03-01-2021 09:32 AM - edited 07-05-2021 01:18 PM
Hello,
Based on the formula below, dBm 19.979 should be 99.51mW, but a window box in Ekahau shows it is 25mW. Please see the screenshot below. Are there any one who can tell what the issue is? Thank you
P(mW) = 1mW ⋅ 10^(P(dBm)/ 10)
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03-01-2021 12:59 PM - edited 03-01-2021 01:00 PM
Hello David,
Don't forget to take the antenna gain into account.
With an antenna gain of 4 dB and a transmit power of 25 mW, the EIRP is 25 x 4 = 100 mW (20 dBm).
PS: here is the EIRP formula: (RF Power - cable loss) * Antenna Gain
03-01-2021 11:14 AM
Hi David,
I think that should be a bug of Ekahau, pls report to them and they should fix it
HTH
Rasika
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03-01-2021 12:59 PM - edited 03-01-2021 01:00 PM
Hello David,
Don't forget to take the antenna gain into account.
With an antenna gain of 4 dB and a transmit power of 25 mW, the EIRP is 25 x 4 = 100 mW (20 dBm).
PS: here is the EIRP formula: (RF Power - cable loss) * Antenna Gain
03-01-2021 03:51 PM
I think you are right. Thank you
03-06-2021 01:15 PM
EIRP = Transmit_Power - Cable_Loss + Antenna_Gain
25 mW == 14 dBm
gain of 3802i dedicated 5GHz antenna = 5 dBi
14+5=19
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