The RouterBOARD R52H is a wireless 802.11a+b+g miniPCI card for multiband high speed applications, with up to 350mW output power.

It works on 2.192-2.539 and 4.920-6.100GHz frequency ranges and supports Turbo mode for faster transfers. The card performs best when coupled with the MikroTik RouterOS.

R52H is optimized to work with MikroTik Nstreme protocol to reach extra long distances at a great speed. The Nstreme protocol is MikroTik proprietary wireless protocol created to overcome speed and distance limitations of IEEE 802.11 standards and to extend point-to-point and point-to-multi point wireless link performance.

The new Nstreme-dual protocol is designed to provide real full-duplex communications over wireless with a pair of wireless cards – one for transmitting data and one for receiving.

- Specifications -
- Chipset: Atheros AR5414
- Connectors: Two U.fl connectors
- Powering: 3.3V +/- 10% DC; 800mA max (600mA typ.)

- Frequencies -
- 802.11b/g 2.192 – 2.507 (5 MHz step); 2.224 – 2.539 (5MHz step)
- 802.11a 4.920 – 6.100 (5 MHz step)

- Transfer Data Rate -
- 802.11b:11,5.5,2,1 Mbps, auto-fallback
- 802.11g(Normal mode):54,48,36,24,18,12,9,6 Mbps, auto-fallback
- 802.11g(Turbo mode):108,96,72,48,36,24,18,12 Mbps, auto-fallback
- 802.11a(Normal mode):54,48,36,24,18,12,9,6 Mbps, auto-fallback
- 802.11a(Turbo mode):108,96,72,48,36,24,18,12 Mbps, auto-fallback

- Output Power / Receive Sensitivity -
- IEEE 802.11a: 24dBm / -90dBm @ 6Mbps // 19dBm / -70dBm @ 54Mbps
- IEEE 802.11b: 25dBm / -92dBm @ 1Mbps // 25dBm / -87dBm @ 11Mbps
- IEEE 802.11g: 25dBm / -90dBm @ 6Mbps // 20dBm / -70dBm @ 54Mbps