Rhode & Schwarz SK080 AM broadcast transmitter with classic anode/screen modulation, built in 1959. 100% tube-based, 800 watts RF, sucks 3.4 kVA (one phase!).
Radio Delta engineers refurbished this beautiful vintage transmitter. The R&S SK080 has a nice internal modulator with 2 x QB3/300 tubes. The R&S SK080 could modulate around 800 watt nom.