Antenna Tuner System AT-615B Description
This tuner is designed to match remotely, balanced HF antennas. This unit features
automatic selection of tuner settings based upon transmitted frequency. Unique to this
tuner, no special cabling or adapters are required. The operator simply transmits into the
antenna and the tuner detects the transmitted frequency and selects the correct settings
from memory. The Ham bands are divided into 85 operator programmable memory
locations. It will handle 1500 watts of SSB or CW power, and it can be used in either
automatic or manual mode.
The matching circuit consists of a remotely tuned balanced
π
circuit. The balun is placed
at the input of the tuner. The Output capacitor is a stepper motor controlled High Voltage
variable capacitor.
The Control Cabinet contains the tuning controls, memory location selection, Automatic or
Manual switching and a display that indicates the memory location in use, the frequency
range as well as the span, and the tuner settings.
Tuner System Block Diagram
Transceiver
SWR Meter
Control Cable
Coax 50 Ohm
AT-615B Automatic
Controller
HF-Sensor
RF Probe
AT-615B
Tuner
Antenna
max. 40m (120 ft)
RF Outdoor
Unit
Power Amplifier
Steuerung Endstufe
Key Line
max. length 15 cm
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