Ramsey Electronics FX Series Manual page 123

TX37. Install C16, 15 pf.
TX38. Install C72, 27 pf.
TX39. Install C71, 15 pf.
TX40. Install L12, the 2 1/2 turn coil prepared in stage TC. Insertion will
require you to spread the windings slightly to fit the holes. When mounting
these coils, do not allow the wire spirals to contact the PC board ground
plane area under them. The coil must sit slightly above the board and not
short against it.
TX41. Install L22, another 2 1/2 turn previously wound. Again, be sure you
don't allow the coil to
short against the ground
area.
TX42. Fabricate R113.
Locate a 1K resistor
(brown-black-red). Cut
one lead to a length of
1/4" and bend it into a
small loop as shown.
Carefully hold it straight
while soldering it to the
board. This loop will provide a handy point to attach a meter probe.
TX43. Install C63. Locate a .01 uf capacitor, bend out its leads away from
the body and insert one lead into the PC board and solder. Its other lead
will connect to the main PC board later.
TX44. Locate two scrap component leads at least 1/2" long. Solder each
lead to the PC board as shown, these leads will also attach to the main
PC board.
This completes the assembly of the low pass filter PC board, inspect the board
to be sure all leads on the bare side of
the board are trimmed neatly and that
the coils do not short against the PC
board ground plane.
TX45. Exactly when to install the
SO-239 antenna RF connector is
left to your discretion. If you are
using your own case, you must
now "wing it" on your own,
observing the way we are
mounting the connector to our
case. If you are using the Ramsey
CFX case set, mount the SO-239 to the rear panel as part of this
#4-40 nuts
Spacer nut
#4-40 Screw
SO-239 Female
Case Panel
1 02
C7
Ground Jumper