Complete Idiot’s Guide to Decibels dB vs dBi vs dBW – Ham Radio

Let’s chat about dB, dBi and how to quickly add, multiply and compare decibels in your head without a calculator. dB was always a difficult topic for me in the early days because nobody taught me – or maybe I just didn’t listen? Anyway, this should clear things up a bit for you. However this link has the science behind my chat:

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40 Metres
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