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"FM"

Plugin 900 MHz FM Stereo Reciever

Jake | September 2nd, 2008 | 1 Comment

So I have these pair of 900 MHz wireless headphones and I’m thinking, when they’re plugged in I’m broadcasting my music on a FM stereo signal throughout the house. What I want to do is build a project box that can receive and tune the FM signal in the 900 MHz range, plugs into a wall socket and has a 3.5mm stereo out, or a built in amp with speakers - enabling listening in multiple rooms wirelessly without the need for the headphones.

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Portable FM transmitter

Andrew Stang Green | May 28th, 2008 | 3 Comments

About a week or so ago i told all of you i wanted to build a portable FM transmitter, well, my first trial,….somewhat worked, but i found my mistake, i was trying to make it too simple so i could post it up on here to show all of you how to build one your self, so i built a second one, this one uses 13 resistors, and 21 capacitors, 2 transistors, and 2 variable capacitors, and of coarse an inductance coil, the coil has for turns of a 5mm inner diameter, air cored, any way this new “packed” version fits in the palm of my hand and gets around 600 meter range, of coarse the use of this is illegal where i live, so i can not use it with out a license from the FCC, it really was a fun project though, and so just to make things fun for all of you i decided to take another crack at it making another very simple FM transmitter, this one is big for a reason, so you can see each individual part, it is still portable, and is also powered by a 9V battery, but its a stone age design, lol, the original schematics i had i could not use for i did not make them, so i decided to make my own, and came up with these three beauts, if this little explanation isn’t good enough for you i will post a |how i do stuff” on this later.
comments or suggestions?

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Homemade portable FM transmitter

Andrew Stang Green | May 20th, 2008 | 7 Comments

Have you ever pulled up to a stop light at an intersection only to be blown away by an obnoxious guy in a “dew-rag” blasting his radio and showing off his subs in the car adjacent to you? well i sure have, lol so what im planning on doing (hopefully in the next week or so) is building a simple FM Transmitter that will automatically tune to his frequency(and i cant get that part to work i will just listen for his station) and submit to him a bit of my own input, hehehe, i don’t know maybe something like Cher’s “Keep on movin’ on” lol or possibly scaring the poor “gangsta’” out of his wits by playing a fake emergency broadcast that aliens are attacking the city, use your imagination, lol i will hope to have this project done by mid next week. and i will post when it is finished.

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