I have a Skanti commercial solid state 250W RF amp, 1 to 30 MHz. It needs 50 volts and 5 volts supplied to it. The 5 volts is for the bias circuits. I am told they draw about 3 amps maximum. I have a good quality regulated 4 amp SMPS at 5 volts. Here is a `scope screen shot of the ripple, measured without ground lead tails on the probe, direct across the output to minimize pick up. The dots are the cursors, it's an elderly Tek 7854 analogue `scope. Is this OK to use? Or do I build a linear regulated supply? Thanks.