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A1111 Series (Cut-to-Frequency 136–960 MHz)

Cut-to-Frequency NMO Mobile Antenna


The A1111 Series is a cut-to-frequency quarter-wave NMO antenna for permanent mobile LMR installations from 136 to 960 MHz, with unity gain and 200 W power handling.

  • Selects one permanent-mount platform across documented LMR frequency options.
  • Ships cut and tested to the chosen operating range.
  • Uses a corrosion-resistant stainless-steel whip for heavy-duty mobile service.
  • Offers brite or black finishes for standard TAD/NMO mounts.

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

Product Description

The A1111 Series gives mobile LMR systems a permanent-mount quarter-wave option across documented VHF, 220 MHz, UHF, and 800/900 MHz ranges. Each antenna is cut to the selected operating range rather than operating across the entire headline span as one broadband configuration.

The 20-inch maximum stainless-steel whip is paired with an ABS base, brass insert, and gold-plated spring contact for heavy-duty vehicle service. Brite and black finishes allow the antenna to match common fleet installation preferences.

Ideal applications: permanent vehicle-mounted LMR radios that require a frequency-specific unity-gain whip.

Example Model Configurations: A1111A, A1111B

Key Specifications

Feature Specification
Technology LMR / P25
Frequency

LMR / P25: 136–960 MHz series; each ordered antenna is cut to a selected subrange

Gain

LMR / P25: Unity

Configuration 1 RF feed
Connector / Cable

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

Mounting Permanent standard TAD/NMO mount
Dimensions Frequency dependent; 20.00 in (50.8 cm) maximum whip length
Material

Housing: ABS base housing

Base: ABS with ultrasonic brass insert

Element: Stainless-steel whip

VSWR

LMR / P25: <1.2:1

Maximum Input Power

LMR / P25: 200 W

Models & Configurations

Model / Configuration Configuration Details
A1111A NMO mount; Chrome / brite finish
A1111B NMO mount; Black

Tech Documents & Resources

a1111-a2111-series-data-sheet

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