Inductive transmission enables users of hearing aids with additional induction coils to receive sound signals. The loop should be laid so that it encloses the intended usable area. The power requirement depends on the area of the reception field, its nature and the way in which the loop is laid. As a guideline, 0.1 W/m can be expected, although in reinforced concrete structures the requirement can increase to around 0.3-1 W/m. The provisional laying of a test loop provides information about this, as well as about possible interference. For large areas, it is advisable to divide the area into sub-areas. When using the ST 50 (G), the impedance of the loop should be between 0.5 and 2 ohms. This corresponds approximately to the direct current resistance. When using multi-core cables, the resistance can be adjusted by connecting the individual cores in parallel or series. In order to be able to adjust the loop field optimally, a separate power amplifier is recommended. , ST 50: Incl. two brackets for mounting in a housing. , ST 50 G: Built into a plastic housing, incl. multi-pin connection strips.
