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CHIRP is a free, open-source, cross-platform radio programming tool that supports a large number of transceivers from manufacturers such as Icom, Kenwood, Yaesu, Alinco, Wouxun, Puxing, and Baofeng. Chirp radio software run on Windows, Linux, and macOS, enabling users to exchange data between different radio models and interface with multiple data sources and formats. The program streamlines the configuration of memory channels, frequencies, and various settings for amateur radio handhelds. Specific models supported include the _Icom IC-7300_, _Kenwood TH-D74_, and _Yaesu FT-818_, among many others. CHIRP provides compatibility with various file formats, including Generic CSV, RT Systems CSV, ARRL Travel Plus (.tpe), and manufacturer-specific formats like Kenwood KPG-44D (.dat) and Icom Data Files (.icf). Additionally, it integrates with the DMR-MARC Database for enhanced programming capabilities. Users can download CHIRP for their platform and access extensive documentation, including a FAQ and a mailing list for support. The project encourages users to consult existing documentation and open/closed tickets before submitting new bug reports or feature requests.

Selecting a portable QRP transceiver for field operations or SOTA activations often involves weighing trade-offs between size, power output, and feature sets. This article directly compares the _Elecraft KX2_ and the _Yaesu FT-818_, two popular choices among QRP operators. It examines key specifications such as receiver sensitivity, transmit power levels, and battery life, providing practical insights into their on-air performance. The comparison delves into user interface differences, discussing the ergonomics of controls, display readability, and menu navigation for each rig. It also touches upon integrated features like internal antenna tuners and digital mode capabilities, which are crucial for efficient portable operation. The author shares personal experiences with both transceivers, highlighting their respective strengths and weaknesses in real-world scenarios. Specific attention is given to the form factor and weight, critical considerations for backpackers and those operating from remote locations. The article concludes with a summary of which transceiver might be better suited for different operating preferences.

English operating manual of the Yaesu FT-818 HF VHF UHF portable transceiver

Yaesu FT-818ND HF VHF UHF All mode portable transceiver. Announced in 2018, production of this QRP all mode portable transceiver has been discontinued some years later.

An owner point of view of the Yaesu FT-818 QRP transceiver capable to work HF VHF UHF in CW, AM, LSB, USB, FM, PACKET.