4-Channel Cavity Combiner Airband (8-Inch)
4 channel airband combiner, 112-137 MHz, > 75 dB isolation, 3.2 dB IL @ 150 kHz, 150 W.
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Frequency112–137 MHz
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Power15 W
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Isolation> 75 dB
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Insertion loss< 3.2 dB
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ConnectorN-Female
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Weight27.2 kg
Specifications
| Frequency range | 112–137 MHz |
|---|---|
| Power handling | 15 W |
| Insertion loss | <3.2 dB |
| Tx-Rx isolation | >75 dB |
| VSWR (max) | 1.5 |
| Impedance | 5 Ω |
| RF connectors | N-Female |
|---|---|
| Weight | 27.2 kg |
| Dimensions (H × W × D) | 1050 × 482 × 535 mm |
| Channels | 4 |
|---|---|
| Cavity Diameter Inch | 8 |
| Isolation Db | 75 |
| Min Spacing Khz | 75 |
| Insertion Loss Db At 150khz | 3.2 |
| Insertion Loss Db At 250khz | 2.5 |
| Insertion Loss Db At 500khz | 2 |
| Frequency Stability | 0.8 ppm/C |
| Temperature Range | -30C to +60C |
| Mounting | 19-inch rack (12U) |
| Combiner Type | cavity |
All measurements at 25 °C, 50 Ω, unless otherwise noted.
Why this product
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01
Four 8-inch cavities optimised for the airband
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02
2.0 dB IL achievable at 500 kHz channel spacing
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03
27.2 kg / 12U chassis
Technical brief
## Topology
Four 8-inch cavities tuned for the aviation band, per-channel ferrite isolation. Insertion loss scales with channel spacing: 3.2 dB at 150 kHz, 2.0 dB at 500 kHz.
## Where this fits
Aviation ground stations and airfield repeater installations combining 4 ATC carriers onto a single antenna.
Related products
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7-Channel Cavity Combiner VHF (8-Inch)
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6-Channel Cavity Combiner VHF (8-Inch)
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5-Channel Cavity Combiner VHF (8-Inch)
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3-Channel Cavity Combiner VHF (8-Inch)
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UHF 4-Channel Hybrid Combiner
380-470 MHz (5 sub-bands), 4 channels, 50 W/port, > 100 dB isolation, 7.5 dB IL. < 20 MHz spacing.
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Need a custom configuration?
Talk to an application engineer about variants, custom tuning, or integration into an existing repeater chassis.