Radio Amateur Quiz Canadian License

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Question B-006-004-009

If the length of coaxial transmission line is increased from 20 metres (66 ft) to 40 metres (132 ft), how would this affect the line loss?

Correct Answer

It would be increased by 100%

Explanation

Doubling the length doubles the total loss (in dB). If the loss was X dB for 20m, it will be 2X dB for 40m.

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