Amplifier Questions

[Trace]

My friend was asking what I knew about amps for CBs and such.

The question: Will a car audio amp, such as something for a subwoofer, etc. work to amplify CB, WiFi, or any of those electromagnetic waves? Or is a different amp necessary?

Thanks,
Trace

[mtekk]

Short answer: Probably not.

Slightly longer answer: Most audio amplifiers only have a gain for frequencies below 20 to 40KHz (and for subs it's probably something like 100-200Hz for the cutoff frequency), everything about that ends up getting attenuated (low pass filter style, or even worse you end up with a 180 phase shift causing oscillation). CB operates at something higher than 100KHz, and WiFi is at 2.4GHz, neither of these signals will be amplified.

[Mark_Hardware]

http://www.xforceamps.com/shop/?cart=439639&cat=27

I don't know about that site in particular, but I do know about the "Midnight Special" brand. Tell him to put some heavier finals, a connex board, and a bad mamba jamba external amp like one of those and he'll be talking to people on the other coast man

[Trace]

Thanks guys, ill show him this thread tomorrow

[Luke122]

http://www.xforceamps.com/shop/?cart=439639&cat=27

I don't know about that site in particular, but I do know about the "Midnight Special" brand. Tell him to put some heavier finals, a connex board, and a bad mamba jamba external amp like one of those and he'll be talking to people on the other coast man

LOL... and the FCC. ;)

[Mark_Hardware]

yeah well really you are supposed to have a license even to operate a regular CB. Just don't speak any language other than English and you'll be fine

[Luke122]

yeah well really you are supposed to have a license even to operate a regular CB. Just don't speak any language other than English and you'll be fine

Haha.. sad but true!

[Trace]

I thought CB was license free?

[Mark_Hardware]

Yeah... so idk if they changed it or if I was misinformed, but you do not need a license to operate a standard CB radio. (I do believe you need a license for a HAM radio tho) I'm pretty sure they still want you speaking english tho.
http://wireless.fcc.gov/services/index.htm?job=service_home&id=cb

[Kayin]

So that's not the place to brush up on my arabic?

[Luke122]

So that's not the place to brush up on my arabic?

Should be fine! Let us know when the FBI kick the door down. hehe

[Twigsoffury]

You'll need a linear Amplifier, A powerful one. most important part of your set up should be a antenna, If your short on space, (everyone can't exact have a 50 foot Radial antenna hanging out of there window) Research "Fractal Antennas"
Basicly apply the M-set from fractal geometry and make yourself a 12" 150 foot antenna. you'll be able to talk to Russians with a M( Mandelbrot) set antenna..No BS.

http://en.wikipedia.org/wiki/Fractal_antenna
http://en.wikipedia.org/wiki/Linear_amplifier

Fractal antennas can also accept a wide range of frequencies simultaneously, while traditional antennas usually can't.

You need a licence to Operate a Class AB1,AB2 or C, mostly just because with AB2's and C's, if your not careful you can ride yourself along frequencies of television channels, radio stations and government crap, So they don't want you out there with your 10,000W tower making everyone in a 200 mile radius get static and interference. think its a FCC regulation, but don't hold me to that.

That being said i've got a lot of radios your supposed to have a licence for, but i've never had Obama's SS troopers show up at my door (yet)

[Trace]

Lol Thanks for the help! My friend will like hearing all this!

[Twigsoffury]

Lol Thanks for the help! My friend will like hearing all this!

Watch this show and you'll understand more about fractals and fractal based antennas.

afterwards you should be able to build and set up your own M set antennas.

http://www.pbs.org/wgbh/nova/fractals/

Lol i've made one for my FM antenna, Every radio station comes in CRYSTAL clear, My next project is making one for my car so i can pick up HD radio

they are easy to make, you've just got to keep taking a line, deviding it in half, and adding another, repeating the processes until its a ultra complex looking piece of crap LOL.

(Note this isn't my antenna)
http://i48.tinypic.com/2ptnzhk.jpg
I'd really recommend exploring fractal antennas...the difference is night and day.

