WiFi Clients Not 5GHz

Is the XG the only WLAN device or are there some accesspoints, too? I'm especially thinking of AP15 accesspoints.

5GHz has a smaller range than 2,4GHz, maybe the clients can't see the 5GHz WLAN where they are?

The UG is the only device.  I do remote support for the client, and it sounds like they are just down the hall from the device.  The signal strength is strong.

Does the UG present two options (one for 2.4 and one for 5GHz) to the client, or is it up to the client to choose the best one?

I edited my question to ask about setting up separate 2.4GHz and 5GHz networks.  Thoughts?

You can define 2.4 only / 5.0 only SSIDs and broadcast both over the same device. I would at least publish a new 5.0 GHz only WLAN and ask some device users to test this connections. The other should be deleted (ignored) on the device to be sure the right one is chosen.

I'm not sure which algorithm decides which network to choose, maybe the strongest signal wins, what could be a bit messy with a 2.4/5.0 combined WLAN. But I can't offer experience here since our customers mostly use AP15 devices or AP100X devices where range is more important than the throughput.

You can define 2.4 only / 5.0 only SSIDs and broadcast both over the same device. I would at least publish a new 5.0 GHz only WLAN and ask some device users to test this connections. The other should be deleted (ignored) on the device to be sure the right one is chosen.

I'm not sure which algorithm decides which network to choose, maybe the strongest signal wins, what could be a bit messy with a 2.4/5.0 combined WLAN. But I can't offer experience here since our customers mostly use AP15 devices or AP100X devices where range is more important than the throughput.

I will set up a test and see how that goes. Thanks for the tips - I will update with my results!

So I set up a new 5GHz wireless network.  The laptop that is closest to the firewall doesn't see it.

In the UG interface, there is an option for Access Points - with one listed ("LocalWifi0").  When I click on it to edit, it shows the existing two wireless networks, and it won't allow me to add my new 5GHz network, I'm guessing because the access point settings are using the 2.4GHz band.  Below is a screenshot of the settings and the error message.

Hi Todd Richards 

Unfortunately with the built-in local access point of the XG, you are only able to utilize either the 2.4GHz OR the 5GHz. Your options are either to test using only the 5GHz band or having another external AP so that you can utilize both.

Regards,

 That's what my conclusion was - thanks for confirming.  I changed the access point to just 5GHz (and added my test 5GHz network) but nobody could see it.  I then changed the existing ones to 5GHz but they weren't able to connect.  Maybe I need a firewall reboot in between.  These are new iPhone and newer laptop users, so it shouldn't be a problem.

I will reach out to my reseller team to see about an external AP.  Unfortunately the "or" wasn't explained very well...

Thanks for everyone's help!