Is it possible to create a 555 timer AM transmitter with a serial connection to a pc?

I am only wondering and it would be awsome instead i would have to buy a HAM radio, (BTW i have my amature radio licence)

The reason for the serial connection would be so i can play some of my music though it, or maybe even if USB or Fire-wire could be posible

You can buy USB audio cards on eBay for a couple of bucks & connect the audio out from this to your transmitter. Here's a quick schematic I threw together to show how to really amplitude modulate a 555. Lots of calculators online to figure out values so I didn't bother.
555 AM TX.png
I am working on a similar project with a friend. Instead of an AM transmitter I am using an FM transmitter. However, the major snag to this (unless you are plugging it straight into the audio jack) is writing a driver for the computer to understand how to transmit the signal through the USB or Firewire port. Unless you are very good at programming you will have a major problem here. You're best bet is to use the audio jack and plug it straight into the transmitter. Best of luck and post how well it works!
lemonie6 years ago

If you have a licence then you need a transmitter, and you should know what they are.
I don't really understand what you want, unless it's "how to build a transmitter from scratch"?

L


Not practically.