[Liquid_Scope_99]

I think what it is is to run any kind of "amplified " signal or amplifier on your cb you have to be licensed . If its not turned up or amplified its ok i believe .
Then i would just get a ham license and get a ham radio . But that's just my imho

[Twigsoffury]

I think what it is is to run any kind of "amplified " signal or amplifier on your cb you have to be licensed . If its not turned up or amplified its ok i believe .
Then i would just get a ham license and get a ham radio . But that's just my imho

it's only illegal if the cops see it :O

[Mark_Hardware]

Lol i've made one for my FM antenna, Every radio station comes in CRYSTAL clear, My next project is making one for my car so i can pick up HD radio

I'd really recommend exploring fractal antennas...the difference is night and day.

Well, you have fun enjoying your HD radio, I'll have fun laughing at at your car with an antenna like that :D;)

[Twigsoffury]

Well, you have fun enjoying your HD radio, I'll have fun laughing at at your car with an antenna like that :D;)


lol.


It just so happens that i bet you have a 1"x1"x1:64" 900 foot fractal antenna in your pocket.

Fractal antennas since they are based on the M-set (Mandelbrot) can be made incredibly dense and compact, but yield a overall long length. basicly a straight antenna thats be halved over and over again then reconnected.

the really nice thing about F antennas? They can accept multiple frequencies at once. without a F antenna you'd need separate antennas for each transmitter you wanted, So one for your phone, one for blu tooth, one for wireless, one for GPS and so on, And they would each need to be 10 to 12 feet long sticking off your tiny phone to accomplish the same reception.

Remember the early days of cell phones when you could barely get a signal to talk? but you still had a huge antenna sticking off the top?

hahha that was before Mr. Mandelbrot blew up the world with his fractal geometry

http://math.bu.edu/DYSYS/FRACGEOM/FRACGEOM.html

http://en.wikipedia.org/wiki/Fractal

http://www.mandelbrotset.net/

http://www.hbci.com/~wenonah/cfa/fractal.htm

watch this if you are confused. it'll explain just about everything about it. how it works whats it about, i highly recommend it.

http://www.pbs.org/wgbh/nova/fractals/

You just need to spend alot of time to shrink the design, I mean imagine taking a 20 foot piece of PVC pipe, chopping it in half, sticking it back together at a acute angle, then chopping that in half and doing it again..but like 2,300-3,500 times lol. plus certain sizes have better "harmonics" for certain frequencies. you can do the same thing on a smaller scale, but you'll need to it on the next set. so it'll be like 300x more complex to pick up the same frequency you need.so most d00ds just leave it on a higher set (huge). since well most people don't have access to a piece of elaborate machinery to make something like that.

But man they sure are sweet. wave of the future type ****.

[Mark_Hardware]

Is that a fractal antenna in your pocket or are you just happy to see me?

sorry, sorry, could help myself :p

[Airbozo]

I think what it is is to run any kind of "amplified " signal or amplifier on your cb you have to be licensed . If its not turned up or amplified its ok i believe .
Then i would just get a ham license and get a ham radio . But that's just my imho

If I remember right, and they have not changed the rules, any radio over a certain power rating requires a license to operate. The license is very easy to get and cheap. I am not sure if it has been rolled in with the HAM license or not.

EDIT: Assuming this site is correct, a "normal" CB radio does not need a license to operate.
http://home.att.net/~wizardoz/cbmw/fccrules.html

This specifically relates to this thread:

Although no license is required to operate a CB Radio, FCC Laws Part 95, Subpart D, which contains the FCC's rules for CB Radio operation, are still in effect. These rules cover CB Radio equipment, the ban on linear amplifiers, and the types of communications permitted on the air.


it's only illegal if the cops see it :O

Here's the bad part: It's NOT the cops you need to worry about. Uncle Charlie can make your life hell.

[Twigsoffury]

If I remember right, and they have not changed the rules, any radio over a certain power rating requires a license to operate. The license is very easy to get and cheap. I am not sure if it has been rolled in with the HAM license or not.

EDIT: Assuming this site is correct, a "normal" CB radio does not need a license to operate.
http://home.att.net/~wizardoz/cbmw/fccrules.html

This specifically relates to this thread:




Here's the bad part: It's NOT the cops you need to worry about. Uncle Charlie can make your life hell.


were all going to be dead in 2012 anyways.

if its not a giant flying roid from space, it'll be cyberdyne (google) and teh terminators (honda Asimo).