Two opposite Rwy with identical ILS frequency

[Peter Dowson]

In these dual installations with single frequency ILS', the tower controller selects which one will be operational at any one time which corresponds to the active runway ... they do not transmit simultaneously, or interference would result.

Ah, thanks for the clarification. I thought they'd simply be shielded to prevent any back-effect.

In FS, of course, they are all operational at the same time, and the one you receive, if any, depends on your position relative to the runway centre.

Regards

Pete

[joaquim Sa Nogueira]

Ah, thanks for the clarification. I thought they'd simply be shielded to prevent any back-effect.

In FS, of course, they are all operational at the same time, and the one you receive, if any, depends on your position relative to the runway centre.

Regards

Pete

Thanks to all of you for your help.
I think the problem was due to the fact that I was tuning the ils to soon, when my aircraft was still positioned "on the other side of the rwy" making the Ils tuning the unwanted transmiter/frequency and as such when getting to the final approach (the opposite rwy) the plane was following the back course of the wrong Ils transmiter (and not changing to the good Ils transmiter, by the only highly directional characteristic of the transmiter).

Regards

Joaquim