That's right, it doesn't connect, since the superchannel frequency must be specified in the scan list.

If you are facing connection problems between your MikroTik CPE (Customer Premises Equipment) configured in “superchannel” mode and a MikroTik AP (Access Point) on the 2402 MHz frequency, here are several aspects to consider that may be influencing this behavior:

1. Superchannel Settings

The “superchannel” configuration on MikroTik devices allows the use of frequencies outside the standard range allowed in most countries.

While this offers flexibility in channel selection, it also requires that both the AP and CPE be configured to operate on these extended channels. Verify that the AP is also configured to support “superchannel”.

2. Scan List

The fact that the CPE is configured with a default scan list means that it will try to connect using the standard channels. The 2402 MHz frequency is not a standard channel in most regions and may not be included in the default scan list.

You will need to ensure that the CPE scan list explicitly includes the 2402 MHz frequency or adjust it to include the frequency range covered by the superchannel.

3. Compatibility and Regulations

Make sure operation on the 2402 MHz frequency is allowed in your region. The use of non-standard frequencies may be restricted and subject to local telecommunications regulations.

If the use of such frequencies is restricted, devices could be inhibited from connecting as a compliance measure.

4. Interference and Environmental Conditions

The 2402 MHz frequency may be experiencing significant interference or be unstable in your particular environment.

This could be due to interference from other devices, physical structures blocking the signal, or simply because the frequency is not propagating efficiently in your area.

5. Hardware Configuration

Verify that the specific hardware of the CPE and AP are capable of operating on the selected frequency.

Although the software can support superchannel settings, the hardware must also be capable of transmitting and receiving signals on the designated frequencies.

Solutions:

• Check “superchannel” settings on both devices: Make sure both the CPE and AP are configured to use “superchannel” mode.
• Adjust the CPE “scan list”: Includes the 2402 MHz frequency explicitly in the “scan list”.
• Check local regulations: Make sure you are in compliance with local regulations.
• Frequency tests: Perform a spectrum analysis to determine if the 2402 MHz frequency is viable for use in your location.

If after verifying these aspects the problem persists, it may be useful to review MikroTik's technical documentation or contact technical support for specific help on configuring your devices.