Xiegu-forum -

User-submitted guides for hardware modifications, such as cooling fan additions or tuning refinements . Xiegu G90 Portable HF SDR Transceiver Operation Manual

Software-defined filters that can be narrowed down to 50Hz for CW (Morse code) operation . xiegu-forum

Guidance on connecting the radio to a PC for third-party SDR software or sound card applications . User-submitted guides for hardware modifications

Key of Xiegu devices (like the popular G90) often discussed in these forums include: Core Hardware Features xiegu-forum