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pm3 [2007/02/24 21:02] n5na |
pm3 [2007/02/24 21:03] n5na |
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===== Description ===== | ===== Description ===== | ||
- | The Power-Mite 3 has four circuit boards with VFO transmit and receive on 40 and 20 meters. | + | The Power-Mite 3 has four circuit boards with VFO transmit and receive on 40 and 20 meters and sidetone. |
The receiver is comprised of a variable oscillator operating on the received frequency, a mixer and high gain audio amplifier. The received signal is converted directly to audio where a filter eliminates undesirable signals, and then amplified to headphone level by a high gain audio amplifier. The variable oscillator covers 7.0 to 7.3 MHz for 40 meter operation and is doubled to 14.0 to 14.6 MHz to cover 20 meters. | The receiver is comprised of a variable oscillator operating on the received frequency, a mixer and high gain audio amplifier. The received signal is converted directly to audio where a filter eliminates undesirable signals, and then amplified to headphone level by a high gain audio amplifier. The variable oscillator covers 7.0 to 7.3 MHz for 40 meter operation and is doubled to 14.0 to 14.6 MHz to cover 20 meters. |