The whole timing of the DAB system relies on this number.

It stands for the **clock frequency of 2048 kHz**, from where all other timing is derived.

The heart of DAB, the COFDM modulation, is based on **2048 samples** @ a sample rate of **2048 kHz**, resulting in a symbol length of 1 ms.

1 ms is related to the distance of 1 kHz of all the carriers. It is the condition to obtain orthogonal carriers which will not have any carrier interference between each other.

The symbol of 1 ms corresponds to **2048** times the clock period of **2048 kHz**.

**1/2048 kHz * 2048 = 1 ms**

The number **2048** is the number on which DAB is built and will pop up in many technical articles about DAB.

The clock period indicated by the letter T equals 1/**2048** kHz or 0,48828125 µs.

It is essential to understand the above to understand DAB’s working principles.