Skip to main content

A1811WB (Wideband VHF)

Wideband VHF NMO Whip Antenna


The A1811WB (S) is a no-tune 136–174 MHz VHF NMO antenna with 3 dBi gain and a choice of solid or shock-spring base.

  • Covers the 136–174 MHz VHF range without field tuning.
  • Chooses a solid base or shock spring without changing the RF range.
  • Provides 3 dBi gain when installed on the required ground plane.
  • Operates from −40°C to +80°C in a black 21.25-inch whip.

Customization: Cable type, cable length, and connectors can be configured for specific installation requirements.

Product Description

The A1811WB (S) serves VHF public safety and LMR vehicles that need coverage across 136–174 MHz without cutting the whip. The same RF profile is available as A1811WB with a solid base or A1811WBS with a shock spring, allowing the mounting response to change without selecting a different band.

The antenna requires a ground plane for its specified match and provides 3 dBi gain with up to 200 W power handling. Its black stainless-steel construction and −40°C to +80°C operating range support exposed vehicle locations.

Ideal applications: law enforcement vehicles, public safety fleets, and VHF land mobile radio systems.

Example Model Configurations: A1811WB, A1811WBS

Key Specifications

Feature Specification
Technology LMR / P25
Frequency

LMR / P25: 136–174 MHz

Gain

LMR / P25: 3 dBi

Configuration 1 RF feed
Connector / Cable

LMR / P25 connector: spring-loaded contact through NMO mount

Mounting Standard TAD/NMO mount; solid base for A1811WB
Dimensions 21.25 in (54 cm) high; 1.38 in (35 mm) base diameter
Material

Housing: Black ABS housing

Base: ABS and aluminum

Element: Stainless-steel radiator

VSWR

LMR / P25: <2:1; ground plane required

Maximum Input Power

LMR / P25: 200 W

Operating Temperature -40 to 80 °C

Models & Configurations

Model / Configuration Configuration Details
A1811WB 136-174 MHz; Black
A1811WBS 136-174 MHz; Black

Tech Documents & Resources

A1811WB(S) Spec Sheet

A1811WBS Tech Sheet

A1811WB – Tech Sheet

Continue to TheAntennaStore.com

You’re being redirected to our online shop, The Antenna Store.