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7 MHz SSB Transceiver

7 MHz Transceiver Advice for beginers Winding Coils Test Equipments
Power Supply Variable Frequency Oscillator Carrier Oscillator Audio Amplifier
Mic Amplifier Receiver Front End MC1496 Ladder filter
IF Amplifier Linear Amplifier Power Amplifier Block Diagram
Circuit - Part 1 Circuit - Part 2 Antenna Conclusion


Carrier oscillator is a crystal controlled oscillator using two numbers of BC548. The circuit does not use any coils or turned circuits. First BC548 is used as oscillator second BC548 is used as buffer. The carrier oscillator frequency is offset by 1.5 KHz above ladder filter (IF) frequency. The carrier oscillator frequency can be varied slightly by adjusting the trimmer in series with the crystal. The metallic enclosure of the crystal should be grounded for increased frequency stability.

Beat Frequency Oscillator, Carrier Frequency oscillator.

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