Figure 4.

(a) Q_exptl as a function of cable length in units of wavelength. Green circles: Measured Q_exptl. Q_exptl was calculated using the tuning frequency (all were done at CTO frequency), divided by the width of the tuning curve at half height from the baseline. Blue line: Simulated Q_exptl. (b) Resonance frequency shift at CTO as a function of coaxial cable length in units of wavelength. Green circles: Measured values. Blue line: Simulation. (c) Frequency shifts of water proton noise signals using a 2.0λ coax cable length. The frequency shift is plotted as a function of tuning offset f_T − f_SNTO for values in the range of −1,000 kHz < f_T − f_SNTO < 1,000 kHz.