Home | Community | Message Board
You are not signed in.
Sign In New Account
Forum Index Search Posts Trusted Vendors Highlights Galleries FAQ User List Chat Store Random Growery


This site includes paid links. Please support our sponsors.

General Interest > Science and Technology
Threaded Mode Threaded  Previous topic Previous  View all topics Index  Next topic Next 

Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

North Spore Shop: North Spore Mushroom Grow Kits & Cultivation Supplies

Jump to first unread post Pages: 1 | 2 | 3 |  [ show all ]
Transmitting data to a moving vehicle -- Wardriving, basically
    #4156114 -

I want to set up a box on the side of the road that can transmit at least one hour of audio to a device in a moving vehicle driving down the road within the time that the vehicle will be in range if driving the speed limit.

It would be nice if I could build the reciever that goes into the vehicle for less than $30.

It does not have to fit into a dashboard.

Do we have the technology to do this yet?

I'm thinking about taking over a small town, and I need to know.


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4156238 -

Explain this a little further to me. As an electrical engineer I may be able to help.

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4156306 -

Cool idea.

I think the wireless connections you can get for under 30$ are not yet fast enough to transmit that much data in a few seconds(the time the vehicle will be within range).


--------------------
"All substances are poisons; there is none which is not a poison. The right dose differentiates a poison and a remedy." -Paracelsius

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4156940 -

you need an fm broadcast... which requires a license.


--------------------
Use the Fucking Reply To Feature You Lazy Pieces of Shit!

afoaf said:
Jim, if you were in my city, I would let you fuck my wife.

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4157255 -

Wardriving as I know it basically is an unauthorized access to unsecured (or not so unsecured) wireless networks while driving around in an appropriately equipped vehicle.

I think you should look into pirate broadcasting.

http://www.frn.net/

But what do I know :smirk:


--------------------
Every Animal Is Someone 🌱 watchdominion.org

Edited by ivi (05/10/05 12:06 PM)

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Jim]
    #4157342 -

No. That would defeat the whole purpose of what I am trying to do.

I'm looking for an alternative to liscensed broadcasting using unliscensed spectrum, such as that used by wireless networking.

Also I'm considering using LED transmitters.


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: ivi]
    #4157425 -

What I am schemeing is sort of like wardriving, except the computer that is the transmitter is set up to intentionally transfer files to another system, which can then play the audio file over the vehicle's stereo system. There would be no free internet access involved, just a few audio files.

They would be mostly (75%) just people talking, which could be highly compressed.

The cars wouldn't nessisarily have to be moving, but it would be nice if they could be.

A specialized antenna would focus the signal on the road, or possibly it could be placed on a back road where people could stop, or slow down to <10 MPH and download files.


Subversive files.


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: TheCow]
    #4157444 -

I'm trying to circumvent the FCC by transmitting audio by unconventional means i.e. 802.11b, LED transmitters, etc...

LEDs could be used to transmit a signal that could be collected by a small telescope with an IR reciever in the eyepiece. It may only be able to transmit at night though. I'm not sure.


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4157446 -

This what your looking for ?


http://www.kitz.ozware.com/kits/kf0000.html

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: fungusamongus]
    #4157478 -

Not really. Not unless the FCC has really deregulated the FM spectrum in the last day or two and I didn't hear about it.


I'm looking for something low wattage, and high speed.


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4157481 -

You would need quite a powerful LED to transmit anything over more than a few tens of feet. A laser-based system would be better if you want to go a few hundred yards or more.

2.4 GHz cordless telephones have good range and run in the same un-licenced band as 802.11 wireless does. They are already set up to transmit voice...so little modification would be required.


--------------------
Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4157487 -

Yeah, on second thought, go with the 2.4Ghz cordless phones. It's probably the easiest solution to what you are looking for.


--------------------
Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: trendal]
    #4157555 -

Should the audio be digital, or analog?

What would it sound like if I compressed an hour long analog audio signal into a 30 second transmission(120X), and then slowed it down on the reciever side before playback?

Like shit I'm guessing.

I was thinking maybe 10W of LEDs, using an optical telescope to home in on the signal. That scheme would be one way communication only I imagine.


I'll look into the cordless phones. I think you may be right about that being the easiest, and cheapest path.


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4157593 -

I think most cordless phones, especially older ones, are analog. You might be able to find a way to modulate the signal with a modem to transmit digitally (and compressed).

I just asked a friend, and he said that some newer 2.4Ghz phones (maybe even most newer ones) use digital transmission, which would make compression MUCH easier.


--------------------
Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: trendal]
    #4157916 -

Walkie talkies and an audio recorder?

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: California]
    #4158240 -

I was just thinking about those walkie talkies that have like a half mile range. Are those 2.x GHz?


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: trendal]
    #4158270 -

So let's pretend the transmitting/recieving part is going to be a cinch for now. All we need now is recording and playback.

Could we use a VCR to record the signal and play it back 120 times slower without degrading the signal too much?

If the VCR were modified to record 11X faster, and play back 11X slower that would be 112 = 121X faster playback.


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: Baby_Hitler]
    #4158297 -

I think you would have quite a lot of distortion with trying to record/playback a VHS tape at such different speeds.


--------------------
Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: trendal]
    #4158430 -

VCR for audio?
This audio data has to be altered?

Extras: Filter Print Post Top
Re: Transmitting data to a moving vehicle -- Wardriving, basically [Re: trendal]
    #4158561 -

Can you think of something better?

Oregon: If recording to a VCR tape I am assuming the data is time compressed analog.

The broadcast would be recorded at normal speed , and then broadcast 120X faster. The VCR would record 11X faster, and play back 11X slower.

It might would be easier if the recieving VCR (or whatever) recorded at 1X and played back at 1/120 X . There's got to be a way to use the whole tape, and not just the audio track.


--------------------
https://www.gofundme.com/f/support-for-renee-goods-wife-and-son

Extras: Filter Print Post Top
Jump to top Pages: 1 | 2 | 3 |  [ show all ]

North Spore Shop: North Spore Mushroom Grow Kits & Cultivation Supplies

General Interest > Science and Technology
Threaded Mode Threaded  Previous topic Previous  View all topics Index  Next topic Next 

Similar ThreadsPosterViewsRepliesLast post
* Post deleted by Moe Howard
( 1 2 all )		 Macey Howard 4,260 27 10/10/02 01:02 PM
by BuzzDoctor
* Wardriving Oatman2000 902 9 02/22/06 09:48 PM
by drSE
* Wardriving funkymonk 1,141 16 12/03/04 05:53 PM
by runnerup
* Wifi antennas / wardriving and the likes. Cepheus 645 3 02/06/08 08:26 AM
by Cepheus
* Recovering data from a formatted hard drive SoopaX 1,980 11 11/16/04 08:49 PM
by abhi
* moving programs/folders teardrop 1,106 4 11/12/02 11:12 AM
by JovialLeprechaun
* Moving OS onto different drive and dito. Mushie_Man 927 2 05/17/05 06:52 PM
by BigGameHunter

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: trendal, automan, Northerner
4,333 topic views. 0 members, 41 guests and 1 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2026 Mind Media. Some rights reserved.

Generated in 0.047 seconds spending 0.008 seconds on 18 queries.