Description
Automatic Antenna Capacitance Tuning Using Dual Astatically Wound Loading Coils
The capacitive portion of the antenna impedance is automatically matched using dual astatically wound loading coils.
The dual astatic pair has a lower field than a single coil solution and this reduces eddy currents induced in the ATU enclosure.
Standard Adjustable Series Resistor Optimizes the Tradeoff Between Antenna Efficiency and Bandwidth
High ‘Q’ antenna systems, with narrow bandwidth, can cause undesirable sideband attenuation to the modulation frequency.
The optional internal series resistor bank allows for the insertion of resistance in series with the antenna to reduce the ‘Q’ of the antenna system and thereby increase the bandwidth of high ‘Q’ antenna systems.
Remote Control & Monitoring of the ATU to Limit Worker Exposure to Strong RF Fields
The ATU may also be controlled and monitored via the GUI to limit the operator’s exposure to the strong RF field of the antenna in keeping with Safety Code 6 / IEEE C95.1-1999.
Remote control and monitoring of the NDB transmitter and ATU is available via the optional VR-Link remote control and monitoring system.
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