Radio Frequency Circuits
1. AM Receiver
2. MW Active Antenna by David Sayles
3. Q- Multiplying Loop Antenna ( David Sayles )
4. 4 Band Double Tuned Preselector ( David Sayles )
5. ZN414 Portable AM Receiver
6. SW Receiver using the ZN414
7. 2 Transistor FM Transmitter
8. FM Transmitter by David Sayles
9. FSM Field Strength Meter
10. Simple Field Strength Meter
11. 4 Transistor Transmitter by Paul K Sherby
12. FM Transmitter with Opamp by Kamram Ahmed
13. UHF TV Preamplifier
14. ATL3 Loop Antenna by Graham Maynard
15. Surveillance Transmitter Detector
16. AM Transmitter
17. 6 x 6 Antenna Loop by Graham Maynard
18. 2 Transistor Transmitter by Rob
19. MPF102 FM Receiver by Patrick Cambre
20. SW RF Pre-Amplifier
21. Band 2 Preamplifier
22. Bipolar Regenerative receiver by Ramon Vargas
23. Crystal Controlled Oscillator by Ramon Vargas
24. Short Wave Regenerative Receiver by Ramon Vargas
25. FM transmitter by David Celestin
26. Automatic Repeater by Miroslav Adzic
27. MK484 AM Receiver by Chad Castagana
28. TV Transmitter by David Kwaku Celestin
29. The Modern Armstrong Regenerative Receiver (in PDF Format) by Ramon Vargas
30. 30 Watt VHF Amplifier by David Celestin
31. Antenna Tuning Unit
32. Sensitive DX TRF Receiver external link to Husnu Kokturk's web site
33. 49MHz Walkie Talkie Circuit External Link
Content sourced from Zen Schematics