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Earth Radio short-form kit
This kit contains most of the parts you need to build the Earth Radio. It includes the PCB and virtually everything that mounts on it. You will need to add the case, battery, power supply and antenna parts (except the jack plug, which included).
See the link immediately below for a complete list of parts in the kit.
Note: the photo shows the assembled PCB.
| Cat No SC7582. Price: AUD $55.00 1 |
In stock:  yes (25 available). Estimated dispatch time: 1-3 days | | Related to: Project: Earth Radio, Part 1 (December 2025 [print issue]) |
Other items relevant to this project: |
Kit parts list | 2 × 100kΩ top-adjust multi-turn trimpot |
| 1 × 2kΩ top-adjust multi-turn trimpot |
| 2 × subminiature SPDT momentary horizontal toggle switch (Altronics S1421) |
| 2 × 50kΩ top-adjust multi-turn trimpot |
| 1 × 10kΩ top-adjust multi-turn trimpot |
| 1 × 16mm 10kΩ logarithmic single gang potentiometer (18t spline shaft) |
| 1 × Earth Radio PCB [06110251] |
Connectors | 1 × 14-pin DIL dual wipe IC socket (DIP-14) |
| 2 × 8-pin DIL dual wipe IC socket (DIP-8) |
| 3 × 3.5mm stereo jack socket, DPST switched, transparent top |
Semiconductors | 1 × BC327-40 50V 0.8A PNP transistor (TO-92) |
| 1 × BC337-40 50V 0.8A NPN transistor (TO-92) |
| 1 × 3mm red diffused LED |
| 1 × 1N5819 40V 1A schottky diode (DO-41) |
| 2 × 1N4148 75V 200mA diode (DO-35) |
| 1 × TL072CP dual JFET-input op amp IC (DIP-8) |
| 1 × OP07CP precision op amp IC (DIP-8) |
| 1 × TL074CN quad JFET-input op amp IC (DIP-14) |
Through-hole Capacitors | 2 × 1.5nF 63/100V MKT |
| 4 × 47nF 63/100V MKT |
| 1 × 470µF 16V low-ESR electrolytic capacitor |
| 3 × 100µF 16V low-ESR 105°C electrolytic |
| 1 × 22µF 50V 105°C electrolytic |
| 1 × 2.2µF 63V low-leakage electrolytic |
| 1 × 1µF 50V electrolytic |
| 3 × 100nF 100V MKT |
| 1 × 33nF 63V MKT |
| 1 × 1nF 100V MKT |
| 1 × 15pF 50V ceramic disc |
Through-hole Resistors | 1 × 1.5kΩ ±1% ¼W |
| 2 × 30kΩ ±1% ¼W |
| 1 × 82kΩ ±1% ¼W |
| 1 × 100kΩ ±1% ¼W |
| 7 × 10kΩ ±1% ¼W |
| 2 × 4.7kΩ ±1% ¼W |
| 2 × 1kΩ ±1% ¼W |
| 1 × 620Ω ±1% ¼W |
| 1 × 150Ω ±1% ¼W |
| 2 × 1Ω ±1% 0.5W or 0.6W |
Cable & Hardware | 1 × 3.5mm stereo jack plug |
| 1 × 100mm, black cable tie |
| 1 × 9V battery holder clip |
| 1 × 9V battery snap (I-type) |
| 1 × 5mm blackened metal panhead M3 screw |
| 1 × Stainless or carbon steel M3 hex nut |
| 1 × Medium, white face knob |
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