just a question strait forward: What componnets I should choose for a low pass filter for 136 kHz and 472 kHz, two filters to be designed.
136 kHz: Pin abt 1,5 kW
472 kHz: Pin abt 0,5 kW
SWR: s = 1...2,5 when mated, in case of failure more
a five-pole low pass will probably be sufficient.
What iron powder cores or air coiles will do it, known or proofed by experiment? Diameter, marterial grade?
What capacitors? max. Voltage. High voltage caps from Wima (Ucd=4kV or 8 kV) are not available at distributors, mica capacitors will hardly fit in capacitiy value or in voltage, when in my collection.
The calculus of magnetic circuits is not a problem for me, but it is easier to start with components that will fulfill the demands.
Waiting to Your kind anwer,
DK 8 ND