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This interface integrates audio codec, CAT control, and PTT switch functions via a single USB connection to a computer. It operates on HF, VHF, and UHF bands. It is suitable for popular digital modes such as FT8, FT4, JS8Call, RTTY, SSTV, WinLink, APRS, VaraHF, VaraFM, and Soundmodem. It enables full-featured CAT control in compatible transceivers and offers dependable PTT adjustments with HTs and basic mobile radios. Pre-assembled transceiver cables are offered for popular brands including Yaesu, ICOM, Kenwood, Elecraft, Baofeng, Xiegu, Lab599, and others. Guidance for constructing a simple homemade cable is accessible in the community forum. The interface works with all major operating systems: Windows, macOS, and Linux. A driver update might be required on certain systems; please consult the supplied instructions. The CAT interface in this device is pre-set for logic levels and can be adjusted to RS-232, TX-500, or CI-V standards. For more details, tutorials, and troubleshooting, please access the community forum. You may also ask questions in the Q&A section. Thank you for your attention. I look forward to hearing you on the air. 73 de K0TX