Signal generator amplifier using only positive pole output, underperforming Electrical Advice

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Signal generator amplifier using only positive pole output, underperforming Discussion ThreadSignal generator amplifier using only positive pole output, underperforming Electrical Advice

I have a 100W 50 ohms signal generator amplifier with a 35 meters coil wire (1.5 mm) as a load, BNC connectors. The requirement is that only the BNC POSITIVE pole is connected to the wire and used as antenna. The amplifier require a minimum of 4 ohms load. This is not a closed circuit antenna, although the negative pole touches the end of the antenna, isolated electrically.... yet no closed circuit. The problem is that I'm consuming only 10W (tested with a Tuya socket) out of maxim 100W capacity, and the amplifier's radiator is heating normally to overheating. It does the job, but how can I get more juice out of it, not only 10W measured output ?

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