The following slotted-line measurements were taken on a 50- system. With load: s = 3.2, adjacent Vmin,

The following slotted-line measurements were taken on a 50-Ω system. With load: s = 3.2, adjacent Vmin, occurs at 12 cm and 32 cm (high numbers on the load side); with short circuit: Vmin occurs at 21 cm. Find the operating frequency and the load impedance.