topic Re: How can I increase AP510E 5G transit power in ExtremeWireless (WiNG)

How can I increase AP510E 5G transit power

oxoyoz — Wed, 08 Sep 2021 03:00:52 GMT

I have an AP510E with RF-Domain as CA (Canada), and radio2 on 5G channel 153WW . I am not using smart-RF currently.

The issue I have is that my AP’s radio2’s transit power maxes at 18dbM, even though I configured the transit power on the WebUI as 30dBm. With the current 18 dBm setting, Radio2’s EIRP value maxes at 22.85dBm (adding another 6dBM for 4X4 MIMO gain the value would be 28.85 dBm), which is way below the regulatory limit, 36dBM.

How can I increase transit power of my AP? Thanks for the help!

According to the below CLI command, CA’s EIRP limit for band 153WW should be at 36dBm.

Re: How can I increase AP510E 5G transit power

Emre_Kurtman — Wed, 08 Sep 2021 13:19:40 GMT

Hello,

Doing a quick search, I believe the “show wireless regulatory” output might be off. Below is the part from Canada governments official website for channels 149-165. (Freq: 5725-5850 Mhz) https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf10971.html#s6.2.1

So according to this, conducted power should not exceed 1W = 30 dbm and the current max EIRP you are getting adds up to this value.

I suggest that you open a GTAC ticket to confirm the regulatory limits as your EIRP calculation is true. (Tx Power + MIMO Gain (10log(4) + Antenna Gain)

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6.2.4 Frequency band 5725-5850 MHz

6.2.4.1 Power limits

For equipment operating in the band 5725-5850 MHz, the minimum 6 dB bandwidth shall be at least 500 kHz.

The maximum conducted output power shall not exceed 1 W. The output power spectral density shall not exceed 30 dBm in any 500 kHz band. If transmitting antennas of directional gain greater than 6 dBi are used, both the maximum conducted output power and the output power spectral density shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi. However, fixed point-to-point devices operating in this band may employ transmitting antennas with directional gain greater than 6 dBi without any corresponding reduction in transmitter conducted power. Fixed point-to-point operations exclude the use of point-to-multipoint systems, omnidirectional applications and multiple collocated transmitters transmitting the same information.

Re: How can I increase AP510E 5G transit power

oxoyoz — Thu, 09 Sep 2021 01:25:03 GMT

Hi Emre,

I appreciate your time looking into this issue for me.

I read the link you provided and here is what I think:

This means under the current setting (CA as RF-Domain; using 4 ml-2452-apa2-01 antennas; using 4X4 MIMO antenna configuration), AP510E’s max conducted output power / Transmit Power should be set at 24 dBm, instead of 18 dBm in the firmware.

Re: How can I increase AP510E 5G transit power

oxoyoz — Mon, 13 Sep 2021 22:32:58 GMT

I submitted a GTAC ticket, got an answer that may help other members who are looking into this:

AP limits the power to max at 18dbm (base on datasheet Page4)
https://cloud.kapostcontent.net/pub/7a4866d1-4159-4610-99c1-b950e85317a1/ap510-data-sheet?kui=98OlHzxI2sMxLtQR0ZjUaQ
''the Power(dBm) at sheet is the CONDUCTED POWER MAX(limit).
A country code CA regulatory accept 36dBm. But the AP cannot increase more than 18dBm.
Which means required the need to use 18dBi antenna or chain gain +6dBm + 12dBi(antenna) to reach 36dBm.'"

Re: How can I increase AP510E 5G transit power

SamPirok — Tue, 14 Sep 2021 21:17:17 GMT

Thank you very much for sharing that answer!