wrote in message
oups.com...
I can't remember my formulas. If I have a transmitter that puts 1 watt
into a beam antenna that has a gain of 8.0DB what is my EFR? Please
show the work. I need to be able to demonstrate this to a customer.

Take the anti-log of 0.8 (in this case).

based on:

8 dB = 10 x log (X/1)

divide both sides by 10 and then take the anti-log (10^x key).