SOTABEAMS has introduced a range of digital audio filter modules that are designed to help improve the performance of older transceivers and kit radios. Each module has two high-performance filters and the narrow filters include a neat tuning indicator. The modules are ready-built and easy to use. Given SOTABEAMS portable background, they also have a low current requirement making them suitable for battery powered equipment. Details here. SOTABEAMS ship Worldwide from their UK factory.
