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58. Install C24, .001 uf [marked .001 or 102].
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59. Install C25, .001 uf [marked .001 or 102].
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60. Install C26, .01 uf [marked .01 or 103 or 10nf].
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61. Install L4, the 450 KHz quadrature coil, soldering the two pins
and the two mounting tabs.
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62. Install U2, the MC3359 IC. As in the case of the NE602 IC, you
could choose to install an 18-pin IC socket rather than soldering the
IC directly. Re-read the previous discussion of IC sockets offered for
the installation of U1. Larger IC's such as the MC3359 require
considerably more care in socket insertion.Notice that the end of the
IC marked by a band or dot and must be oriented correctly as shown
on the PC parts layout diagram. Solder each of the 18 connections
carefully. Make sure you have good lighting as well as good
technique to make sure that no solder "bridges" flow between the
connections.
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63. Install C22, 100 pf [marked 100 or 101].
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64. Install C16, .01 uf [marked .01 or 103 or 10nf].
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65. Install C17, .01 uf [marked .01 or 103 or 10nf].
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66. Install C21, .01 uf [marked .01 or 103 or 10nf].
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67. Install C18, 220 pf [marked 220 or 221].
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68. Install C19, 22 pf.
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69. Install Y1, the 10.24 MHz. crystal. No special procedure is
required. Simply press the crystal firmly into its holes as far as it
will go, and make good solder connections.
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70. Install FL2, the 450 KHz filter. Its three leads are delicate, and
fit in only one way.
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71. Install C23, .001 uf [marked .001 or 102].
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72. Install C27, 1 uf electrolytic, observe correct polarity.
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73. Install D2, the 1N914/1N4148 signal diode, observe correct
orientation of the banded cathode end.
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74. Install R16, 100K ohms [brown-black-yellow].
FR-10 ? 18
RAMSEY "Learn-As-You-Build" KIT ASSEMBLY:
We have a twofold "strategy" for the order of the following kit assembly
steps. First, we install parts in physical relationship to each other, so
there's minimal chance of inserting wires into wrong holes. Second,
whenever possible, we install in an order that fits our "Learn-As-You
Build" Kit building philosophy.
FOR EACH PART, OUR WORD "INSTALL" ALWAYS MEANS THESE
STEPS:
1. Pick the CORRECT part value to start with.
2. Insert it into the CORRECT PC board location.
3. ORIENT it correctly, which means: PLEASE follow the PC board
drawing and the written directions for ALL parts where there's a
right way AND a wrong way to solder it in. (Diode bands,
electrolytic capacitor polarity, transistor shapes, dotted or
notched ends of IC's, and so forth.)
4. Solder ALL connections unless directed otherwise. Use enough heat
and solder flow for clean, shiny, completed connections. Don't
be afraid of ANY pen-style soldering iron having enough heat to
damage a component.
5. Trim or "nip" excess wire lengths after soldering.
NOTE: Save some of the longer wire scraps nipped from resistors and
capacitors. These will be used to form wire jumpers (JMP1, etc.) to be
soldered in just like parts during these construction steps.
Now, let's start building!
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1. Press S1 firmly into its six holes and solder all six pins. The
switch fits the board only one way. Ignore the other set of six
solder connectors on the switch.
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2. Install J1, the RCA-style antenna jack. Solder all 4 points.
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3. Install J2, the subminiature phone jack. Solder all three points.
Be gentle and patient in inserting, so as not to damage the
solder tabs.
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4. Install controls R1, R2 and R3. Insert the three PC mounted
controls into their positions. Check that the controls are pressed
in firmly and straight against the top of the board. Solder the three
FR-10 ? 11
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