====== Century 21 Digital Model 574 ======
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===== Description =====
Medium power solid state cw transceiver covering 80 - 10 meters. Double direct conversion receiver. Built-in AC power supply.
===== Reviews =====
*[[http://www.eham.net/reviews/detail/503|eHam]]
===== Sales Information =====
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===== Accessories =====
*Keyer Model [[670]]
*Calibrator Model [[276]]
*Crystal for 28.5 - 29.0 MHz Model [[273]]
*DC Circuit Breaker Model [[1170]]
===== Specifications =====
==== General ====
***Frequency Coverage:** 3.5 to 4.0; 7.0 to 7.5; 14.0 to 14.5; 21.0 to 21.5; 28.0 to 28.5; 28.5 to 29.0 MHz. (Crystal not supplied for 28.5 to 29.0 MHz, but available as accessory, Model [[273]].)
***VFO Frequency Stability:** less than 20 Hz change per degree Fahrenheit, averaged over a 40o change from 70o to 110o, after 30 minute warmup. Less than 20 Hz change from 105 to 125 VAC line voltage.
***Direct Frequency Readout:** 5 red LED digits, 0.3" high, accurate to nearest 1 kHz.
***Tuning Rate:** Approximately 17 kHz per revolution of main tuning knob.
***Power Requirements:** 105 - 125 VAC, 50-60 Hz. 10 watts receive, 100 watts transmit.
***Construction:** Rigid aluminum chassis and sub-panels. Aluminum case. Grey front panel, black textured vinyl cover.
***Dimensions:** HWD 6.125" x 12.5" x 12"
***Weight:** 15.5 lbs
==== Receiver ====
***Sensitivity:** 1 uV or less for 10 dB S+N/N.
***Selectivity:** Three position; 0.5, 1.0, and 2.5 kHz.
***VFO Frequency:** 5.0 to 5.5 MHz. Double Direct Conversion.
***Antenna Input:** 50 ohms, unbalanced.
***Audio Output:** 1 watt @ 8 ohms, less than 2% harmonic distortion. Built-in speaker; PHONES jack.
***Offset Tuning:** Approximately +/- 5 kHz, defeatable with ZERO BEAT switch.
==== Transmitter ====
***DC Input Power:** 70 watts
***RF Output Power:** 25-30 watts, typical.
***Output Impedance:** 50 - 75 ohms, unbalanced.
***T/R Switching:** Full break-in cw with PIN diode switch.