Antenna mod for hAP ac2 (RBD52G-5HacD2HnD-TC) - MikroTik
Amazon.com: Waveform 2x2 MIMO Panel Antenna Kit | 4G and 5G Compatible Modem, Router, Gateway and Hotspot Antenna Kit | Cellular Antenna with 30ft RS240 Cable, U.FL, TS9, and SMA Adapters :
MIKROTIK wireless dual-band router with 5 Gigabit Ethernet ports and external high gain antennas for more coverage, hAP ac3 with RouterOS L4 license (RBD53iG-5HacD2HnD) - The source for WiFi products at best