23
KAT100-2 Enclosure Assembly
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The instructions on this page apply only to the
KAT100-2 (EC2 version of the ATU). If you're building a
KAT100-1, use the instructions starting on page 21.
Solder one end of each of the three
black
wires to the three pads
labeled "GND" at the back edge of the RF board. The black wires and
the approximate locations of their GND pads can be seen in Figure 14
(page 21).
Solder one end of the
longer
red
wire to the pad labeled RF IN.
Solder one end of each of the two remaining
red
wires to the pads
labeled ANT1 and ANT2.
Trim excess lead length from all of the #20 wires on the bottom
of the RF board.
The ETS2 tilt stand option for the EC2 enclosure includes two
large, round back feet for the enclosure. If you have an ETS2, install
these feet on the rear panel using the supplied hardware.
Slide the rear panel assembly onto the back edge of the RF board.
The connectors mounted on the RF board (E1, J3, J2, and J1) should
press up against the inside of the panel.
Secure the rear panel to the bottom of the RF board at the 2-D
fasteners using two 4-40 x 3/16 [4.7 mm] screws (black).
Note:
If the
holes on the bottom portion of the rear panel do not line up with the
holes in the 2-D fasteners, you may not have the rear panel pressed all
the way onto the RF board.
Look carefully at the locations of the screws holding the feet in
place. If the screws are near any component pins on the bottom of the
RF board, clip the component pins. This may require temporary
loosening of the rear panel hardware.
Secure J3 (9-pin D connector) to the rear panel using two male-
female standoffs (see Figure 13).
Do not overtighten the standoffs,
as they can easily be stripped.
Secure J2 (BNC) to the rear panel using the supplied finishing nut
and lock washer.
Secure E1 (ground terminal) to the rear panel with the 6-32
thumbscrew, 6-32 nut, and two #6 flat washers (Figure 13). The nut
must be installed between the washers and thumb screw as shown to
ensure good electrical contact.
Solder the three
black
wires to the solder lugs on J4-J6 as shown
in Figure 14.
Pass the long
red
wire that is soldered to the "RF IN" pad through
the center of toroidal transformer T1.
Solder the three
red
wires to the center terminals of J4-J6 as
shown.
Unwrap the front panel piece. Slide it over the LEDs on the
Front Panel board, then secure it to the 2-D fasteners on the bottom
of the RF board using two 4-40 x 3/16 [4.7 mm] screws (black). (These
screws were supplied with the EC2 enclosure kit.)
Attach the bottom cover and side panels that came with the
Elecraft EC2 project enclosure. (If you also have an ETS2 tilt stand,
attach that to the bottom cover first.) The EC2 kit provides the
needed hardware. The EC2 top cover will be installed later.
