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My antenna is a quarter wavelength at 80cm long. It hanged vertically so it was parallel to the whip antenna on my home stereo and on my car. Colin's antenna is double the length which is not correct for a single piece of wire.
I can't be bothered to copy and paste from Wikipedia where it says a whip antenna is 1/4 wavelength which is resonant (75cm for the FM broadcast band) and has 3dB more gain than a half wave dipole.Isn't it AMAZING. I get a much better range with 175cm than 80cm. That's because the antenna length is ALL WRONG!!!!!
Your 2SC1959 has almost the same spec's as a 2N3904 transistor except the pins are different.finally, i got a miraculous solution for the fm transmitter! I did't add a power amplifier in last stage (but removed it.) and removed the 2n3904 from oscillator stage and just added a transistor stamped "c1959"on it and got more than 1Km range even only with a 10 cm antenna!!!
Your 2SC1959 has almost the same spec's as a 2N3904 transistor except the pins are different.
Maybe you had the pins backwards before.
Please post the new schematic.
Don't you understand what I said about AFC in your radio?@Guru, i replaced the variable cap with a fixed 15 pf cap, and still i can touch its antenna without any problems! The frequency changes only when i touch the coil
But in this circuit it has only a 3.7V supply and it has a 100 ohm emitter resistor.it is a high power transistor power almost 500mw at Ic of 500mA