RG-AP630 with 2 external antenna

Solution:
By default, RG-AP630 is running in full capacity of spatial streams, likes RG-AP630(IDA) is 3x3 spatial streams. If you only have 2 external antenna, it requires to downgrade spatial streams and MCS.

For 2x2  external antenna setting on controller as follow:
Spatial Streams
AC(config)#ap-config ap630
AC(config-ap)#antenna transmit 3 radio 1
AC(config-ap)#antenna receive 3 radio 1
AC(config-ap)#antenna transmit 3 radio 2
AC(config-ap)#antenna receive 3 radio 2


MCS
AC(config-ap)#802.11n mcs support 15 radio 1
AC(config-ap)#802.11n mcs support 15 radio 2
AC(config-ap)#802.11ac mcs support 19


For 1x1 external antenna setting on controller as follow:
Spatial Streams
AC(config)#ap-config ap630
AC(config-ap)#antenna transmit 1 radio 1
AC(config-ap)#antenna receive 1 radio 1
AC(config-ap)#antenna transmit 1 radio 2
AC(config-ap)#antenna receive 1 radio 2


MCS
AC(config-ap)#802.11n mcs support 7 radio 1
AC(config-ap)#802.11n mcs support 7 radio 2
AC(config-ap)#802.11ac mcs support 9



Notes: External antenna must be connected in sequence, you can find sequence number on RG-AP630 connector.