1. MW reflex radio.
2. FM radio with Phase-locked loop.
3. Regenerative receiver.
4. Regenerative detector.
5. SW AM regenerative radio with automatic regeneration control.
6. FM radio with Phase-locked loop.
7. FM regenerative radio with low voltage power supply.
8. Circuit diagram of spark-gap CW transmitter from "Aurora" cruiser.
9. DSB modulator based on varicaps.
10. FM regenerative radio circuit schematic.
11. FM regenerative radio with AM suppression.
12. Regenerative receiver with automatic regeneration control.
13. MW receiver circuit diagram.
14. Super regenerative receiver.
15. SW regenerative receiver.
16. PLL circuit.
17. Balanced mixer.
18. Frequency syntezator with 1 mHz step.
19. Frequency doubler.
20. Attenuator based on the bridge circuit.
21. Balanced mixer.
22. Phase modulator circuit.
23. Microtransceiver.
24. Phase modulator based on 7400 and 7474 IC's.
25. VHF regenerative radio.
26. SW regenerative radio.
27. SW regenerative radio.
28. Mixer with wide dynamic range (132dB).
29. SW regenerative radio based on opto-isolator circuit.
30. Simple regenerative radio.
31. RX audio transmitter circuit diagram (radiomicrophone).
32. VHF regenerative radio.
33. MW radio based on op-amps.
34.Balanced mixer .
35. Active magnetic loop antenna.
36. Sensitive AM demodulator.
37. AM/FM regenerative receiver.
38. VHF regenerative radio.
39. FM demodulator based on logic gates (7400).
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