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Compact SMA VHF antenna for vehicles GL-SD90

Amateur radio enthusiasts can use the GL - SD90 for VHF band communication. Its wide frequency range and decent gain allow for better signal reception and transmission, enabling them to connect with other operators over longer distances.
  • GL-SD90

  • Asialeren

  • 8517710000

  • GL-SD90.pdf

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Electrical specifications

Frequency Range(MHz)

144-430

Impedance(ohm)

50

Gain (dBi)

2.5-3.5

Polarization

Vertical

VSWR

≤1.5

Maximum input power (W)

50

Mechanical specifications


Connector

SMA

Height-mm

490mm

Radome Material

Copper,stainless steel

Color

blackr

Weight-KG

0.3

Operating temperature (℃)

-40~80

Product Introduction

  1. Wide VHF Frequency Coverage:The GL - SD90 operates across the 144 - 430MHz frequency range. This wide - band coverage makes it suitable for a variety of VHF - based applications, providing flexibility for different wireless communication needs.

  2. Decent Gain Performance:With a gain ranging from 2.5 - 3.5dBi, the antenna can effectively strengthen signals within its operating frequency range. This gain helps in extending the communication range and improving signal quality, ensuring reliable communication.

  3. Stable Impedance and Low VSWR:It has an impedance of 50Ω and a VSWR of ≤1.5. The stable impedance ensures efficient power transfer, while the low VSWR reduces signal reflection. This combination results in a more stable connection and better overall performance.

  4. Durable Radome Material:The radome of the GL - SD90 is made of copper and stainless steel. These materials offer excellent durability, protecting the internal components from environmental factors such as moisture, corrosion, and mechanical stress.

  5. Simple Installation and Compatibility:Featuring an SMA connector, the GL - SD90 is easy to connect to a wide range of devices. Its relatively lightweight design (0.3 kg) and a height of 490mm also make it convenient to install in various locations, both indoors and outdoors.

Application scenarios

  • Emergency responders requiring robust communication in disasters.

  • Amateur radio operators for field operations or contests.

  • Outdoor adventurers needing reliable signals in remote areas.

  • Fleet vehicles (trucks, boats) for mobile communication.

  • Base stations in rural or urban networks.

FAQ

Q: Is this antenna waterproof?
A: While not fully waterproof, its stainless steel/copper radome offers strong weather resistance. Avoid submersion.


Q: What devices support the SMA connector?
A: Compatible with handheld radios, transceivers, and modern VHF/UHF systems using SMA ports.


Q: Can it handle high-power transmissions?
A: Yes, it supports up to 50W input power for clear, high-performance broadcasts.


Q: Is a ground plane required?
A: Vertical polarization works best with a ground plane, but it performs well in mobile setups without one.


Q: How to mount it on a vehicle?
A: Use standard magnetic mounts or brackets (not included) due to its lightweight design.


Q: Does it work in freezing conditions?
A: Yes, it operates in temperatures as low as -40°C, perfect for Arctic expeditions or winter use.


Q: Can I customize the cable length?
A: Default cable length is fixed, but contact Global Antenna for custom solutions.


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