MFJ MFJ-1020C User Manual
MFJ-1020C Active Antenna Owner's Manual
MFJ-1020C ACTIVE ANTENNA
FEATURES
The compact MFJ-1020C Active Antenna provides amplified reception of
broadcast, short wave, or amateur radio signals from 300 KHz to 40 MHz. It
can be used with the supplied telescoping antenna or with an external wire
antenna of your choice. The MFJ-1020C provides gain, selectivity, and better
reception, both at home, and as a portable unit in the field.
SPECIFICATIONS
Front Panel Indicators
ON/OFF............................ LED mounted on the front panel (activated when a
band is selected with the Band switch).
Front Panel Controls
Gain Control..................... Adjusts Gain from -10 dB to +10 dB
Bypass Switch.................. Selects bypass mode
Band Switch..................... Six P osition for OFF and 5 Bands from .3 MHz to 40
MHz
Tune Control .................... Maximizes the Gain for each of the 5 Bands
Rear Panel Connectors
Input................................. SO-239 Connector
Output............................... SO-239 Connector
AC Adapter IN................. 9-12 VDC Input @ 45 mA (3.5 mm plug)
Ground..............................Wing-nut, rear panel
Other
Frequency Coverage.........300 KHz to 40 MHz
Antenna ............................ 20" Telesco ping Antenna - mounted through hole in
the top (connected to input SO-239 connector). An
external wire ante nna plugged into the SO-239 input
requires the removal of the telescoping antenna.
Dimensions....................... 2.5” H x 6.4” W x 3.3” D
Weight..............................1 lb.
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MFJ-1020C Active Antenna Owner's Manual
FRONT PANEL CONTROLS
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MFJ-1020C Active Antenna
C
OFF
B
A
D
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E
1
5
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2
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6
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9
ON
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ABCDE
GAIN
OFF
BAND TUNE PW R
BYPA SS
1
23 4 5
1. GAIN CONTROL:.....................Adjust the gain of the MFJ-1020C from -10
dB to +10 dB.
2. BYPASS SWITCH:...................Connects the Input SO-239 directly to the
Output SO-239.
3. TUNE CONTROL:....................Optimizes Peak Tuning for each of the 5
bands.
4. BAND SWITCH:.......................P ower rotary switch that selects the 5 bands
from 300 KHz to 30 MHz.
5. POWER LED.............................Illuminates when power is on.
REAR PANEL CONNECTIONS
MFJ ENTERPRISES, INC.
STARKVILLE, MS USA
INPUT
OUTPUT
PO W ER
9-12 VDC
+
6789
6. POWER: .........................3.5mm barrel connector for power to MFJ-1020C
9-12 VDC with center positive. Inserting the plug
into the rear jack automatically disconnects the
internal battery. MFJ offers an optional 12 VDC
adapter (AC-12).
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