Shortwave AM radio transmitter with NE555 !
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Put in some soundprocessing, all above signals above 4.5 Kc you have to filter, or make a 5 kc audifilter between you amplifier an TX otherwise you signal is much wide on the band and splatters
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The output from 555 is a pseudo PWM/FM modulation, but it can be somwhat heard on a AM radio aswell. It generates a lot of harmonic frequencies. If you used my scheme, tune your radio somewhere near 1-3MHz AM, with a 1 meter long wire as the transmit antenna, the signal can be heard up to 20m away from it, but it's good only for speech broadcast (the music quality is awful).
If you have a FM receiver that operates in the 1-5MHz frequency range you can try that, how it sounds ;-)
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does this radio have FM 88-108 Mhz band ?
georgestelea 5 months ago
@georgestelea nope.avi
TheReal1inflater 5 months ago
The transmiter is FM or AM?
Can I replace the "audio connector" by a microphone?
rockplayer2001 2 years ago
Also for the microphone, you could. But if the sound would be too quiet, try to use a capacitor (=amplified) or carbon microphone instead of the electret one... Good luck.
TheReal1inflater 2 years ago
my friend can you send me the diagram for to make an radio transmitter using NE555?
my e-mail: rockplayer2001 @ hotmail. com
greetings from México. 5*
rockplayer2001 2 years ago
Sure, check your e-mail.
TheReal1inflater 2 years ago