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  1. To make a DIY AM radio transmitter, follow these steps:
    1. Gather the necessary parts, including a one megahertz crystal oscillator.
    2. Build the transmitter, with the oscillator as the heart of the circuit.
    3. Assemble the components, including a transformer with two metal tabs.
    4. Test the transmitter to see if it works1.
    5. Alternatively, you can build an AM transmitter for use with antique radios by calculating the capacitance for tuned circuits and procuring the necessary parts2.
    Learn more:

    Build a Very Simple AM Transmitter.

    • Step 1: Stuff You Need Our transmitter will need these parts: A one megahertz crystal oscillator ...
    • Step 2: Building the Transmitter The oscillator is the heart of the transmitter. ...
    www.instructables.com/Build-a-very-simple-AM-Tra…

    Build an AM Transmitter for Use with Antique Radios

    • The Transmitter The oscillator of the transmitter uses one gate of a digital hex inverter as the amplifier. ...
    www.nutsvolts.com/magazine/article/build-an-am-tr…
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  5. DIY AM Transmitter-Circuit Diagram, Components, …

    Nov 27, 2018 · A simple am transmitter circuit with diagram and schematic. This am radio transmitter can transmit audio/sound to your backyard. Follows FCC regulations and still produces enough amplitude modulation.

  6. Simple AM Radio Transmitter & Receiver : 4 Steps

    Instead of trying to use an nRF24 or RF modules, we will go back to the old days in which they used AM radios. I will show you how such amplitude modulation works and along the way show you how to build a super simple AM

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  8. Simple Low Power AM Radio Transmitter - Instructables

    How to build this low power AM Transmitter, solely for the educational purpose to test your crystal radios. The whole transmitter can be fit into this small box. The screws are for connection to Antenna (or telescopic antenna) and ground. …

  9. Evan's AM Tube Transmitter Circuits! - X Minus One

    On this page you will find multiple AM tube transmitters along with their schematic diagrams. I've progressively detailed my efforts to build a high quality tube-type AM transmitter, starting with a one tube transmitter.

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  11. AM Radio Transmitter Using 555 Chip - electronics …

    This project shows how to build a simple AM radio transmitter based on 555 timer IC. The circuit parts are: the 555 timer IC, a NPN transistor three caps, three resistors and a potentiometer.