Zinc Negative Resistance 80 Meter CW Transmitter.
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Uploader Comments (nylesteiner)
All Comments (24)
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very nice.. thanks for the video. like your website too.. was looking at doing your 'easy ten' transmitter do you know if it would work in the uk?
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Stone Knives and Bear Skins! Excellent creation.
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IS there any way to make the zinc strip into the crystal ocillator at all? that would be impressive! just 2 pieces of burned metal and have a radio transmitter lol. great work, really like the mini oscilloscopes
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I would love to make my copy of this project work. All I'm getting right now are clicks / interference when I use the key, no tone per se. I'm guessing either my zinc strip is no good, or my crystal is blown. (I bought it at a hamfest, but...) How could I check if my crystal is OK? Any suggestions?
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can I use 10K Slide variable resistor instead of 25K pot and call phone charger instead of batteries???
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Really amazing, what is the RF power output of this oscillator? Must be at least a hundred miliwatts or so to travel 5 miles.
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and with a carbon microphone, we have AM?
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galvanized sheet metal :)
It also works with iron pyrite
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I want to try this myself
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seems like pitch is not stabilized. A regulating capacitor might help to give you a solid 'long' instead of the dropping swoop that's happening.
reformedman 3 years ago
Considering the very crude, basic and unusual processes used to build this transmitter, the pitch stability is extremely good.
nylesteiner 3 years ago
I bet with addition of microphone and 1 amplifying transistor for it, you can transmit voice and stuff.
clerlic 3 years ago
You are right. Check out the video "Radio Transmitter Made Out Of Junk" This guy made an identical circuit broadcast music to a receiver.
nylesteiner 3 years ago