Simple Crystal Radio
This is a simple crystal radio that I built to help me understand more about Dr. Stiffler’s SEC Exciter. This radio is powered only by the airborne signal from a strong radio station. It…
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Simple AM radio using MK484 IC
This is a simple AM radio receiver that use an integrated circuit chip called the MK484 as the main component. This simple radio will run on one AA battery using an earphone. I show…
Crystal oscillator radio transmitter
This is a simple AM radio transmitter that uses a 1MHz crystal oscillator module and just a few other parts. You can find info on this at SciToys.com. My first attempt to build this…
AM Radio with wireless Loop Antenna
This shows a wireless non- powered “Loop Antenna” that enhances the reception of my homemade AM radio. This one is my own design but other designs may be found here on Youtube. It is…
Pancake coil JT– radio transmitter.ASF
This video shows how the “Pancake coil JT” can be used as a short distance AM radio transmitter. I also show how I used a “radio direction finder” method to help navigate to Hawaii…
Amplified Crystal Radio with and without ground wire
This is further study into the AM crystal radio using a homemade amplfier to boost the output signal and drive a speaker. The device is shown first running without an earth ground and then…
Cool Joule Radio Transmitter–hooked up to a laptop computer
This is a super simple wireless device that can broadcast the headphone output signal from a laptop computer to a nearby AM radio. I call it the ‘Cool Joule Radio Transmitter’. The circuit is…
Slayer Exciter –Indoor solar powered radio transmitter.ASF
This is the Slayer Exciter being run on indoor solar light only—no batteries. A small solar panel is capturing indirect solar energy through a window. The oscillator is shown not only illuminating LEDs but…
Homemade AM Radio in a wooden box.
This is my homemade AM radio installed in a wooden box. It is a simple “retro” radio design.
Wave Trap filter for crystal radio
This shows a crystal radio add on device called a “Wave Trap”. It helps block out an overpowering radio station so that you can hear weaker stations.