FCC regulates radios transmitting on UNII-2A band to 30dBm EIRP. Why does the UI state the maximum EIRP is 36dBm?
This is seen with 450i and 450m radios
Can anyone please provide an answer? Note, the APs in question are using 40Mhz carriers, so if we are assuming a PSD of 30dBm/10Mhz, then 36dBm does make sense over 40MHz. However, the same radios when tuned to UNII-2C (5.4GHz), the same 40MHz channel has EIRP of only 30dBm which does match with FCC regulations. So what’s the story here?
The PMP450 series was FCC certified probably over a decade ago? I don’t think you’re going to get a satisfying answer from Cambium. My installation advise would be to use your best judgement.
And the stock closed at .99 today, I think they have bigger concerns
Have you read through this?
Update, closed at .94 cents today. ooof
Also, I think the most recent User Guide is listed under the 24.0.1 downloads section and doesn’t appear to be updated with any of the newer released versions. If you review that you will find information on page 657 concerning the 450i and on page 659 concerning the 450m where there is a note under conducted power that references the following.
This EIRP value is the limit of the parameter configured in the PMP 450m GUI. Note that not all
operating modes achieve the same EIRP.
The limits are as follows:
Sector mode 42 dBm
Beamforming mode QPSK 48 dBm
Beamforming mode 16-QAM 48 dBm
Beamforming mode 64-QAM 46 dBm
Beamforming mode 256-QAM 44 dBm
MU-MIMO mode 44 dBm.