Restored an old Dummyload Wattmeter from 1966 and i was able to fix the Powermeter.
50 Ohm 100WN https://go.tonyalbus.com/Dummy50N
50 Ohm 100Watt https://go.tonyalbus.com/dummy100
50 Ohm 250Watt https://go.tonyalbus.com/dummy250
50_Ohms-BNC https://go.tonyalbus.com/50A
50_Ohms-BNC-inline https://go.tonyalbus.com/50B1
50_Ohms-BNC-inline https://go.tonyalbus.com/50B2
#Philco #sierra #401A-500L