Connect MacbookPro and AirPort Extreme via 5Ghz channel

Hi.
I have three Apple devices:
- Macbook Pro 13" 2012 year (802.11n wi-fi standart)
- iPad mini with Retina 2013 year (802.11n wi-fi standart)
- Airport Extreme 2013 year (with support 802.11ac wi-fi standart)
By default, a macbook device connected to the channel 2.4Ghz. Connection speed is set 217 Mbit/sec. If you divide the channels 5Ghz and 2.4Ghz, then the connection speed to 450 Mbit/sec on channel 5Ghz.
How to configure AirPort Extreme when macbook and iPad was connected to the AirPort using 5Ghz channel by default?
Gennadiy.

Hi Bob
So, I did some experiments with Macbook and two router:
- ASUS N66U
- Airport Extreme 2013
Note the parameter Transmit Rate.
Software Versions:
          CoreWLAN: 4.0 (400.45.1)
          CoreWLANKit: 3.0 (300.35)
          Menu Extra: 9.0 (900.34)
          System Information: 9.0 (900.8)
          IO80211 Family: 6.0 (600.34)
          Diagnostics: 3.0 (300.37)
          AirPort Utility: 6.3.2 (632.3)
1. Macbook Pro + ASUS N66U (5Ghz, 36.1 channel)
Card Type: AirPort Extreme  (0x14E4, 0x10F)
          Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.100.22)
          MAC Address: 20:c9:d0:7a:28:57
          Locale: RoW
          Country Code: EU
          Supported PHY Modes: 802.11 a/b/g/n
          Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48
          Wake On Wireless: Supported
          AirDrop: Supported
          Status: Connected
          Current Network Information:
            Gennadiy_Home:
              PHY Mode: 802.11n
              BSSID: 74:d0:2b:42:ad:f4
              Channel: 36,1
              Country Code: EU
              Network Type: Infrastructure
              Security: WPA2 Personal
              Signal / Noise: -56 dBm / -86 dBm
              Transmit Rate: 450
              MCS Index: 23
2. Macbook Pro + Airport Extreme without separate 2.4 and 5Ghz network. Macbook connected over 2.4Ghz on 11 channel
Card Type: AirPort Extreme  (0x14E4, 0x10F)
          Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.100.22)
          MAC Address: 20:c9:d0:7a:28:57
          Locale: RoW
          Country Code: BY
          Supported PHY Modes: 802.11 a/b/g/n
          Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
          Wake On Wireless: Supported
          AirDrop: Supported
          Status: Connected
          Current Network Information:
            Gennadiy_Home:
              PHY Mode: 802.11n
              BSSID: 90:72:40:1c:35:c4
              Channel: 11
              Country Code: BY
              Network Type: Infrastructure
              Security: WPA2 Personal
              Signal / Noise: -69 dBm / -87 dBm
              Transmit Rate: 117
              MCS Index: 14
3. Macbook Pro + Airport Extreme with separate network. Macbook connected over 2.4Ghz on 11 channel
Card Type: AirPort Extreme  (0x14E4, 0x10F)
          Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.100.22)
          MAC Address: 20:c9:d0:7a:28:57
          Locale: RoW
          Country Code: BY
          Supported PHY Modes: 802.11 a/b/g/n
          Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
          Wake On Wireless: Supported
          AirDrop: Supported
          Status: Connected
          Current Network Information:
            Gennadiy_Home:
              PHY Mode: 802.11n
              BSSID: 90:72:40:1c:35:c4
              Channel: 11
              Country Code: BY
              Network Type: Infrastructure
              Security: WPA2 Personal
              Signal / Noise: -70 dBm / -86 dBm
Transmit Rate: 130
              MCS Index: 15
4. Macbook Pro + Airport Extreme with separate network. Macbook connected over 5Ghz on 36.1 channel
Card Type: AirPort Extreme  (0x14E4, 0x10F)
          Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.100.22)
          MAC Address: 20:c9:d0:7a:28:57
          Locale: RoW
          Country Code: BY
          Supported PHY Modes: 802.11 a/b/g/n
          Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
          Wake On Wireless: Supported
          AirDrop: Supported
          Status: Connected
          Current Network Information:
            Gennadiy_Home_5G:
              PHY Mode: 802.11n
              BSSID: 90:72:40:1c:35:c5
              Channel: 36,1
              Country Code: BY
              Network Type: Infrastructure
              Security: WPA2 Personal
              Signal / Noise: -79 dBm / -86 dBm
              Transmit Rate: 81
              MCS Index: 4
As a result we have bad results in tests 2-4. Particularly upset that Airport Extreme loses Asus N66U on test results. If I change regional setting to RU (Russian), results does not change:
Card Type: AirPort Extreme  (0x14E4, 0x10F)
          Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.100.22)
          MAC Address: 20:c9:d0:7a:28:57
          Locale: RoW
          Country Code: RU
          Supported PHY Modes: 802.11 a/b/g/n
          Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 132, 136, 140, 149, 153, 157, 161, 165
          Wake On Wireless: Supported
          AirDrop: Supported
          Status: Connected
          Current Network Information:
            Gennadiy_Home:
              PHY Mode: 802.11n
              BSSID: 90:72:40:1c:35:c4
              Channel: 11
              Country Code: RU
              Network Type: Infrastructure
              Security: WPA2 Personal
              Signal / Noise: -69 dBm / -86 dBm
              Transmit Rate: 130
              MCS Index: 15
Bob, how can you comment on these results?

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