SDR HF radio uređaj Xiegu G90, sa manjim problemom mikrofona

SDR HF radio uređaj Xiegu G90, u originalnom pakiranju, sa papirima.
Cijena je SMANJENA radi postojanja greške u mikrofonu.
Mikrofon inače ne koristim, ne radim SSB/NFM pa je greška slučajno kasnije otkrivena pri testiranju. Uređaj se koristi samo na prijemu i za podatkovne načine rada FT8, FT4 itd
Mikrofon u stvar radi ali postoji nekakvo zviždanje dok nema govora, ako se glasnije govori tada govor prekrije to zviždanje.
Snimio sam problem pa mogu poslati video.

Ima ugrađen antenski tjuner, I/Q izlaz za spoj sa pc/zvučnom karticom za pregled šireg područja prijema, širina ovisi o kvaliteti zvučne kartice.
Kupcu poklanjam i originalni Xiegu CE19 i Xggcoms USB digimode3 , adaptere za digitalne načine rada

Osnovna specifikacija:
Xiegu G90 Features
High performance front end narrowband ESC preselector
Frequency range of 0.5~30MHz, SSB/CW/AM
1.8 inch high brightness color TFT LCD screen
±24k bandwidth spectrum display with waterfall
Software defined narrowband filter (CW mode: 300Hz)
Detachable Front Panel/Display Unit
Up to 20W of RF power
Built-in wide range automatic antenna tuner
I/Q output for interfacing with a PC or XDT1 panadapter

Xiegu G90 Receiver Parameters
RX frequency range: 0.5MHz to 30MHz
Modes: SSB/CW/AM
RX sensitivity: better than 0.25uV @12dB Sinad (PRE: ON) Machine dynamic range: 90dB
Adjacent channel suppression: 60dB
Audio output power: 0.5W@ 4Ω
Standby current: 750mA @ Max

Xiegu G90 Transmitter Parameters
TX frequency range: all amateur bands 1.8 to 30 MHz
Modes: SSB/CW/AM
RF output power: 20W
Spurious suppression: ≥50dB
Carrier suppression: ≥50dB
Sideband suppression: ≥50dB
Transmit working current: 8A @ Max

linkovi:
https://xiegu.eu/product/xiegu-g90-hf-20w-sdr-transceiver/
https://www.radioddity.com/pages/xiegu-download
https://www.radioddity.com/products/xiegu-g90-hf-transceiver?gclid=Cj0KCQjwvL-oBhCxARIsAHkOiu1dEjWlS1n8ZZDl8I49ZyGBpilW6DO1H6ChrwK8Wb93kHoWW45IRo0aAjflEALw_wcB