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7-2. Functions
a) Antenna Impedance Matching Process: automated.
b) Provides Antenna Control Interface for Automatic Antenna Selector and Tuner.
c) User tuning settings memory - nonvolatile for up to 10 antennas per frequency segment (settings for
50 Ohm default provided). On power-up, the lithium backup battery voltage is checked. The battery is
rechecked every 24 hours that amplifier remains powered up for maximum data security. If the battery
level is low, a LOW BATTERY precaution to the operator appears on the RCU.
d) Tubes: two 4CX800A (GU74B) Svetlana high performance ceramic-metal tetrodes with plate
dissipation of 800W each, grid driven, forced air cooling.
e) T/R System: QSK operation with built-in vacuum RF antenna relay.
f) Protections:
z cover interlock for operator's safety;
z inrush power-on current control;
z all supply voltages;
z control grid, screen grid, plate and heater currents;
z cooling airflow;
z exhaust air temperature - each tube separately;
z motors motion;
z T/R sequencing;
z antenna relay contacts, including RF power induced in antenna from another nearby transmitter;
z antenna matching quality;
z reflected power;
z RF arcs, including in antenna system;
z overdrive;
z unauthorized access to amplifier (password).
g) INFO BOX for 12 recent protection trips, default selections, individual amplifier's data, power-on
hours record, and remote diagnostics via phone line, PC or INTERNET.
h) Up to 3 meters remote control and display unit (LEDs for power-on and oper/stby, LED-bargraphs
for forward and reflected power, dot-matrix back-lighted alphanumeric LCD), on-board assistance and
troubleshooting suggestions etc. No controls on main unit (except for the ON/OFF main switch and
indicator).
i) All functions accessible from PC via serial port, local network functions for more than one (up to 16)
sets of amplifier / antenna units, working in a system.
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