10-200hz TX

[Se7en]

is it possible to make a small 10-200Hz transmitter? i cant find any transistors that can produce modulation at this frequency.

this project would be used for idiots with loud subwoofers at stoplights.:bdh:

 

[Captain Kilowatt]

Yeah, they are called audio amps. At those frequencies the only difference is what the load is, a speaker or a really, really, really ,really, loooooooooonnng wire antenna. :w00t:

is it possible to make a small 10-200Hz transmitter? i cant find any transistors that can produce modulation at this frequency.

this project would be used for idiots with loud subwoofers at stoplights.:bdh:

 

[Se7en]

Yeah, they are called audio amps. At those frequencies the only difference is what the load is, a speaker or a really, really, really ,really, loooooooooonnng wire antenna. :w00t:

The plan is to build a circuit that osculates between those freqs at different audio tones that only there subwoofer will respond to and not there CDplayer or radio. as far as the antenna goes.. i can build a small thin wire loop antenna around the roof of the vehicle between the sheet metal and roof liner.

 

[Captain Kilowatt]

The plan is to build a circuit that osculates between those freqs at different audio tones that only there subwoofer will respond to and not there CDplayer or radio. as far as the antenna goes.. i can build a small thin wire loop antenna around the roof of the vehicle between the sheet metal and roof liner.

So you want to operate an antenna inside a Faraday shield hey? Ain't gonna work very good at all.At those frequencies even a windshield opening is a very small hole in a Faraday cage. Besides that image trying to propagate enough power to override the signal that is hardwired from the amp to the speaker. :blink:

 

[RatsoW8]

Morse, are you talking about building the home version of that "less than lethal" sound weapon (crowd control device) the military and police departments are experimenting with?

LOL

 

[Se7en]

Morse, are you talking about building the home version of that "less than lethal" sound weapon (crowd control device) the military and police departments are experimenting with?

LOL

oh didn't think of that :laugh:
i could easily buy one for $7grand
no just so sick n tired of broken QSO's from idiots with sub woofer booming at stop lights.

 

[Beetle]

The plan is to build a circuit that osculates between those freqs at different audio tones that only there subwoofer will respond to and not there CDplayer or radio. as far as the antenna goes.. i can build a small thin wire loop antenna around the roof of the vehicle between the sheet metal and roof liner.

Remember, use the KISS system....

 

[RatsoW8]

oh didn't think of that :laugh:
i could easily buy one for $7grand
no just so sick n tired of broken QSO's from idiots with sub woofer booming at stop lights.

I hate that nonsense too. Don't hear much of it snce I don't work on the South Side of Chi-Town anymore. My little town in MI is pretty much homeboy boom car free..just the way I like it.

Hope your project works out!!!

 

[towerdog]

dude you just gave me an idea. think, circuits out of noise canceling headphones hooked up to 12" bass speakers and 1000 watt amplifier.............pull up beside boom boom, cut it on and boom boom be gone! in theory anyway.