Spark-gap transmitter and coherer with Beaglebone!
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- čas přidán 19. 03. 2016
- I built a coherer-based receiver with a simple decoherer mechanism, and connected it to a Beaglebone to decode the received signals. For details see - ashishrd.blogspot.com/2016/03/...
Watch out for the FCC!
Great work, very interesting !
Nice Video, nice project.
It is a strange idea, using such a vintage radio transmitter and receiver setup with a modern computer for decoding the signals.
I love how it's all car parts lmao
Looks very nice, I know what I am building next
Well made!
I am constantly looking for transformers like that one, but in Netherlands you can only get thos small low wattage ignition coils, because car parts are destroyed instead of reused.
Well done!
0:35 "Back EMF from the ignition coil" & the relay's coil?
I mean you don't want arcing at the relay contacts, so the capacitor absorbs the relay's countervoltage too?
Awesome!
I want to make one of those maybe!
Very nice idea. Can I use arduino instead of beagle bone
Would be great if you made a tuned circuit and tested it's range. Wonder how far it would reach on day 80m
Great idea
Great
Wow!!
hi, you have the source code?
What capacitor you are using to reduce the arc?
It's an automotive ignition coil capacitor.
Can you increase the range by connecting it to a large antenna?
Yes. But it's illegal in U.S.
@@AlexBurtonMusic All over the world since 1928.
@@KB4QAA I live in Turkey. I contacted the ministries and was told that this is not illegal.
@@AlexBurtonMusic Well, that is not correct. Spark transmitters have been banned since 1928 by ITU regulations. Ships were allowed to use the as emergency transmitters until the 1960's. Now, if you are referring to this video, as a very low power demonstration, that is OK unless it causes interference. The original post asked about attaching a large antenna. That is not permitted. Cheers.
@@AlexBurtonMusic From ITU Radio Regulations Page 28: Definition: "3.15 The use of damped wave emissions is forbidden in all stations."
Воще класс.Привет из России
What is the range of transmission
Without an antenna it is about 20-30 ft. Of course back in the day when spark transmitters were legal, you could add an antenna and send signals quite far.
Well that's completely illegal
hey hey hey, here I see a transistor!
You are a cheater !!!
I wish Marconi had one! ;)
super! vy 73 df8zr