350Mhz-360Mhz-390Mhz-400Mhz UHF antenna TNC UHF N connector

UHF band 5dBi vehicle-mounted antenna

Applied to UHF frequency band data transmission radio signal transmission system and UHF frequency band data link transmission system. Design of separate packaging for antenna mast and suction cup holder.

Electrical specifications

Frequency range (MHz): 350-390/360-400

bandwidth(MHz): 40

Polarization mode: vertical

Gain(dBi): 5

Non roundness of horizontal plane(dB): +1.5

Horizontal half power lobe width°: 360

Vertical half power lobe width°: 45

Input impedance(Ω): 50

VSWR: ≤1.8

Maximum power (W): 100

Mechanical indicators

Type of connector:(Antenna) N-type male head

Joint position: bottom

Antenna size (mm):f20*(922±10)@350～390MHz/f20*(882±10)@360～400 MHz

Antenna weight (Kg):0.24 (Net weight of antenna pole, excluding suction cup)

Antenna color: Local black antenna pole

Waterproof grade: IP65

Working temperature (℃): -40～65

Working humidity (%): 5～95

Application scenarios: outdoor

Salt spray resistance ability: 96-hour neutral salt spray (GB/T 2423.17-2008)

Wind resistance strength (m/s):45

Installation method: Install with an M110N large suction cup holder or directly with backpack equipment

*Voltage standing wave ratio: The antenna pole is equipped with an M110N magnetic suction cup and placed on a 1 * 1-meter metal floor for testing. It is equipped with an M110N magnetic suction cup lead length of 4 meters or customized by the user.

FAQ

Q1: Could you please make the antenna shorter?

A1: The length of the antenna is related to the frequency. The lower the frequency, the longer the antenna.The engineer said the antenna can be made shorter, but its gain will be less. The signal will not be as strong.

More

A 350 MHz–360 MHz / 390 MHz–400 MHz UHF antenna with TNC or N connector usually refers to a specialized 40MHz bandwidth UHF antenna designed to operate efficiently in the frequency ranges within the UHF (Ultra High Frequency) band.

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1. Frequency Range

• 350–360 MHz band → Often used in:

  • Military communications

  • Specialized telemetry

  • Certain private radio networks

• 390–400 MHz band → Often used in:

  • Public safety

  • Land mobile radio (LMR)

  • Trunked radio systems

  • Government/military applications

So this antenna is a dual-band UHF antenna, tuned to both sub-ranges. It is not a wideband antenna covering 350–400 MHz continuously, but two narrower bands.

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2. Connector Types

• TNC connector (Threaded Neill–Concelman):

  • A threaded RF connector, better performance than BNC at higher frequencies.

  • Common in rugged or vibration-prone environments.

• N connector:

  • A larger threaded connector with low VSWR up to ~11 GHz.

  • Widely used in professional RF, military, and base-station equipment.

Your antenna may be available with either TNC or N depending on the equipment it will be attached to.

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3. Typical Specifications

(Generalized, since many vendors make versions of this)

• Frequency: 350–360 MHz / 390–400 MHz

• Gain: 2–6 dBi (depends on design: whip, dipole, collinear)

• Polarization: Vertical (omni)

• VSWR: < 1.5:1 typical

• Power handling: 50–100 W (typical for LMR/military radios)

• Connector: TNC male / N male at the base

• Impedance: 50 Ω

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4. Applications

• Military field radios and vehicle systems

• Government communication networks

• Trunked two-way radio systems

• Telemetry or COFDM video links in that band

• Base stations or repeater antennas