Search manufacturer website or ham-radio documentation repositories for "ATS-25 manual PDF" to download the official PDF.
If you cannot open the PDF, here are the essential operation instructions found in the manual: ats-25 radio manual pdf
The ATS-25 is not your grandfather’s analog transistor radio. It is a complex DSP-based receiver that covers a wide frequency range (typically 100 kHz to 30 MHz for HF and 64-108 MHz for FM). Without the manual, users often struggle with: A genuine PDF manual is searchable, zoomable, and
A genuine PDF manual is searchable, zoomable, and often contains schematics or button combinations that aren't obvious from the interface alone. A genuine PDF manual is searchable
The ATS-25 covers 100 kHz to 30 MHz (continuous) and also includes the FM broadcast band (64-108 MHz). However, a strange note in the manual explains that the amateur radio 40-meter band (7.0-7.2 MHz) is often the strongest due to the physical length of the included whip antenna. The manual teaches you how to compensate for lower bands using an external wire.