untitled

SPST toggle switch, used as the on/off switch

830-pin breadboard

Seven 2-pin terminal blocks

Two knobs (for the potentiometer and variable capacitor)

8 ohm, 1 watt speaker

Enclosure

We used a wooden box that we found at a national craft supply store

(Michael’s). You can use plastic or wood but do not use metalbecause

it will block the radio signal from the ferrite antenna.

Four^1 ⁄ 2 " long 6-32 flathead screws

Four 6-32 nuts

An assortment of different lengths of prestripped, short 22 AWG wire

A few feet of 26 gauge enamel-coated wire (used to make the coil)

On/off switch Speaker

Variable capacitor Potentiometer

Figure 8-4:
More key
components.

Chapter 8: Surfing the Airwaves 171