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Emerging Member
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UniFi Access Points limited transmission power in 2.4 GHz

[ Edited ]

I noticed that all my UniFi access points didn´t send with the maximum legal transmission power in the setting "High".

In Austria is 20dBm EIRP allowed, but the UniFi ac lite is only sending with 14dBm/17 dBm EIRP with transmit power setting "High". Why is that so?

See the screenshots attached.

The curios thing is, if I use the "Custom" setting, I can set the transmission power up to 20 dBm EIRP.

Maybe there is a wrong transmission limit for austria in Firmware. Can someone check this?

Transmission power.JPGDetail.JPG

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Re: UniFi Access Points limited transmission power in 2.4 GHz

Hello @longdongjohn,

 

Why do you want the UAP to should so loud anyways?

Is your country set correctly?

Have you tried custom settings?

 

Regards,

Glenn R.

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Re: UniFi Access Points limited transmission power in 2.4 GHz

[ Edited ]

Why do you want the UAP to should so loud anyways?


Please don't get me wrong, but this is not the answer to my question. There are several reasons for setting the transmission power to maximum. The same reasons why Ubiquiti sells UAP-LR models --> Range.

 

Is your country set correctly?


Sure.

Have you tried custom settings?


See my first post.

 

Regards

Daniel

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Re: UniFi Access Points limited transmission power in 2.4 GHz

That's not right and that's why you are being asked. The UAP-AC-LR is not just LOUDER (more powerful), it also has a better reception antenna to pick up weak devices.

 

Think of it yelling at someone 100 yards away from you, but they have laryngitis. They can hear you, but you can't hear them unless you have something to help focus their sound.

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Re: UniFi Access Points limited transmission power in 2.4 GHz


@RobbieH wrote:

That's not right and that's why you are being asked. The UAP-AC-LR is not just LOUDER (more powerful), it also has a better reception antenna to pick up weak devices.

 

Think of it yelling at someone 100 yards away from you, but they have laryngitis. They can hear you, but you can't hear them unless you have something to help focus their sound.


The antenna gain of UAP ac lite has 3 dBi and a UAP ac LR also have 3 dBi. So why should a LR hear better?

 

But anyway, I don´t want to discuss about antenna gain, I want to know why the UniFi access points are limited to 17 dBm.

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Re: UniFi Access Points limited transmission power in 2.4 GHz

If you set TX power to 20 dBm using the "Custom" option, what does controller show for the EIRP value under the Details > RADIO tab?
Thanks,
Myky
CWNA
--------------------------------------------------------------------------------------------------------------------------------------------------
Don`t blame the device as it`s always doing what you have asked it to do, this is not always the same as what you want.
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Re: UniFi Access Points limited transmission power in 2.4 GHz


@Myky wrote:
If you set TX power to 20 dBm using the "Custom" option, what does controller show for the EIRP value under the Details > RADIO tab?

Then everything is fine.

Custom limit the transmission power to the legal 20 dBm.

Bildschirmfoto 2019-03-18 um 21.10.41.png

 

Regards

Daniel

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Re: UniFi Access Points limited transmission power in 2.4 GHz

[ Edited ]

Sounds like an issue. Set the power to"High", SSH to the AP and use below command to config actual TX power:
# iwconfig

What Tx-Power do you see?

Thanks,
Myky
CWNA
--------------------------------------------------------------------------------------------------------------------------------------------------
Don`t blame the device as it`s always doing what you have asked it to do, this is not always the same as what you want.
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Re: UniFi Access Points limited transmission power in 2.4 GHz


@Myky wrote:

Sounds like an issue. Set the power to"High", SSH to the AP and use below command to config actual TX power:
# iwconfig

What Tx-Power do you see?


ath0      IEEE 802.11ng  ESSID:"Karlhuber"  
          Mode:Master  Frequency:2.412 GHz  Access Point: B4:FB:E4:11:80:52   
          Bit Rate:6.068 kb/s   Tx-Power=14 dBm   
          RTS thr:off   Fragment thr:off
          Encryption key:EC8A-AAD5-0994-27C9-A152-7643-DAE6-DDBF [2]   Security mode:open
          Power Management:off
          Link Quality=255/94  Signal level=-1 dBm  Noise level=-108 dBm
          Rx invalid nwid:3923  Rx invalid crypt:32  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
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Re: UniFi Access Points limited transmission power in 2.4 GHz

[ Edited ]

Admin guide says the following:

 

tx.JPG

 

So obviously you get not the "highest", so it is an issue. 

Thanks,
Myky
CWNA
--------------------------------------------------------------------------------------------------------------------------------------------------
Don`t blame the device as it`s always doing what you have asked it to do, this is not always the same as what you want.
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Re: UniFi Access Points limited transmission power in 2.4 GHz


@Myky wrote:

Admin guide says the following:

 

tx.JPG

 

So obviously you get not the "highest", so it is an issue. 


Nice.

 

@UBNT-MikeD 

Can you please check this and confirm?

 

Regards

Daniel

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Re: UniFi Access Points limited transmission power in 2.4 GHz

Any news here?

 

Can anybody from UBNT check this?

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