Look on Ebay for tubes, but buyer beware.
There is a single Freescale RF amplifier transistor that is capable of 1200 watts ouput, available now. Don't know what the price is, but would be interested to find out.
There is a single Freescale RF amplifier transistor that is capable of 1200 watts ouput, available now. Don't know what the price is, but would be interested to find out.