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A55136 (P25 Tri-Band LMR)

P25 Tri-Band NMO Mobile Antenna


The A55136 is a no-tune P25 tri-band NMO antenna covering 136–174, 380–520, and 698–960 MHz for public safety mobile radios.

  • Connects VHF, UHF, and 700/800/900 MHz P25 bands through one feed.
  • Provides 3 dBi VHF gain and 5 dBi on the two higher ranges.
  • Chooses a compact bullet base or movement-tolerant shock spring.
  • Mounts on a standard NMO interface with an additional O-ring seal.

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

Product Description

The A55136 serves public safety vehicles that use P25 radios across VHF, UHF, and 700/800/900 MHz bands. Its three no-tune frequency ranges allow one mobile whip to remain in place when the connected radio operates across the documented public safety bands.

A55136TB uses a bullet base, while A55136TBS adds a shock spring for installations that need more movement at the mount. Both versions share the omnidirectional pattern, 200 W power rating, spring-loaded NMO contact, and additional O-ring seal.

Ideal applications: public safety fleets, police vehicles, P25 land mobile radio, and supported TETRA installations.

Example Model Configurations: A55136TB, A55136TBS

Key Specifications

Feature Specification
Technology LMR / P25; TETRA
Frequency

LMR / P25: 136–174 MHz; 380–520 MHz; 698–960 MHz

Gain

LMR / P25: 3 dBi at 136–174 MHz; 5 dBi at 380–520 MHz; 5 dBi at 698–960 MHz

Configuration 1 RF feed
Polarization

LMR / P25: Vertical

Connector / Cable

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

Mounting Standard NMO mount; circular rubber gasket; mount sold separately
Dimensions 0.125 in whip diameter × 20.37 in length; 1.75 in base diameter with rubber gasket
Material

Housing: ABS plastic

Base: ABS with brass insert; TB bullet or TBS shock-spring base

Element: 0.125 in stainless-steel radiator / whip

VSWR

LMR / P25: 2.25:1 maximum over range

Maximum Input Power

LMR / P25: 200 W

Models & Configurations

Model / Configuration Configuration Details
A55136TB 136-174/380-520/698-960 MHz; 3dBd gain; Black
A55136TBS 136-174/380-520/698-960 MHz; 3dBd gain; Black

Tech Documents & Resources

A55136 Triband Specification Sheet

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