In this page of the wiki https://www.aerofly.com/dokuwiki/doku.php/aircraft:f18, when explaining the BCN feature of the UFC in the F18, it says:
A radio beacon can also be tuned with the up front controller (UFC).
- Press the BCN button on the UFC
- Type in the frequency, e.g. 3850 for 385.0 kHz. Note that the dot position is displayed, make sure to enter the right amount of zeros.
- Press enter to activate the frequency.
- Turn the system on with the ON/OFF button
The HSI should then display a bearing needle towards the beacon
This isn't right, it mixes the functionality of ADF with that of the Radar Beacon.
The functionality of tuning into a radio beacon and showing a bearing needle pointing towards it, is ADF. ADF is activated by tuning into the beacon frequency with one of the two radios, and then activating it with the ADF switch to the left side of the UFC (choosing the radio to use):
The UFC BCN page instead, allows you to configure a beacon that is emitted from the F18 itself, and is used by the aircraft carrier to track the plane when approaching for landing.
I don't know if this is just a mistake in the wiki, or if this is a bug in the simulator, otherwise I would just propose the change in the wiki.
I can't test it myself because I don't own AeroflyFS, I just got here by reading stuff about the F18 (I do use other simulators, I should try this one some day!).