 
 <prompt> Wetin dem dey call metal wey dem draw commot for long and thin threads or rods wey dem dey use transmit electricity or signals? Given the previous question, write a context wey contain the answer. E fit be 1 - 20 sentences. Context: <response>: Instead, e dey often dey wanted make person get antenna wey e impedance no dey change too much over certain bandwidth. E come be say the amount of reactance wey person go see for the terminals of a resonant antenna when the frequency dey shift, like say, by 5%, e dey depend well well on the diameter of the conductor wey dem use. A long thin wire wey dem use as half-wave dipole (or quarter wave monopole) go get reactance wey dey significantly greater pass the resistive impedance wey e get for resonance, wey go lead to poor match and generally unacceptable performance. Making the element using a tube wey get diameter wey fit be like 1/50 of e length, go result in a reactance for this changed frequency wey no go too much, and a less serious mismatch wey go only small-small damage the antenna's net performance. So, rather thick tubes dey typically used for the solid elements of such antennas, including Yagi-Uda arrays. 