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我自製了一隻場強錶 (Field Strength Meter),雖然精準度肯定是沒有的,但靈敏度還可以。
不過因為二極體是 1N60P,所以頻率大概到 VHF 而已,到了 UHF 頻段靈敏度就會大幅降低。

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