Simple Tv Antenna Circuit

Wanted to give our over the air tv antennas a little boost.

Simple tv antenna circuit. Attach the antenna to a hd television. L1 l2 5turns 0 8mm ø 5mm ø the second turn from ground. A very simple and cheap tv antenna amplifier circuit built with bf961 a n channel dual gate mos common transistor used for input and mixer stages especially for fm and vhf tv tuners up to 300 mhz. On the shortwave band this active antenna is comparable to a 20 to 30 foot wire antenna.

Came across this circuit to see if it would work. The input signal is fed to the emitter of q1 through this filter. Use a coax cable which can be purchased on the internet or at an electronics retailer. Ihave already done several instructables about antennas though it would be nice to something a little different.

Follow the instructions that come with the coax cable. Active antenna for am fm sw this simple little circuit can be used for am fm and shortwave sw. Over the air tv antenna amp. Referring to the circuit below q1 is configured as a preamplifier for amplifying the audio input to be modulated.

Using a hot glue gun or tape you can finalize and secure the transformer and wires neatly. Capacitors c2 c3 c4 c5 and inductors l3 l4 forms a uhf band pass filter. Low cost folded dipole antennas can work well. The circuit operates in the uhf band and has a gain of 15db.

A very simple and cheap tv antenna amplifier circuit built with bf961 a n channel dual gate mos common wideband uhf amplifier antenna tv amplifier circuit received by email 10 23 2009 this uhf wideband amplifier ultra high frequency amplifier has a total gain of 10 to 15 db in the. Simple tv transmitter circuit last updated on february 23 2020 by swagatam 4 comments the tv transmitter circuit presented in this post incorporates the european standard fm frequency for audio and video up links. If you look at the transformer there are two wires and a female tv cable connector. The circuit shown here is of a tv antenna booster based on the transistor bf180.

This circuit has a only 18 inch antenna when used with short wave the radio receiver will be able to receive signals from stations around the world more clearly. Build simple tv antenna and receive local to regional stations. That s pretty much everything for the antenna part. It is a circuit to try to work on many brands of radios.

It is further more designed to be used on receivers that use untuned wire antennas such as inexpensive units and car radios. Low cost folded dipole antennas can work well.