ATU-500SR
2Pages

125 W Automatic Antenna Tuning Unit Remote Monitoring (when used in conjunction with the Nautel Vector series transmitter) Equipment Interface Maximum Carrier Power Remote control/monitoring with RS485 serial communication (DB-9 connector with 5 connections and additionally available on Maximum Peak Envelope Power Inductive tune status terminal block). DC Input (terminal block) Remote Control (when used in conjunction with a Nautel Vector series transmitter) RF input - (N connector) Antenna feeder connection (mechanical bolt) Inductive tune servo inhibit Antenna system ground Increase/decrease inductive tune (mechanical bolt) Lightning Protection Static Discharge Local Control Direct DC Ground at Antenna Feeder to assist with static discharge requirements Inductive tune servo inhibit Increase/decrease inductive tune Export packed in wooden crate Transmitter On/Off when used in conjunction with the Nautel Vector series transmitter Local Monitoring Inductive tune servo inhibited All assemblies to remain in ATU for shipment Options Sunshield to reduce thermal load Extended warranty Maximum VSWR after fixed resistive match and Auto Reactive Tune <1.25:1 at carrier frequency Frequency Range Standard band: 190 kHz to 1800 kHz Automatic Tuning Range ±5% antenna capacity variation Input Impedance 50 ohms nominal Power Requirements 24 V dc ± 5% at 1 A dc, supplied from transmitter Maximum Series Loss Resistance Not greater than 1/200 x antenna reactance Antenna System Resistance 2 to 60 ohms Inductive tune status/limit Transmitter OFF Local/remote CPU ok DC supply status

TECHNICAL SUMMARY 125 W Automatic Antenna Tuning Unit Dimensions Typical Antenna Capacitance Wall Mount Fiberglass Whip with no coil loading Insulated Tower without top loading guys Insulated Tower with top loading guys “T” Antenna (Note: span is twice height) (28 1/2” H x 25” W x 12 1/4” D) Base Mount 74.6 cm H x 60.4 cm W x 25.9 cm D (29 3/8” H x 23 3/4” W x 10 3/16” D) Weight 18 kg (40 lbs) unpacked 29 kg (86 lbs) packed Helipad Antenna IP66 rated Exceeds performance of FAA9782/1 Finish meets AAMA 603.8 an CGSB-1-GP-300 specification Compliant with Green Passport requirements MTBF...