How do I find the wireless speed of my Time Capsule?

The "tower" version of the Time Capsule produces a wireless network signal that uses the same name for the 2.4 GHz and 5 GHz frequencies.

Your WiFi devices will automatically connect to either the 2.4 GHz or 5 GHz signal based on their own capabilities and physical distance from the Time Capsule.

For example, if you have a new iPhone....and....the iPhone is in the same room or very close proximity to the Time Capsule, the iPhone will connect at 5 GHz. The maximum speed that the Time Capsule can provide is 1300 Mbps using 5 GHz. But.....if your plan with your Internet Service Provider is 100 Mbps, for example, then that is the maximum speed at which the iPhone could connect to the Internet.

If the iPhone is located a few rooms away from the Time Capsule, it will connect to the stronger......but slower.....2.4 GHz signal. The maximum speed of the 2.4 GHz connection would be about 130 Mbps. But again, if your provider's plan is only 100 Mbps, then 100 Mbps will be maximum speed that you could ever expect for the Internet connection.

The speed of the WiFi signal will also slow depending on how many devices that might be connected to the network. For example, if you have 5 WiFi devices connected and your plan from your provider is 100 Mbps, then each device is going to connect at maybe half of that speed or less. Things really slow down significantly if you have more than 10 WiFi devices connected at the same time.

Chances are, the Time Capsule is capable of producing much faster speeds than your Internet Service Provider can deliver......unless you have a new plan that provides 1,000 Mbps speeds.

I would not be too concerned about exact speeds or maximum speeds. The important thing is whether all of your devices can connect to the WiFi network and you can access the Internet at a reasonable rate.

You can test the WiFi connection speed of any device by using a speed test site like www.speedtest.net

Unless you have an extremely old product.....14+ years.....the Time Capsule produces both a 2.4 GHz and 5 GHz WiFi signal simultaneously.

We can tell you more about your specific version of the Time Capsule if you can provide a bit more information about what version you might have.

Is the Time Capsule "tall" shaped, like a tower? If yes, tell us that you have the "tower" version.

Is the Time Capsule "flat" shaped, like small white pizza box? If yes, look on the bottom of the product for the model number, which is usually embedded in the foam pad base. The model number starts with an "A": followed by 4 numbers. Post back with that info.

If you go to troubleshooting on your Wi-Fi router app, it might have an option to temporarily disconnect the 5 GHz option. This is intended to allow people to connect devices that cannot pick between the two and can only use 2.4. I would try that and if you cannot find an option for turning it off, contact the manufacturer.

Not sure why you would want or even need this information, but you can see it if you.......

Open AirPort Utility on your Mac Finder > Applications > Utilities .> AirPort Utility

Click on the picture of the Time Capsule

Click Edit in the lower right corner of the smaller window that appears

Click the Internet tab at the top of the next window

Look for Subnet Mask

It will normally be something like 255.255.255.0. A subnet mask is a 32-bit number created by setting host bits to all 0s and setting network bits to all 1s. In this way, the subnet mask separates the IP address into the network and host addresses. 

Maybe if you could tell us what your goal might be, we could provide the specific answer that you might be looking for.

The Oppo and my Mac need to be on the same subnet, apparently.

If your devices are all connected to the same network, then they are all by default connected on the same subnet. This is the same as saying that devices need to be on the same network in order to communicate with each other.