XHDATA D-109 does not like external antennas it gets spurious signals and overload

FM Radio sidemount dipole, aluminium, 87.5-108MHz, 500W, 0dBd - 1.4m - ZCG Scalar

RADIO-TIMETRAVELLER: A Review Of The XHData D-109 DSP Radio

FM Radio sidemount dipole, aluminium, 87.5-108MHz, 500W, 0dBd - 1.4m - ZCG Scalar

Radars – Getting Smaller, Lighter and Cheaper By Julian Nettlefold

XHDATA D109WB Portable Radio AM/FM/SW/LW/WB Weather Radio Shortwave Radio Receiver with NOAA Alert, Battery Operated Great Sound Wireless BT Mp3 Speaker, SOS Alert Alarm Clock Sleep Function : Electronics

XHDATA AN-80 External Antenna Suitable with all Radios Improve listening quality

Australian Radio DX Club

XHDATA D-109 Antenna repair - Help replace the same : r/shortwave

Anomalous Velocity Signatures in Low Level Super Resolution Data. - ppt download