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Low-Power 40-Meter CW Transmiter |
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| This CW transmitter has an output of up to 3 W. By using 24 V on Q2, up to 10 W output can be obtained, If a 24-V supply is used, Q1 must not see more than 12V. Connect 12V between junctions C3, R2 and L2, and remove L5. L1 should be a low-Q 18- to 20-uH inductor. R6 can be used (up to 47 ohm) to reduce the Q further. | ... |
| Parts List: | |||
| Component: | Value: | Datasheet: | Qty: |
| Resistor | 5,100 |
Not Available | 02 |
| Resistor | 100 |
Not Available | 02 |
| Resistor | 5K Pot | Not Available | 01 |
| Capacitor | 5pF | Not Available | 01 |
| Capacitor | 820pF | Not Available | 02 |
| Capacitor | 0.1uF | Not Available | 06 |
| Capacitor | 2,700pF | Not Available | 01 |
| Capacitor | 266pF | Not Available | 01 |
| Capacitor | 2,200pF | Not Available | 01 |
| Transistor | 2N2222 | Not Available | 01 |
| Transistor | IRF511 | Not Available | 01 |
| Crystal | 7MHz | Not Available | 01 |
| Inductor | 10uH | Not Available | 02 |
| Inductor | 0.38uH | Not Available | 01 |