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Overview

The QYAJS B08RHKTZ9X is a dual-band WiFi antenna covering 2.4GHz and 5.8GHz with a 10dBi gain, packaged as an omnidirectional antenna pair. Equipped with RP-SMA male connectors, it is designed to replace the stock antennas on routers such as the ASUS RT-AC68U and RT-AC88U, as well as on compatible wireless network cards and adapters. By swapping out the original antennas, users can boost signal strength and reduce dead zones in their home or office network. Each antenna measures approximately 7.6 inches (19.3 cm) in length and features a 50-ohm impedance with a VSWR of 1.5 or less, ensuring efficient power transfer and minimal signal loss. The swivel base allows easy adjustment of the antenna angle for optimal positioning.

Connectivity & Compatibility

These antennas use an RP-SMA male connector (threaded, no center pin) and are compatible with devices that have an RP-SMA female jack (threaded with center pin). Applicable devices include many ASUS routers (RT-AC68U, RT-AC88U, RT-AC86U, RT-AC66U B1), the ASUS USB-AC56 adapter, and some models from TP-Link, Netgear, and Buffalo that share the same connector standard. Installation is straightforward: simply unscrew the existing antenna and screw in the new one. The 360-degree swivel allows you to angle the antenna as needed. Note: before purchasing, verify that your device uses an RP-SMA female jack; antennas with RP-SMA male connectors will not fit SMA female ports.

Product Info

This 2-pack antenna set is available on for around ¥1,798 (as of September 2026). The manufacturer is QYAJS, and while no official warranty period is listed, 's return policy applies. The package contains only the two antennas — no mounting brackets or extension cables are included. Positioned as an entry-level to mid-range accessory, the QYAJS antenna offers a noticeable performance upgrade over typical stock antennas at a very low cost. It is a solid choice for users who want to improve wireless coverage without investing in expensive external antenna systems.

Best Use Cases

  • Users wanting to quickly extend router range: Ideal for ASUS RT-AC series owners who find the default antennas insufficient. The two-pack allows simultaneous replacement of both main antennas, delivering a measurable improvement in coverage. Not suitable for routers with proprietary or non-RP-SMA connectors. - Desktop PC users with RP-SMA wireless adapters: If your PCIe WiFi card or USB adapter features an RP-SMA antenna port, swapping to these 10dBi antennas can significantly improve reception in rooms with thick walls. However, due to the short antenna cable, this setup works best when the PC is near the router. - Budget-conscious upgraders: For under ¥2,000, you get a practical gain boost that can make a real difference in everyday browsing and streaming. If you're new to antenna upgrades, this is a risk-free entry point. The lack of a manufacturer warranty and unknown long-term durability are the main trade-offs.

Product Disclosure (Amazon)

  • Manufacturer: QYAJS
  • Seller: Riverheji
  • Fulfilled by: Riverheji
  • ASIN: B08RHKTZ9X
  • Note: This article covers a manufacturer-made product based on Amazon listing details.