Radio Amateur Quiz Canadian License

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Question B-006-005-006

If your antenna transmission line gets hot when you are transmitting, what might this mean?

Correct Answer

The SWR may be too high, or the transmission line loss may be high

Explanation

High SWR increases the current flowing in the transmission line, leading to higher I^2*R losses and heating. Even with a good SWR, a very lossy cable can get warm, especially at high power.

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