RTL-SDR actieve L-Band 1525-1660 Inmarsat naar Iridium patch antenne set

Very strange but there is no indication about the power voltage. So I tried with 5VDC, no result. OK if the voltage is 9VDC or more.
While opening the case, there is a indication on the printing board: "5VDC at the SMA input". What is not possible because there is a voltage regulator on the board (78L05 probably...) So, you need more then 5VDC to powered correctely the system... Très satisfait de la rapidité de livraison.