficiency vs Frequency<br>SKF490DM Measured on Ø24" ground plane, 12" cable SKF490DM Measured on Ø24" ground plane, 12" cable<br>Measured at Pulse, USA - Apr 11, 2023 Measured at Pulse, USA - Apr 11, 2023<br>3 100<br>90<br>2.5<br>80<br>2<br>70<br>1.5 See2 l et<br>60<br>1 50<br>0.5 ACSA) 40 . T™<br>30<br>0<br>20<br>-0.5 24555555500 |-FEESS [eee]<br>-1 ee 100<br>Frequency, MHz Frequency, MHz<br>SKF490DM 470-512 SKF490DM 470-512<br>XY plane XZ plane<br>0 0<br>5 5<br>330 0 30 Avg (dBi) =470 -2.53 330 0 30 Avg (dBi) =470 -2.31<br>-5 Peak (dBi) = -1.91 -5 Peak (dBi) = 1.14<br>Avg -3 (deg) = 360 Avg -3 (deg) = 71<br>-10 -10<br>300 -15 60 Avg (dBi) =490 -1.05 300 -15 60 Avg (dBi) =490 -1.41<br>-20 Peak (dBi) = -0.69 -20 Peak (dBi) = 1.92<br>Avg -3 (deg) = 360 Avg -3 (deg) = 73<br>-25 -25<br>510 510<br>-30 Avg (dBi) = -2.31 -30 Avg (dBi) = -2.67<br>270 -35 90 Peak (dBi) = -2.06 270 -35 90 Peak (dBi) = 0.83<br>Avg -3 (deg) = 360 Avg -3 (deg) = 68<br>240 120 240 120<br>210 150 210 150<br>470 490 510 470 490 510<br>180 Phi Angle (°) 180 Theta Angle (°)<br>2 PulseElectronics.com Preliminary (23/16)<br>VSWR<br>460 465 470 475 480 485 490 495 500 505 510 515 520<br>460 465 470 475 480 485 490 495 500 505 510 515 520 460 465 470 475 480 485 490 495 500 505 510 515 520<br>Gain (dBi) Gain (dBi)<br>Peak Gain (dBi) Efficiency (%)<br>**----- End of picture text -----**<br> ## Outdoor _Low profile direct mount Antenna SKF490DM – 470-512 MHz_ ## Mechanical Drawing ## **SKF490DM** **Dimensions:** Inches (mm) Unless otherwise specified, all tolerances are ±.010 (0.25mm) ## Packaging ## **SKF490DM** ## **Packaging info:** 1 antenna packed in a plastic bag. 1 label on each plastic bag with part number, description, date code. ## Notes: 1. Please contact sales for availability, lead time, and/or any special requests. Samples available upon request. ## For More Information: Americas - antennas.us@pulseelectronics.com | Europe – antennas.eu@pulseelectronics.com | Asia – antennas.as@pulseelectronics.com | Questions? +1-800-ANTENNA Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. © Copyright , 2020. Pulse Electronics, Inc. All rights reserved. Company address: Pulse Electronics, a YAGEO Company, 15255 Innovation Drive, Suite #100, San Diego, CA 92128 Preliminary (23/16) PulseElectronics.com 3
Updated at June 9, 2026
Pulse Electronics, a YAGEO company, is a global leader in the design and manufacturing of passive electronic components. With a legacy of innovation dating back to 1956, the company provides essential technology for the communications, computing, industrial, transportation, and IoT sectors. Pulse is recognized worldwide for delivering high-performance solutions that power advanced applications, ranging from 5G networks and electric vehicles to data centers and smart grids. The company's extensive product portfolio is heavily anchored in power and networking magnetics. This includes a comprehensive range of power inductors engineered for exceptional efficiency and reliability in demanding environments. To address complex electromagnetic compatibility challenges, Pulse also manufactures highly effective EMC and RFI suppression solutions, such as common mode chokes and filters, alongside specialized toroidal and RF inductors designed to ensure clean power delivery and optimal signal integrity. Beyond traditional magnetics, Pulse excels in the development of advanced wireless and power conversion components. Their connectivity solutions feature a wide array of high-performance RF antennas and single-band chip antennas tailored for modern connected devices. Furthermore, to support sophisticated power architectures, Pulse provides a broad spectrum of transformers—encompassing PCB-mounted designs, current sensing transformers, and precise pulse transformers—equipping engineers with robust, industry-proven components for power isolation and measurement.
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