You will need
- A piece of cable marking, its technical passport.
Instruction
1
Carefully read the label of the cable. It is important that its core was made of copper or copper-plated steel. Due to this, the cable will have a rigidity and good performance.
2
Examine the outer insulation of the cable. It should be solid and inelastic. Slide your fingernail in isolation. If separating the pieces of material, such cable should not be used for the spacers between the TV and the antenna.
3
Remove the top layer of insulation and check the tightness of the braid screen of the Central core. The more thin wires in the braid, the tighter the screen the less interference with his work.
4
Note the nameplate data cable. The lower the value of attenuation of the TV signal at a specific frequency and cable length, the better the television broadcasts.
Note
For antenna use a cable with impedance of 75 Ohm. When the resistance is below this figure the cable can only be used for radio transmission equipment and computer networks. At resistance values higher than 75 Ohm cable suitable for matching of the receiving antenna with a feeder.
Signal attenuation 70% means that the service life of the cable expired. When choosing a product, pay attention to this data sheet, which contains information about the life of the cable.
Thin cable is not suitable for antennas. It can only transfer a limited number of channels and shielding his meager opportunities.
Cable RK-75 is obsolete, it is of high attenuation.
Buy the cable only in specialized stores.
Signal attenuation 70% means that the service life of the cable expired. When choosing a product, pay attention to this data sheet, which contains information about the life of the cable.
Thin cable is not suitable for antennas. It can only transfer a limited number of channels and shielding his meager opportunities.
Cable RK-75 is obsolete, it is of high attenuation.
Buy the cable only in specialized stores.
Useful advice
TV always has a circular shape. Cable operating in the bands UHF and SHF, preferably using braid and foil, as well as tubular polyethylene or PVC insulation waterproof gel filler. This will improve operating conditions and reduce the level of interference on TV signal.
