Man in India creates software that sends computer data over radio

[Luis337]

Pretty cool...you can send data over the radio and then plug your radio into your computer and have it converted to audio.

https://www.youtube.com/watch?feature=player_embedded&v=mR73lK7Z7jI

[undgrd]

https://www.youtube.com/watch?feature=player_embedded&v=mR73lK7Z7jI

[midnight rambler]

The future of the internet?

http://www.hangthebankers.com/the-future-of-the-internet/

[DMac]

I posted the instructions on how to do this via HAM radio at either GIM or here or both.

Here is an introduction to packet transmission over radio:

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

http://www.tapr.org/pr_intro.html

[Glass]

ah, so a modulator demodulator type of thing? It's a novel idea. You could call it a "modem" perhaps. Just a little play on words there but I think it works.

Actualy it's more about the algorithm I guess. I remember maybe 10 years ago. Coud be longer now. A young aussie kide developed an algorithm to enable you to store 1Gb of data on a floppy disk. A floppy disk of the time could hold 1.44 megabytes of data, not the 1000 megabytes the boy claimed he could store.

There was a lot of hoopla. Accusations of being a fraud. that kind of thing. Anyway the boy and his dad met with some interested parties. They sold the tech for some amount of money which I think was a few multiples of $1 million. I think way below what it was worth. Maybe they were smart and did a percent deal. It was going to change the world. What ever the technique it remains privately owned. We do see the results in the hard drive capacities we see today but the general public has no access to this for themselves. Does that matter?

The amatuer radio side of it a specific interest called packet radio. You use an algorithm to encode the data, then it is tramsmitted via radio and decoded. Software and a computer with a mic jacked into a radio headphone jack or even a mic upto a speaker can suffice. There are analogue and digital variations of this. It is slow but it works. You can use it like texting. They used to run BBS (http://en.wikipedia.org/wiki/Bulletin_board_system) systems on them. Still do.

Your internet modem or modem router uses this technique as well. Except it's over wires and note wireless. The idea is the same from old dial up to current broadband. It's modulating/demodulating. Analogue and digital.

What I find interesting is the element of necessity is the mother. They have a unique situation there and this leads to thinking and ideas that we see here. This is what leads to invention, re invention or better utilisation. If they linked this up to something like a raspberry pi at the other end then they will be making progress. It's low power which is ideal for the remote places. A transistor radio and a raspberry pi.

DMac. Maybe they are a GSUS'er.

[palani]

My shop project in high school in 1966 was to build an FSK demodulator to drive a WWII model 19 teletype. I used to monitor Reuters news service with it from a shortwave eceiver.

[vacuum]

It's definitely feasible, the only reason it isn't a reality is that traditional methods are so cheap, fast, and ubiquitous. Once a squeeze happens though, p2p wireless will be born.

For example, you can create a 10 mile, high throughput wireless link (line of sight) for less than $200. Check out this post I made a while back: http://gold-silver.us/forum/showthread.php?48448-The-days-of-all-you-can-surf-broadband-are-vanishing&p=409534&viewfull=1#post409534

[joboo]

Bandwidth is the deciding factor. Slow but still useful.

What he needs to do is bundle in a USB FM transmitter with his software.

It's not hard to build a simple FM transmitter with about a dozen components using a breadboard. Using potentiometers makes the entire process much easier.

Pick a dead spot on the FM band then tune your pots to broadcast on that frequency. Use a walkman playing a specific track at the input to know when you're dialed in. Typical low wattage components produce about 150 feet of range. From there, add some juice to the antenna.

[Glass]

Bandwidth is the deciding factor. Slow but still useful.

What he needs to do is bundle in a USB FM transmitter with his software.

It's not hard to build a simple FM transmitter with about a dozen components using a breadboard. Using potentiometers makes the entire process much easier.

Pick a dead spot on the FM band then tune your pots to broadcast on that frequency. Use a walkman playing a specific track at the input to know when you're dialed in. Typical low wattage components produce about 150 feet of range. From there, add some juice to the antenna.

With $100 bucks you can go larger and get a 1w FM transmitter. I had one that came as a kit. 3 boards in all and an antenna. Has about 5km range. It's a bit leap up for poverty truck india though. Actually I was at a mates on the weekend and he was running one. Playing Alex Jones from an iPad and transmitting it on local FM band.

I'm waiting on a packet radio kit. Coming from NY so it was recently delayed a day or two.