Input Impedance: 50 ohms Load Impedance:2 to 25 ohms resistance, 200 to 1500 pF capacitance. Frequency:190 to 625 kHz with a 200 to 1500 pF load. Power Input: Up to 500 watts peak, 200 watts continuous. Metering: Antenna current and tuning. Single meter with a four position switch for OFF, TUNE, HIGH and LOW tuning. Tuning: Large coil with coarse taps, fine tapes and a rotating shorted ring controlled by the autotune system. Lightning Protection: Lightning gap at the antenna terminal. Special passive circuit that protects the transmitter final amplifier from lighting transients.
Specifications
Description
Working Conditions: Continuous unattended operation, -50 to +70 C, 0-100% noncondensing
humidity. Designed for outdoor mounting. Dimensions: 25"H, 21"W and 16"D.
Enclosure is IP66 certified.
The PC1000C Antenna Tuning Unit (ATU) is designed to withstand harsh environments encountered in offshore or desert installations. The ATU operates using control and RF signals for the SA series Low Power NDB transmitter. The large tuning coil with selectable coarse, fine and impedance taps offers uninterrupted operation over a wide frequency range and different ground conductivities for a given antenna.
