With these search coils, you can choose from a wide frequency range of 3.7 kHz to 27.7 kHz. In total, there are 35 available frequencies, based on 5 main frequencies that can be quickly switched. The XP X35 search coils come equipped with a new Boost mode. This is available for frequencies from 3.7 kHz to 4.4 kHz and ensures improved detection depth for highly conductive objects. This is useful for, for example, searching for ancient coins and large silver coins, significantly improving detection. For enhanced performance on such targets, XP recommends the larger coils, such as the 34/28 cm (13"x11") or the 28 cm (11") round coil.
XP X35 search coil features:
Standard Boost option - The transmitted frequency has 2 selectable levels when using frequencies from 3.7 kHz to 4.4 kHz.
The BOOST mode significantly increases the search coil's transmission power, enabling deeper detection levels if the ground conditions allow.
TX boost is a special mode; the battery life of the coil can be reduced by up to 6 hours.