Vectronics VC-300M User Manual

VC-300M Antenna Tuner Owner's Manual

Vectronics VC-300M Antenna Tuner

FEATURES

The Vectronics VC-300M Antenna Tuner optimizes the performance of your antenna and
transmitter, receiver, or transceiver by providing adjustable impedance matching. The
VC-300M also measures the Power and Standing Wave Ratio (SWR), allowing you to
adjust for the lowest possible ratio for the selected transmit frequency. The VC-300M
utilizes a precision frequency compensated lighted dual movement SWR/Power meter
which can show either peak or average readings.

SPECIFICATIONS

FRONT PANEL INDICATORS

Meter ....................................Dual movement lighted cross needle Power and SWR meter.

FRONT PANEL CONTROLS

TRANSMITTER Tuning .....Continuous rotation capacitor

ANTENNA Tuning..............Continuous rotation capacitor

INDUCTANCE....................48 Turn Switched Rotary Inductor

RANGE................................2 position switch: 30W/300W

METER ................................2 position switch: PEAK/AVG

LAMP...................................2 position switch: ON/OFF

REAR PANEL CONNECTORS

INPUT..................................SO-239 Connector

OUTPUT..............................SO-239 Connector

12 V AC/DC.........................2.5 mm Barrel Connector

GROUND.............................Post/Wingnut

OTHER

Frequency Coverage.............1.8-30 MHz

Power....................................150 Watts Continuous; 300 Watts pep, SSB

Dimensions...........................3.6" (92 mm) H x 7.25" (184 mm) W x 8.75" (222 mm) D.

Weight..................................2.5 lbs. (1.15 kg)

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VC-300M Antenna Tuner Owner's Manual

CONTOLS / CONNECTORS

FRONT PANEL FUNCTIONS

1. TRANSMITTER
Continuously adjustable input capacitor

2. POWER / SWR METER
Dual needle meter displays FOWARD and REFLECTED Power in Watts.

The SWR in measured where the two needles intersect on the red scale.

3. ANTENNA
Continuously adjustable output capacitor.

4. INDUCTOR
48-position rotary switch to vary inductance.

5. RANGE
Two-position push button switch selects the range of FOWARD and REFLECTED

Power displayed on the power meter.

When the RANGE switch is OUT, the FOWARD meter scale reads 300 watts full

scale and the REFLECTED meter scale reads 60 watts full scal e. When the switch i s
IN, the FOWARD meter scale reads 30 watts full scale and the REFLECTED meter
scale reads 6 watts full scale.

6. LAMP
Two-position push button switch turns the lamp ON or OFF.

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VC-300M Antenna Tuner Owner's Manual

REAR PANEL CONNECTORS

1. TRANSMITTER IN
Coaxial connector for input from SWL receiver or transmitter.

2. ANTENNA
Coaxial connector for output.

3. 12V AC/DC
Barrel connector for meter lamp power.

4. GROUND
Post/Wing-nut type ground connector.

INSTALLATION

Carefully unpack your VC-300M from the packing carton and inspect it for signs of
damage. If any damage is apparent, notify the transportation carrier or dealer
immediately. We recommend keeping the packing carton for moving, storage, or
reshipping the tuner.

Select a location for the VC-300M that allows the connectors to be free of any possible
contact during operation.

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