building a ufo receiver transmitter

Why is it I can't shake this image?




Anyway, good luck with it. Be sure to say Hi for me.

In 1974 two very famous and respected scientists (Carl Sagan and Frank Drake) used the the Arecibo telescope to blast the Hercules star cluster with a message in the hopes that in 2500 years it might be received by another race.

It saddens me that while everyone here has the time and energy to make fun of the OP and provide reasons why their idea won't work, they don't have the energy to provide possible solutions or get off of their buts to try something themselves (beside posting another unfounded YouTube video).

OP, your methodology is both scientific and thought out. I wish you luck. I think your concept is sound but the technology needs some refinement.

Like I said before, using a near infrared laser will negate issues with the FAA. Powerful NIR LEDs can be harvested for free from old DVD burners (wear eye protection, the beam is invisible and may be harmful at close range). These LEDs are easy to drive (power and modulate), and can be ganged together to increase overall power. De-focusing the beam into a narrow cone (rather than producing a perfectly collimated beam) will both ensure that the laser is easy to aim and that only moderate power reaches the craft. High power at the receiving end should not be needed. Even consumer level, police radar jammers can detect incident NIR light from the NIR lasers used by speed traps (yes, the police point NIR lasers at us every day).

As mentioned before the receiver circuit you are suggesting is inadequate. Try to find one that uses a photodiode instead of a solar cell. Both Digi-key and Newark in One sell many different photodiodes for only a couple dollars. Also, you will want to notch filter 60hz and 120hz or high pass above 120hz so that city lights do not swamp your receiver with a loud hum. look online for notch and high bandpass filter circuits that use op-amps. They work well, are inexpensive and practical to build.

A cheap consumer grade newton or refracting telescope on the receiving end will increase the sensitivity of your receiver many fold.

I design electronic systems. If you have any technical questions I'm happy to help where I can.

Just a quick comment about your target----star systems. Be sure to get the fastest laser you can afford. Some of these star systems are possibly thousands of miles from here. Once you calculate( for your laser signal) atmospheric drag and cloud cover along with any interference from spatial dust or cosmic rays from the sun, then even allowing for your signal to be captured, translated and replied to could take several weeks. With the very fastest lasers you may be able to get the round-trip time down to a week or so...if you're lucky.

If you DO succeed and get a reply don;t waste your time with the Google translator. I have tried it on everything from Sumerian cylinder seals to ebonics and it fails horribly--and that is with EARTH languages! DO try to keep your outgoing message simple. I know aliens are probably very smart, but even forgetting to put the "o" on "hello" might be regarded as an ambiguous transmission at best.

Anyway...Good Luck. And wear goggles.

In order to communicate with something you must first know what it is. If it us unidentified and flying it might just be a baseball or something. Baseballs do not understand language or have that capacity to think.

reply to post by Malkuth

Be sure to get the fastest laser you can afford.

Fastest? Light speed only has one speed you know? Its kind of a fundamental law of physics

reply to post by eroutt


Be careful what you ask for.....

atleast wait until you can be sure you attract the attention of the right ones..

Is this device to try and record or prove ET transmissions?

1. Et doesnt communicate electronically or with any device. They do communicate if they wish to. You will pick it up.

2. If you were going to record or prove ET contact, would they transmit? Or would they transmit and remove the recording? What is time to us? What is No Time? How do they give us missing time?

Other than that it looks interesting.

reply to post by HumanoidX

getting back to your circuit. you need to read up to see the requirements for laser-diodes, esp. if you want to go to other colours than red. Laser diodes have very stringent power requirements, otherwise you will just end up with a burnt-out laser.

The blue, green and violet ones are especially prone to wrong power, static, etc, etc.

I would recommend reading up on lasers. Here is a good link to help you along the way, and a lot of circuits.

repairfaq.org...

A rough calculation of your circuit shows it is about 5mW. Not really a lot, lol...... same as you get in those very cheap laser pointers

Originally posted by PhoenixOD
reply to post by Malkuth

 

Be sure to get the fastest laser you can afford.

Fastest? Light speed only has one speed you know? Its kind of a fundamental law of physics

edit on 8-11-2011 by PhoenixOD because: (no reason given)

Don't confuse him with science....since he also said:"Some of these star systems are possibly thousands of miles from here.
There I always thought the closest star system was Proxima Centauri at 4.24 light years... I guess there is still so much I have to learn...

