| http://www.w3.org/ns/prov#value | - Fig.7 was taken with the controls set fully clockwise; as expected from fig.5, the second harmonic is the highest in level, the third 20dB lower, and all other harmonics are either absent or approach -100dB. At RD's preferred control settings (fig.8), the second harmonic has doubled in level, going from -46dB to -40dB (0.5-1%), and has been joined by higher-order components, though it is fair to n
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