MFJ-462B MultiReader
2
MFJ-462B MultiReader
TM
Specifications:
Modes:
CW, RTTY, ASCII, AMTOR FEC
NOTE: Reverse mode selectable for RTTY,
ASCII, and AMTOR
Shifts:
RTTY: 170 Hz, 425 Hz, 850 Hz
ASCII: 170 Hz
AMTOR FEC: 170 Hz
Mark Frequency:
US RTTY 2125 Hz
European RTTY 1275 Hz
NOTE: US or European frequency jumper-
selected.
Baud Rates:
CW: Approximately 50 WPM max.
RTTY: 45, 50, 57, 75, 100
ASCII: 110
AMTOR FEC: 100
Printer:
Must be EPSON or compatible
MessageSaver™:
8000 characters volatile RAM
Code Practice:
Straight key CW decoding
Connections:
Power
A 12 VDC 300 milliamp power supply should be used with the MFJ-462B. The POWER jack accepts a 2.1 mm
coaxial plug with the center conductor positive and the sleeve negative. An optional DC supply, the MFJ-1312B, is
available from MFJ. Connect your MFJ-1312B Power Adapter or compatible DC supply, coaxial line with shield
ground, into the POWER jack on the rear of the MFJ-462B.
Printer Port
A DB-25 connector is located on the MFJ-462B for use with an EPSON compatible printer. An optional DB-25 to
Centronics printer cable, the MFJ-5412, is available from MFJ.
Audio Input
There are two methods of feeding audio into the MFJ-462B Multi-Reader. The 3.5 mm mono jack, labeled
AUDIO INPUT, can be used with a cable, using the tip as audio and shield as ground. An optional 3.5mm audio
cable, the MFJ-5162, is available from MFJ. The 5-pin DIN jack can be used with a cable using pin 4 as audio
and pin 2 as ground. This connection scheme matches popular TNC connections so that you may use ready-made
TNC cables.
Hand Key
A hand key may be used with the MFJ-462B for CW code practice. Connect your hand key to the 3.5mm HAND
KEY jack on the rear, with the tip to the key and the shield to ground. To listen as you practice your code, place
the SPEAKER SELECT switch on the rear panel IN to the HANDKEY position. For normal operation, this
switch should be in the RADIO (OUT) position.
Jumpers
Jumpers J6, J7, and J8, located inside on the right side of the unit, are for setting either the US or European RTTY
frequency shifts. The unit comes with pins 2 & 3 of each jumper shorted, for use with the US RTTY shifts. If you
require the European RTTY shifts, then short pins 1 & 2 of J6, J7, and J8.
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