# Q281B Keysight Waveguide Adapter New

**Features**

-   Superior RF Performance
-   Maximum SWR: 1.17
-   Waveguide Designator: EIA WR-22 MIL-W-85/3-013
-   Flange Designator: UG-383/U MIL-F-3922/67B-013
-   Coaxial Connector: 2.4 mm male

The Keysight Q281B is a 2.4 mm male to WR-22 waveguide adapter that operates in the 33 to 50 GHz frequency range. These adapters transform waveguide transmission lines into 50 ohm coaxial lines. Power can be transmitted in either direction, and each adapter covers the full frequency range of its waveguide band with SWR less than 1.3.

## Details

- **Price:** 2974.0 USD
- **Vendor:** Keysight
- **Type:** Wave Adap
- **Tags:** product_manual_group_3

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2974.00 USD | In stock |

## Images

- Q281B Keysight Technologies Waveguide Adapter

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> Source: [ValueTronics](https://valuetronics.com/products/q281b-keysight-waveguide-adapter-new)
> Updated: 2026-05-21