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THE RAMSEY CFX TRANSCEIVER ENCLOSURE KIT:
The CFX Kit is very obviously a fair value and solid investment for the long
term performance and worth of your transceiver. As we have mentioned, we
make it "optional" ONLY because some of our ham customers have
specialized applications requiring only the basic PC board kit. We try
whenever we can to accommodate that important do-it -yours elf spirit of ham
radio.
ENCLOSURE KIT PARTS LIST
Please check the boxes after the components have been identified, and it is
also handy at this time to “sort” the like components into groups or bins (an
egg carton does nicely) to avoid using the wrong component during
assembly.
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1 Steel bottom shell with 5 threaded PC board standoff posts
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1 Steel top shell
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1 Front control panel
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1 Rear panel with access holes to PC mounted jacks
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2 Steel side rails
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5 PC board standoff spacers
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5 #4 nuts to secure PC board on standoffs
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8 #4 screws to mount front and rear panels
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8 #6 screws for securing top and bottom to side rails
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1 large knob for Channel Selection Switch
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2 smaller knobs for Volume and Squelch controls
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4 self-adhesive rubber feet
CFX CASE ASSEMBLY PROCEDURE:
The purpose of these hardware parts is largely self-evident. We offer the
following suggestions for your convenience and to minimize wear and tear
on your factory-fresh CFX enclosure.
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1. Since the bottom shell might be used for several "test fittings" during
transceiver assembly, install the rubber feet right away to protect its
finish.
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2. Obviously, the PC board cannot be secured permanently to the
bottom section until after installation of L9, R32 and L10 AFTER
Alignment and before Transmitter tuneup.
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3. Install the strain-relief grommet supplied with the transceiver kit in its
rear panel hole. Pass the black ground wire through this grommet. The
red, fused wire will have to be unsoldered from S1 and then carefully
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the lead preventing a good solder connection, you may wish to slightly
scrape away this coating on some parts.
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TX35. Install R119a, 1K (brown-black-red).
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TX36. Install D26, 1N914/1N4148 diode, observe correct placement of
the cathode band.
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TX37. Install C71, 39 pf.
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TX38. Install C19, 56 pf.
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TX39. Install C72, 39 pf.
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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.
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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.
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TX42. Fabricate R115. 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.
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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.
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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
PC Board
Test point loop
Resistor