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Power triodes under load

Most popular The photo fills the whole card. Your callsign and contact details go on a light or dark panel over it, and you can choose which at the design step.

Power triodes under load as a card, with a sample station on the dark panel

A sample station on the dark panel. The design step lets you choose the other panel or change the dimming. The bare photo is below.

Power triodes under load, full size

Photo: Original art made for QSL.now with Claude (Anthropic). Free to use on your cards.

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