To watch TV, you need a high-quality TV signal, which means you need a good antenna that will pick up this signal and transmit it to your TV. In order for the antenna to work correctly, it must be matched to a specific frequency range. The better your antenna is and the better it is made, the brighter and better the television image on the screen will be. Also, the waveform impedance of the antenna must be matched with the cable. Making a simple antenna with your own hands is not so difficult.
Instructions
Step 1
Make an antenna out of copper tape or tubing. For the antenna, you can take any metal profile - high-frequency currents will propagate in a thin layer of the metal surface. Metal can be anything - you can use copper, bronze, steel, brass, or aluminum. The main thing is that this part is even and smooth. Since aluminum tends to form oxide, copper and brass are the best antenna materials.
Step 2
Connect the coaxial cable to the antenna elements and seal the connections with plasticized epoxy resins to protect the connections from moisture.
Step 3
After assembly, thoroughly degrease the antenna surface and paint it in several coats to prevent metal corrosion. A good material for painting is automotive enamel or nitro enamel.
Step 4
Correlate the characteristic impedance of the antenna with the characteristic impedance of the cable using a loop. How well the wave impedances of the cable and antenna are matched depends on how high-quality and uninterrupted the image on your TV screen will be.
Step 5
Find out the characteristic impedance of the selected cable, but do not take a cable with an impedance of less than 75 ohms.
