User's Manual

viii
INTRODUCTION
The model 417 TITAN III is an advanced design linear amplifier using two
4CX800A high power tetrodes in a grid driven configuration. This amplifier uses
a ducted forced air cooling system and operates easily at 1500 watts output with
maximum efficiency of 65% .
Two panel meters provide system monitoring. One meter is dedicated to full
time plate current measurement. The other meter is switchable among plate
voltage, screen grid current, forward power, or reflected power.
Two front panel LEDs indicate overdrive conditions for the control grid and
screen grid circuits. Plate current overdrive trip is provided at 1.5 amps.
Band coverage includes 160, 80, 40, 30, 20, 17 and 15 meters as shipped from
the factory. With proof of authorization, 12 and 10 meters may be enabled with an
optional matching network from TEN-TEC.
Primary power of 240 VAC is required. Remember, tune-up at 1500 watts
output and 240 VAC line voltage can require up to 20 amps line current. The
TITAN III primary AC lines are fused at 20 amps. ABC-20 fuses or equivalent
must be used in replacement to protect the tubes. Interlocks on the high voltage
power supply are provided to ensure operator safety. NEVER DEFEAT THESE
SAFETY PRECAUTIONS !!!!