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Cheap lo-fi wireless audio performance system

Step 5Options

Options
Thems are the basics, gang, but the fun doesn't stop there. Below are some other options to keep in mind that may help to optimize your capacity for audio assault.

1. Rehousing the units: Take all the guts out of the walkie talkie, and rehouse them in something more befitting a rock'n'roll monster such as yourself. Something with cobras or skulls and junk. Or, if you're feeling especially daring, something with cobras AND skulls. Another possibility is to house the transmitter unit within an instrument, like your cheap chinese keyboard or your circuit bent TMX Elmo. Imagine the possibilities for audience participation.

2. Utilize the "send tone" button: Most walkie talkies have a "send tone" button. Snot-nosed kids like to use this particular function to pretend they know morse code when they are playing army or between sessions of grab-ass. We can do better, right gang? Consider turning this into an on-the-fly guitar mounted optical theramin, or simply a loud-ass noisemaker. Not even the $450 dollar professional wireless systems have any bells and whistles like this.

3. Other products which can give similar results: Mr. Microphones, those crummy 80's devices and their inumerable bastard step-children (see Police Academy 2 for details) which transmit audio directly to your FM radio can be used in a similar fashion, with the Mr. Microphone as the transmitter and an FM radio as the receiver. Cordless house phones can be used if you know how to make them run off 9volt, but I'm not going to get into that. Anything that transmits audio from one device to another without wires is fair game. Who knows, maybe you can hack those hands free cellphone earphone/microphone adapters and jam with your buddies across the continent with your free nights and weekends. I'd try it myself, but I've never touched a cell phone, and I ain't starting now.

That's all for now, gang. Keep rocking the most.

Aimless J. Lackluster

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5 comments
Oct 9, 2007. 3:19 PMmung says:
This is cool and all of the money you save will help to pay for the huge fine you will get from the FCC if you get caught. First of all the FCC rules say that you can't transmit music on FRS. Second the rules say you can't modify these radios. If you were going to do this you need to reduce the output power so that it is around .01 watts to be even close to legal. So watch out with this and make sure that you know of the FCC rules before doing it.
Jun 2, 2011. 9:52 AMKaosKIdd says:
Having done this instructable, it's not bad at all. the FRS bands do limit the quality of the sound, but it does work. However, if you happen to have one of the little things from Radio Shack that plugs into your mp3 player and transmits it to your radio, the frequency response would be much better, as the author points out as "fair game". The reason why I suggest this is the band it transmits on, and the power it transmits with is within ALL FCC regulations, thus no one can get into trouble. For a better explanation the rules about the FRS bands please see:
http://wireless.fcc.gov/services/index.htm?job=service_home&id=family
The modifications as listed in the FCC are based on the transmitter and antenna of the transmitter: meaning power, frequency, radiated power and peak envelop power. The actual radio, outside of these restrictions, are open for development and experiment as long as you do not modify these parameters. Lastly, as depicted in the page from the FCC, the FRS bands CAN be used for business related work; which includes the transmission of music. For other bands under the FCC control, it is expressly stated that business can not be transacted, also expressly stats music can not be the purpose of the transmission from the operating station. The FRS bands differ from most if not all of the other bands in their operations.
May 27, 2008. 2:32 PMRishnai says:
I'm working on a cell phone hack right now so that I can take RCA or 1/4 inch signal and transmit it hi-fi via the cell phone's hands-free attachment port. My band has a lot of over-the-cell-phone practice and songwriting sessions, but we're tired of the crappy sound. Bluetooth might work better, but whatever. If it works, I might make an instructable. In the meantime, I guess I'll have to build one of Lackluster's creations.
Oct 31, 2008. 9:50 PMninjabob7 says:
Bad idea. Phone sound is compressed. That means that any frequency outside "normal speaking range" is chopped, meaning the bass guitar will be cut completely, and any notes that make it through will be missing their harmonics. BTW, that's why phones sound tinny - not quality of parts.
Dec 24, 2007. 8:25 AMgtrboy77 says:
You know what, I really don't think the FCC would really give a rat's ass about something this small. Kudos to Lackluster for sharing this interesting and useful hack to all of us. Sometimes if you wanna make an omelette, you got to break a few eggs.

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Author:Aimless J. Lackluster
I'm here to impart and gain wisdom.