Consider the following statements regarding a cavity wavemeter in a reaction type of circuit as shown in Fig.
1. The distance d is made either zero or approximately a guide half-wave length, so that an effective short circuit appears at the waveguide wall when the cavity is at resonance.
2. A dip in the load power occurs as the wavemeter is tuned through resonance.
3. The magnitude of the cavity impedance depends only on the distance d.
4. The magnitude of the power dip depends only on the Q of the cavity.