This is the one I'm using........24.49 on Amazon. Works for 220 or 110 volt. Only problem I have is I need to extend the antenna outside the hanger for better reception but I'm still able to taxi up and raise my door without shutting down or getting out of the plane. Then I just taxi right into the hanger. http://www.amazon.com/gp/product/B00YUBB2WU?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00