Codan and car acceleration

Hello



I have codan NGT SRx installed in my car, I found that while using 9KHZ frequency and specifically when calling another station, while this call and while the car is moving , the car acceleration goes down ( RPM goes to 0 ) and the car stopped responding to speed pedal !





while using another frequency, like 5K or 11K there is no issues !



Can anyone help me please ?



Thanks,

Codan and car acceleration