Из официальной документации: https://yadi.sk/d/X4N_woltxyHXK

Supported adapters

Wireless (WLAN) (Capture Engine for Omnipeek (Windows) only): For wireless packet

capture on a WLAN network, a supported WLAN adapter that has the special NDIS

driver installed is required. Savvius has tested Atheros, Marvell, and Ralink cards for

wireless capture. For more information and to download other compatible wireless

drivers, please visit http://www.savvius.com/support/downloads/drivers.

Realtek и в помине нет.