Which indicator on the Radar Set Control Panel (RSC) shows that the transmitter is in the "warm up delay" cycle?

The indicator that signifies the transmitter is in the "warm up delay" cycle is clearly marked as "XMTR WARMING." This designation specifically communicates to the operator that the radar transmitter is currently engaged in a preliminary phase of operation, necessary for preparing the system to transmit accurate and effective radar signals. This warm-up period is crucial, as it allows the transmitter to reach the appropriate temperature and operational readiness for effective performance.

The other indicators do not specify this particular phase. "TRANSMITTER ACTIVE" suggests that the transmitter is fully operational and actively sending out signals, while "POWER STANDBY" indicates that the system is powered on but not actively transmitting. "WARM UP IN PROGRESS" could imply that a warm-up is happening, but it is not the standardized term used on the Radar Set Control Panel to indicate this specific state.