Get ready for the FCC General Radiotelephone Operator License (GROL) exam. Study with flashcards and multiple choice questions, each with hints and detailed explanations. Prepare effectively for your licensing test!

Multiple Choice

What is the frequency range of the localizer beam system used by aircraft to find the centerline of a runway during an Instrument Landing System (ILS) approach to an airport?

The localizer, which provides horizontal guidance to align with the runway centerline, operates in the VHF aviation band from 108.10 to 111.95 MHz. This range is allocated specifically for the ILS localizer signals. The glide slope, which gives vertical guidance, uses a separate band around 329.15 to 335.00 MHz, so that range is not for the localizer. Also, the localizer frequencies are in MHz, not kHz, so the 108.10 to 111.95 MHz range is the correct one.

The localizer, which provides horizontal guidance to align with the runway centerline, operates in the VHF aviation band from 108.10 to 111.95 MHz. This range is allocated specifically for the ILS localizer signals. The glide slope, which gives vertical guidance, uses a separate band around 329.15 to 335.00 MHz, so that range is not for the localizer. Also, the localizer frequencies are in MHz, not kHz, so the 108.10 to 111.95 MHz range is the correct one.