Page 54 - Build Your Own Transistor Radios a Hobbyists Guide to High-Performance and Low-Powered Radio Circuits
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FIGURE 3-22 Perforated (pert) and vector boards.
It should be noted that vector and perf boards generally have 100-mil spacing,
which is suitable for mounting dual in-line integrated circuits, headers (berg
connector heads), and 7-mm coil. A 10-mm coil can be mounted as well by rotating
the coil by 45 degrees.
Copper-clad boards, while not as "permanent" in building radios, are a good choice
for building the first prototype radios (Figure 3-23). Debugging on copper-clad
boards is much easier than on vector or perf boards.
FIGURE 3-23 Copper-clad board.
Hardware
The hardware needed for the projects in this book includes 6-32, 4-40, and 2-56
nuts and bolts, along with washers (Figure 3-24). Not shown are 2.5-mm metric
screws, which are used with poly-varicons (poly-variable capacitors).
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i', ............ ,.".~" .......... " ........................... " ..... '''~ \"
FIGURE 3-24 Nuts and bolts.
The tie points shown in Figure 3-25 are useful for connecting wires.