Originally posted by eroutt
this is what i am going to build and test as soon as i get clear sky's! its is used for wireless audio over light!

circuit

finished build

i am going to use this device to make contact with the occupants of the alien craft! if that is what thy are? also if thy use light for communication! i can communicate using light? i understand if this is confusing to most people. it is my own personal quest! update links should work now!

update: this is just an idea! i do not want the FAA on my butt!
update: i am not going to point it at craft! only star systems, planets.etc unless it does not interfere with FAA rules!

edit on 7-11-2011 by eroutt because: (no reason given)

How exactly are you going to modulate your signal? If the laser is your carrier signal, how do you plan to embed your Hello World message? For the message itself, you don't seriously believe you can just record "Hi there" and they will even recognize it as a message? The only message they will be able to recognize is if it's sent in the truly universal language of Mathematics...
Save yourself the $25 for the parts and go and buy yourself some ice cream and a walky talky...

Originally posted by dainoyfb
In 1974 two very famous and respected scientists (Carl Sagan and Frank Drake) used the the Arecibo telescope to blast the Hercules star cluster with a message in the hopes that in 2500 years it might be received by another race.

It saddens me that while everyone here has the time and energy to make fun of the OP and provide reasons why their idea won't work, they don't have the energy to provide possible solutions or get off of their buts to try something themselves (beside posting another unfounded YouTube video).

OP, your methodology is both scientific and thought out. I wish you luck. I think your concept is sound but the technology needs some refinement.

Like I said before, using a near infrared laser will negate issues with the FAA. Powerful NIR LEDs can be harvested for free from old DVD burners (wear eye protection, the beam is invisible and may be harmful at close range). These LEDs are easy to drive (power and modulate), and can be ganged together to increase overall power. De-focusing the beam into a narrow cone (rather than producing a perfectly collimated beam) will both ensure that the laser is easy to aim and that only moderate power reaches the craft. High power at the receiving end should not be needed. Even consumer level, police radar jammers can detect incident NIR light from the NIR lasers used by speed traps (yes, the police point NIR lasers at us every day).

As mentioned before the receiver circuit you are suggesting is inadequate. Try to find one that uses a photodiode instead of a solar cell. Both Digi-key and Newark in One sell many different photodiodes for only a couple dollars. Also, you will want to notch filter 60hz and 120hz or high pass above 120hz so that city lights do not swamp your receiver with a loud hum. look online for notch and high bandpass filter circuits that use op-amps. They work well, are inexpensive and practical to build.

A cheap consumer grade newton or refracting telescope on the receiving end will increase the sensitivity of your receiver many fold.

I design electronic systems. If you have any technical questions I'm happy to help where I can.

edit on 8-11-2011 by dainoyfb because: I typo'd

thank you for the info! i was thinking of interference from the city where i live. a filter would be a good idea! also i am starting a small prototype for now, and working out the bugs and adding other gadgets to it later on! like a telescope. night vision goggles 2 gen or higher! but for now its a small prototype! i will upload new pics as i build it. thank for your comments.

reply to post by eroutt


I assume you only build the transmitter and *HOPE* the aliens have a matching receiver on board. Just sayin'!

Aside from that, the principle of modulating audio as light is quite doable. This is a common technique to spy by shining a laser onto a reflective surface in the room you want to spy on, at such an angle that the reflected light lands on a detector. Vibrations in the room will cause the reflective surface to vibrate and modulate the beam. The recovered audio quality can range from poor to useless. Nonetheless, a very non-invasive way to spy.

-rrr

Originally posted by PhoenixOD
reply to post by Malkuth

 

Be sure to get the fastest laser you can afford.

Fastest? Light speed only has one speed you know? Its kind of a fundamental law of physics

edit on 8-11-2011 by PhoenixOD because: (no reason given)

Not the rate at which the beam travels but the rate at which the laser intensity can be modulated, or maximum slew rate.

-rrr

i think i am going to trash this idea for now. and work on other things like getting a really good camcorder and telescope. and if i have the money a 2nd 3rd or 4 gen night vision goggles! think you for all your comments!