555 am trasmitter

237

02:54:41

Range:25m 
Current :5-9v 
Pin 3:antennae
By nikisalli 

published 10 years ago

hurz

10 years ago

555 at 1MHz ok, plus a proper antenna and a tone generator e.g. 440Hz instead of 60Hz hum might give you 10m range as a doorbell ;) if you have a receiver with squelch level. 10m because squelch must be quite high set over night to not wakeup by arabic radio stations over night :-)

nikisalli

10 years ago

Thanks now i'm going to improve it

nikisalli

10 years ago

I've an old transistor radio with am mode can i use it like receiver?

hurz

10 years ago

Sure

Jonathan0612

10 years ago

hurz

10 years ago

First i recommend an improvement of simulation by set the right simspeed, cuz 555 actually oscillates at ~1.1MHz and not at 1.8kHz. To do so you can place a dummy source at 500kHz unconnected. Most likely you might also use as tone generator a simple square wave instead of sine. Set it to e.g. 10us period with zero rise and fall time, which is higher then 440Hz, but let you see some action in simulation. Keep it up!

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