1. Grids are designed to supply voltages at largely constant amplitudes . 2. Vack�Y analyzes the circuit and explains how to get an approximately constant amplitude response. 3. The PM envelope ) is constant amplitude . 4. A single FM signal is constant amplitude , so it can saturate a transponder without distortion. 5. In a homogeneous wave, the surfaces of constant phase are also surfaces of constant amplitude . 6. The control system has to steer the antenna such that a constant amplitude return is received from the target. 7. The tide heights are expected to follow the tidal force, with a constant amplitude and phase delay for each component. 8. AFL produces characteristic saw-toothed F-waves of constant amplitude and frequency on an ECG whereas AF does not. 9. For signals with a nearly constant amplitude the echo threshold can be enhanced up to time differences of 1 to 2 seconds. 10. A pendulum swinging in a vacuum without friction, at a constant amplitude free of external disturbances, theoretically keeps perfect time.