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CW AUDIO FILTER CW-F1 Kit

This is an acoustic filter that improves the reception clarity of amateur radio Morse communication (CW).

【Overview of this product】 ◎ This is an acoustic filter that improves the reception intelligibility during Morse communication (CW) for amateur radio and similar applications. ◎ It is a kit that requires assembly, including soldering several electronic components and securing screws (the DSP board is already completed). ◎ It incorporates a 400MHz DSP (Digital Signal Processor) with 24-bit AD/DA and a sampling frequency of 48kHz, enabling fast and high-precision signal processing. ◎ The filter bandwidth can be quickly switched in the order of pass → 400Hz → 200Hz → 100Hz → 30/25Hz → pass, allowing for rapid response to interference and fluctuations in the frequency of the other station. ◎ The CW pitch (filter center frequency) can be set in 100Hz steps within the range of 300 to 1000Hz.