| Zlatko | Date: Monday, 2025-01-20, 6:28 PM | Message # 1 |
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Sergeant
Group: Administrators
Messages: 24
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| This is my project called ONE TRANSISTOR SUPERHET FM RADIO
In fact it is just FM TUNER because you need to use small audio amplifier to listen.
Instead of FM plastic tuning capacitor you may use inductor tuning with fixed capacitor of 33pF
in that case your tuning coil must have 4 turns over 6mm diameter with small ferite core.
For IF transformer i used small ring core from FLUO lamp 15W but you can use something
similar ..it is not very critical , also instead 3.3uH chocke you may use 4.7uH
Transistor must be BFR91A or you may try with C3355 which is also HF transistor.
Good luck in building!
Aurel
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| Zlatko | Date: Monday, 2025-01-20, 7:47 PM | Message # 2 |
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Sergeant
Group: Administrators
Messages: 24
Status: Offline
| Another tiny mode to Zafer circuit:
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