Instructables
Picture of Over the air tv antenna amp.
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Wanted to give our over the air TV antennas a little boost. Came across this circuit to see if it would work. Ihave already done several instructables about antennas, though it would be nice to something a little different.

Antenna instructables: http://www.instructables.com/id/Antennas-TV-Wifi-and-etc/

Notice: This amp is for use with indoor antennas only where there is safety from lightning or other power sources. Also can not guarantee you will have the same results with your amp.
 
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Step 1: What's needed.

Picture of What's needed.
2 - NTE107 rf transistors.
5 - 100 to 120 pf capacitors
1 - 1k resistor
2 - 47k resistors
1 - 3.3k resistor
1 - 10 - 12 volt power source such as a walwart. This project shoul not use much power.
Assorted wires for connections.
1 -  Breadboard to prototype the project.

Step 2: The circuit.

Picture of The circuit.
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I have drawn the circuit two ways in case you wanted to use a bread board. Tried to make things simple as possible. This is a two stage map for for indoor antenna use only. There is no protection against lighting. You will need extra parts if you do. See an expert for help in that case.

Step 3: How good is it?

Picture of How good is it?
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Here is where we test it out. Looks good to me! Now to make a more permanent set up.

Step 4: Alternative circuit.

Picture of Alternative circuit.
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Another antenna circuit you can try on your own risk, Not promising it will work for you, but it is another antenna amp.

Going to do an experimental circuit with the second diagram and see how it works out.

Step 5: Cable signal amp?

Picture of Cable signal amp?

Try at your own risk as I have not tested it yet. the transistors should be 123ap.

sctirvn6871 year ago
Great project! Does this amp work for digital TV signals? Thanks.
Computothought (author)  sctirvn6871 year ago
The digital tv antenna is the same old antenna with a fancier name, Same is true of the amps. Signals are in the same way but are decoded differently in the tuner.