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ALUNOR RF

VHF 2-Channel Cavity Combiner (8-Inch)

136-175 MHz, 2 channels, 150 W per port, > 75 dB Tx-Tx isolation, 2.4 dB IL @ ΔTx 150 kHz. 9U.

  • Frequency
    136–175 MHz
  • Power
    15 W
  • Isolation
    > 75 dB
  • Insertion loss
    < 2.4 dB
  • Connector
    N-Female
  • Weight
    13 kg
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Specifications

Electrical
Frequency range 136–175 MHz
Power handling 15 W
Insertion loss <2.4 dB
Tx-Rx isolation >75 dB
VSWR (max) 1.5
Impedance 5 Ω
Mechanical
RF connectors N-Female
Weight 13 kg
Dimensions (H × W × D) 850 × 482 × 400 mm
Configuration
Channels 2
Cavity Diameter Inch 8
Min Tx Spacing Khz 75
Il At Dtx 150khz Db 2.4
Frequency Stability 0.8 ppm/°C
Rack Units 9
Temperature Range -30°C to +60°C
Mounting 19-inch rack
Combiner Type cavity
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

    8-inch high-Q cavities for 150 W continuous duty per port

  • 02

    > 75 dB Tx-Tx isolation prevents reverse power and intermod

  • 03

    9U / 13 kg chassis — fits any standard 19-inch rack

Technical brief

Compact two-port VHF combiner

Two 8-inch high-Q cavities with per-port ferrite isolators and bandpass filtering. Tx-Tx spacing > 75 kHz, isolation > 75 dB at all ports. Sweep-tested before ship; per-channel insertion loss documented in the unit's sweep report.

Need a custom configuration?

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