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Dual Isolator VHF 145-175 MHz

145-175 MHz, 150 W max power, >75 dB typical isolation, <1.0 dB insertion loss.

  • Frequency
    145-175 MHz
  • Power
    15 W
  • Isolation
    > 75 dB
  • Insertion loss
    < 1 dB
  • Connector
    N(f)
  • Weight
    1.2 kg
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Specifications

Electrical
Frequency range 145-175 MHz
Max. Input Power 15 W
Insertion loss <1 dB
Tx-Rx isolation >75 dB
VSWR (max) 1.5
Impedance 5 Ω
Mechanical
RF connectors N(f)
Weight 1.2 kg
Dimensions 65 × 114 × 160 mm
Configuration
Power 150 W
Insertion Loss <1.0 dB
Isolation >75 dB (Typ @ +25°C)
VSWR <=1.5:1
Verified 2026-05-06 · ALUNOR RF Engineering · source: ALUNOR RF Technical Catalogue 2026-01-21

All measurements at 25 °C, 50 Ω, unless otherwise noted.

Why this product

  • 01

    Dual-stage ferrite, > 75 dB typical at +25 °C

  • 02

    VHF tuning for 145-175 MHz

  • 03

    150 W continuous, < 1.0 dB IL

Technical brief

VHF variant

VHF counterpart to the Dual Isolator UHF 380-470 MHz. Same dual-stage construction and temperature-isolation curve, retuned for 145-175 MHz.

Solves these problems

Protecting transmitter PA stages from reflected power and inter-system intermod

A failed antenna, a wet feedline connector, or a strong nearby transmitter can drive reflected power back into the PA — and at multi-carrier sites, two transmitters mixing in a non-linear element generate intermod products that fall back into your receiver band.

Need a custom configuration?

Talk to an application engineer about variants, custom tuning, or integration into an existing repeater chassis.