Over the Air Tv Antenna Amp.

Introduction: Over the Air Tv Antenna Amp.

About: computoman.blogspot.com Bytesize articles instead of a trilogy in one post.

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: https://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.

Step 1: 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.

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?

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

Step 4: Alternative Circuit.

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?

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



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    9 Discussions

    Is there a way to make this with adjustable gain?

    Do you know what the gain of this amplifier is?

    Can this circuit be used with a twin lead antenna? I just need to boost FM signal for my stereo.

    1 reply

    Can this circuit be used with a twin lead antenna? I just need to boost FM signal for my stereo.


    3 years ago

    I have a TV card for computer and dish cable connected with it. but seemingly signal strength is low. pictures are not steady and sometime colorless. can i use these circuits to boost the strength of signal from dish cable?

    1 reply

    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.