Theres a known bug that you cant configure from the UI. From the CLI it should work.
I am running 8.12.0.5
(MC1) [mynode] #configure t
Enter Configuration commands, one per line. End with CNTL/Z
(MC1) [mynode] (config) #read-bootinfo ap-name ap6341
(MC1) [mynode] (config) #pro
process Process level operations
prompt Change the system prompt
provision-ap AP provisioning
(MC1) [mynode] (config) #provision-ap
(MC1) [mynode] (config-submode)#a-ant-gain
<a-ant-gain> Gain for 5.2GHz (802.11a) antenna
(MC1) [mynode] (config-submode)#a-ant-gain 6
(MC1) [mynode] (config-submode)#g-ant-gain
<g-ant-gain> Gain for 2.4GHz (802.11g) antenna
(MC1) [mynode] (config-submode)#g-ant-gain 6
(MC1) [mynode] (config-submode)#x-ant-gain
<x-ant-gain> Gain for 6GHz (802.11e) antenna
(MC1) [mynode] (config-submode)#x-ant-gain 5
(MC1) [mynode] (config-submode)#reprovision ap-name ap6341
(MC1) [mynode] (config-submode)#write mem
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Original Message:
Sent: Dec 18, 2025 06:09 AM
From: sboutreau
Subject: AP-634 External Antennas will NOT work
This config doesn't work for me : I've got the same message than above
Original Message:
Sent: Mar 01, 2024 09:35 AM
From: chulcher
Subject: AP-634 External Antennas will NOT work
Full support for standard power 6 GHz APs isn't coming until 8.12, with 8.11.2 you must configure the antenna gain of the AP by provisioning the AP through the CLI.
#configure terminal
(config) #read-bootinfo ap-name <name>
(config) #provision-ap
(config-submode)#a-ant-gain X
(config-submode)#g-ant-gain Y
(config-submode)#x-ant-gain Z
(config-submode)#reprovision ap-name <name>
(config-submode)#write memory
Make sure you provision a value for all three antennas otherwise the command will fail.
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Carson Hulcher, ACEX#110
Original Message:
Sent: Feb 29, 2024 10:46 PM
From: rob@bellit.net
Subject: AP-634 External Antennas will NOT work
AAP-634s NOT working
Getting this message: "Antenna gain not provisioned for external antennas"
Running 8.11.2
Can find no setting in GUI for external antenna gain and CLI commands do not seem to work either.
Any help will be greatly appreciated!