Quote:
Originally Posted by Richard Fry
"Ron J" wrote
I'm still skeptical about this formula:
Field Strength (uV/m) = 10 ^ ( (107 - |dBm| ) / 20 )
Is this valid? I saw this formula somewhere and jotted it down.
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uV/m = 10^[(dBm - G + 20*log(F) + L +75)/20]
where
dBm = signal level at receiver input in dB with respect to 1 mW
G = receiving antenna gain in dBd
L = line loss in decibels
F = Frequency in MHz
RF
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Sorry for bumping up the post, but I have the same question and there are some explenations after the above post. Neither confirmed that the equation above is the right one to calculate uV/m into dBm.
I have a same question but in the other direction. I have V/m and want to convert it to dBm does anybody know the answer to this?
I have already looked at this site:
http://www.sengpielaudio.com/calculator-volt.htm
But it is only possible to convert V into dBm and not V/m into dBm.
Or is V the same as V/m? I don't that those are the same.
The reason why I ask is because the regulations of my country says that the E = 30,7 V/m may not exceed for transmitting between 2-10GHz. No where in that document I found the maximum allowed transmitted power in dBm.
grtz
Kristof
(making a study about LTE radio link budget)