CRYSTAL RADIO EXPERIMENT

University of Utah, NSF TEAM

Category:

Education

Tags:

• Rohit
• Pathak
• Jack
• Dam

[nsfteamuofu]

thanks!!

[toy741life]

really lol? we are doing this in grade 12 canada ontario

[nordlander365]

For anyone wanting to build one of these but are "turned off" by "only a couple of stations". The better you build it, the better the results. Even on a basic "oatbox" set, I have gotten up to about 10.

This is REALLY a great hobby and only as expensive as you want to make it. I've stayed up WAY too late WAY too many nights with mine. Dont wanna listen to AM band? GREAT! Try shortwave!!!! Lots of sources for info and a great bunch of folks on many forums with CENTURIES of experience.

[jirachiponyta]

obviously there's not only radio signals running through the air - doesn't everything including the circuit itself resonate? i wonder how many amps/volts you could pull from the circuit with a larger antenna and battery and capacitor in place of the headphone..

[ElPeruanoUFO]

This is what mouses used to communicate with God

[AlienRelics]

Might I suggest some improvements?

Add a resonating capacitor, and connect the antenna by adding about 5 to 10 turns that only share the ground. Then the antenna movement/size won't affect tuning very much and selectivity will be improved.

If you use enameled wire, wind tightly on PVC pipe, then carefully sand along one edge so just the top edges of the copper wire are bared. Then make a slider contact to tune.

Use standard schematic symbols.

[855h0le]

That station? Was that the FM or AM Version of KYFO?

95.5 FM or 1490 AM- I am NOT from Utah but I heard the Frequency being mentioned when u hooked it up and looked online to find this info. Im inquiring about.- thanks! (Many stations will mention their am & fm freq.)

[djchaz75]

thx, great vid

[themeddleman]

I thought that crystal radios generally received AM stations. Are you not receiving FM stations? Do you prefer one modulation over the other?

[sarabella2000]

.....Great vidio....