claim: Eurotas (river) is Laconia's main river.
evidence: In telecommunications , attack-time delay is the time needed for a receiver or transmitter to respond to an incoming signal .. telecommunications. telecommunications. receiver. Receiver ( radio ). transmitter. transmitter. signal. Signalling ( telecommunication ). For a receiver , the attack-time delay is defined as the time interval from the instant a step radio-frequency -LRB- RF -RRB- signal , at a level equal to the receiver 's threshold of sensitivity , is applied to the receiver input , to the instant when the receiver 's output amplitude reaches 90 % of its steady-state value .. receiver. Receiver ( radio ). time interval. time interval. step. step function. radio-frequency. radio-frequency. signal. Signalling ( telecommunication ). sensitivity. sensitivity ( electronics ). amplitude. amplitude. steady-state value. steady state. If a squelch circuit is operating , the receiver attack-time delay includes the time for the receiver to break squelch .. receiver. Receiver ( radio ). squelch circuit. squelch circuit. For a transmitter , the attack-time delay is defined as the interval from the instant the transmitter is keyed-on to the instant the transmitted RF signal amplitude has increased to a specified level , usually 90 % of its key-on steady-state value .. transmitter. transmitter. signal. Signalling ( telecommunication ). amplitude. amplitude. steady-state value. steady state. keyed-on. Keying ( telecommunications ). The transmitter attack-time delay excludes the time required for automatic antenna tuning .. transmitter. transmitter. antenna. antenna ( electronics ). tuning. tuner ( radio )