MFJ-1026 Instruction Manual Deluxe Noise Canceling Signal Enhancer
5
RADIO:
This SO-239 has a direct connection to the MAIN ANTENNA connector when power is
removed, if the external T/R CONTROL jack is grounded, or transmitter power is applied. This
connector should always be connected to the receiver's input connector or to the transceiver's "antenna"
connector.
T/R CONTROL:
We STRONGLY recommend using this phono connector to switch the MFJ-1026 to
the transmit (or bypass) mode. The MFJ-1026 switches out-of-circuit whenever this line is pulled low
(below one volt). Never apply negative voltages, or voltages over 15 volts positive, to this jack.
WARNING: We strongly recommend using this connection to switch the MFJ-1026 into the
transmit mode!! Many radios have sharp transmitter rise times or power pulses
that, at times, cause damage to the MFJ-1026.
AUXILIARY ANTENNA:
This SO-239 and the phono jack to its immediate right are inputs for the
auxiliary receive or noise antenna system.
POWER:
This 2.1mm coaxial power connector requires a nominal supply voltage of twelve volts at
approximately 150 mA. The center pin is positive.
CAUTION:
Do not reverse the power connections or damage will result. Remember, the center pin is
positive, and the outer shell is negative.
Front Panel Controls
The MFJ-1026 has several user controls on the front panel. From left to right, the front panel controls
are:
POWER ON/OFF:
This switch turns the main power off and on. In the OFF (out) position, the MFJ-
1026 is bypassed. The RADIO and MAIN ANTENNA connectors have a direct connection between
each other whenever power is removed or this switch is turned off.
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