3.5mm headphone jack and built-in 8-ohm 1W speaker Antenna Interface: BNC female (50-ohm impedance) Power Source: 3.7V / 1200mAh internal Li-ion battery Charging Port: Type-C USB (5V charging input) 2. Interface and Controls Layout
Cycle through available bandwidth options (e.g., 1.2kHz, 2.2kHz, 3.0kHz, 4.0kHz, 6.0kHz for AM/SSB).
User Experience and Accessibility Good manuals use clear language, consistent terminology, and avoid jargon where possible. Diagrams should be labeled and readable; photographs of key components help non-technical users. Multilingual support, printable PDFs, and searchable digital formats increase accessibility. The manual should note firmware update procedures if applicable.
