If my FP29 power supply for my FT1000MP MKV were to fail........ As I understand, the 2 voltages supplied are 30 vdc & 13.8 (12vdc). Could I use a combination of say an Astron 30vdc 18amp & my Astron 12vdc & put the MP back on line ? Or is there some other voltages etc involved ? Ed KG4W