[ORAWA01]

Sure. Great points and advice. Thank you.

I have 2-3 GC radios (IC-R75 and NRD 525 and SDRPlay RSPdx ..etc), and they all work well, has good front ends I believe. They all work well with the other active antennas (PA0RDT and MLA30 and Wellbrook 1530 no problems).

I wanted to connect this spectrum active antenna to see how it will compare with the other ones. It just blasts out with MW signals from LW to MW and HF and everywhere, as soon as power on.

As I said the power unit (Bias-T) works ok with the other active antennas. But the element does exact samething with whatever power unit is paired to it.
No control for RF gain adjustment noticed in the pcb or anywhere. So guessed it has faults of some sort.

But will try with 100 ohms pot and even with the attenuator in the ATU, and will update with the results here.
Thanks.