- Aug 23, 2006
- Central KY
Ok, I'm sure this is a dumb question but I'm still a radio novice and can't seem to find an answer to this. Why does the transmit power seem to decrease the higher up the spectrum you go? For example, most VHF portables have a max output of 5W, UHF 4W, and 800 3W. My understanding is that the higher the frequency, the less penetrating power it has and the more subject it is to interference and other nasty effects. So wouldn't higher frequencies need more power? It just seems contrary to the little i've read and understand about radio propagation.