Re: Tx with sweep valves
These are lower voltage/higher current devices than the usual RF power valves, so you'll need some different values in your Pi-network to load them up appropriately.
I believe Steve Webb of CobWebb antenna fame published a sweep toob linear of very light weight using a voltage-multiplier/rectifier mains transformerless PSU. safety isolation was by RF transformers. G3TXQ.
There is also the 'Frinear' with 4x PL519 by PA0FRI
Might be worth looking at, but I'd use a mains transformer.
David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
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