[G6Tanuki]

While a SMPS would be the 'obvious' way to go, I need this particular supply to be friendly and unobtrusive when operated alongside HF/VHF radio gear - so anything that raises the noise-floor is definitely a no-no.

While I know that SMPS *can* be made instrumentation-grade and RF-quiet, the hassle of buying one, finding it's noisy, and doing the whole sending-it-back-for-a-refund-and-buying-another-which-could-be-equally-noisy thing will invariably cost more of my time/raise my blood-pressure more than any potential energy-saving from SMPS over Linear.