Comment Comment by timerol > 2 mW / 1 mW = 2 = 10^(3/10) = 3 dBmIt's worth noting that this is wrong, in exactly the way that makes decibels confusing. 3 dBm is an absolute power figure (about 2 mW). 2 mW / 1 mW is a ratio of 2 (about 3 dB).2 mW / 1 mW = 2 = 10^(3/10) = 3 dB.2 mW = 2 * 1 mW = 10^(3/10) * 1 mW = 3 dB (1 mW) = 3 dBm. parent timerol 1 year ago
It's worth noting that this is wrong, in exactly the way that makes decibels confusing. 3 dBm is an absolute power figure (about 2 mW). 2 mW / 1 mW is a ratio of 2 (about 3 dB).
2 mW / 1 mW = 2 = 10^(3/10) = 3 dB.
2 mW = 2 * 1 mW = 10^(3/10) * 1 mW = 3 dB (1 mW) = 3 dBm.