 
 <prompt> "Which one beta, low SWR or high SWR? Based on di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context:" <response>: As electro-magnetic wave dey waka through different parts of antenna system (radio, feed line, antenna, free space), e fit jam impedance differences (E/H, V/I, etc.). For each interface wey e reach, based on how the impedance match dey, some part of the wave energy fit bounce back to the source, come form standing wave for the feed line. The ratio of maximum power to minimum power for the wave fit be measured and e dey called standing wave ratio (SWR). SWR of 1:1 na ideal. SWR of 1.5:1 dey okay small for low power applications where power loss dey important, even though SWR as high as 6:1 fit still work with correct equipment. To reduce SWR and make sure say power transfer dey high through each part of the antenna system, e dey important to minimize impedance differences for each interface (impedance matching). 