3. Controls / Connectors
FRONT PANEL CONTROLS
1. POWER / SWRINDICATOR
Dualbargraph LEDindicator displays FORWARD power in watts and SWR.
2. DISPLAY SWITCH
A two position button turns the LED bargraph on and off. The “on” condition
is indicated by the lighting of the left-hand green LED.
3. RANGE SWITCH
Two-position switch selects the range of FORWARD and power displayed
on the LED indicator. When the RANGE button is out, the FORWARD meter
scale reads 140 watts full scale in 10 W increments. When the RANGE button
is in, the FORWARD LED scale reads 1400 watts full scale in 100 W
increments
When the RANGE button is out, the FORWARD meter scale reads 300 watts
full scale and the REFLECTED meter scale reads 60 watts full scale. When
the RANGE button is in, the FORWARD meter scale reads 3000 watts full
scale and the REFLECTED meter scale reads 600 watts full scale.
4. DIRECT / TUNED MODE SWITCH
Six-position rotary switch selects an output coaxial connector.
DIRECT BYPASS selects BYPASS COAX connector bypassing the
impedance matching circuit but providing SWR, FORWARD and REFLECTED
power meter readings.
DIRECT COAX 1 selects COAX 1 connector bypassing the impedance
matching circuit but providing SWR, FORWARD and REFLECTED
meter readings.
DIRECT COAX 2 selects COAX 2 connector bypassing the impedance
matching circuit but providing SWR, FORWARD and REFLECTED
meter readings.
TUNED COAX 1 selects COAX 1 connector through the impedance
matching circuit.
TUNED COAX 2 selects COAX 2 connector through the impedance
matching circuit.
TUNED WIRE/BAL selects the END FED WIRE connector through the
impedance matching circuit. For balanced antennas, the wire antenna post
(marked 6 in the figure below) must be externally connected to the balanced
line (lower post of item 4 in the figure below) using a wire jumper.
5. INPUT
Continuously adjustable input capacitor.
6. INDUCTOR
28 µH continuously variable ceramic roller inductor driven by a crank handle.
Coupled to the crank handle is a gear-driven precision mechanical counter.
REAR PANEL CONNECTORS
1. 12 V DC INPUT ( 2.1 mm plug )
To adaptor (center positive) to illuminate SWR meter (there is a 10VDC
regulator used to stabilize and illuminate the meter)
2. RF INPUT
Coaxial connector for input from SWL receiver or transmitter.
2
1
6
8
5
7
3
4
3
2
1
2
3
6
5
4