4 vs 6 Antenna Leads - 9120AXE

[luiggi-moreira]

Hi All.

I have a question about two different AccelTex types of antennas.

Wireless design phase stated that we should use this: ATS-OP-245-8-4RPTP-36

However, we only have this one model available in our stock: ATS-OP-245-8-6RPTP-36

Therefore, antenna gain is the same, connector RP-TNC is the same... however, the number of antenna leads to be used is actually 4.

But, by using the one below with 6 leads, 2 leads would be left unconnected.

In my opinion, there shouldn't be any issue but really wanted advices or tips to confirm my thought because we are using 9120AXE with only 4-port anyways.

Can anyone help me with that?

Thank you!

[balaji.bandi]

Personally i would not suggest that, for better outcome use correct product always suggested.

https://www.cisco.com/c/en/us/products/collateral/wireless/catalyst-9100ax-access-points/guide-c07-742311.html

[jagan.chowdam]

I doubt ATS-OP-245-8-6RPTP-36 is supported to use with  Cisco C9120AXE. 

I would check with Acceltex sales support "sales@acceltex.com" before using these antennas.

Jagan Chowdam

/**Pls rate useful responses**/

[luiggi-moreira]

Thank you @jagan.chowdam , I just sent them a message on the email you provided. Thank you!

[jagan.chowdam]

It all depends on the antenna design. In some, it may reduce the antenna performance and some may not work as expected. 

In your case, I believe you'll see degraded performance with only 4 leads instead of provided 6. 

The  Antenna page from Acceltex shows only the following APs are compatible.

• Cisco 3502e
• Meraki MR46E
• Meraki MR53E

Ref: https://www.hubbell.com/acceltex/en/products/2-45-ghz-8-dbi-6-element-indooroutdoor-patch-antenna-with-rptnc/p/14675177

Jagan

[luiggi-moreira]

Thanks @balaji.bandi , we usually use AccelTex models and never faced any issues with that.

My concern is more about the fact of having 2 leads unconnected. But, theoretically, I don't think it should affect something.

Well, there is an existing difference between these 2 antenna models that I mentioned, that is, the horizontal beamwidth between them has slight value difference, but nothing that would have great impact on the design.

[luiggi-moreira · Accepted solution]

Hi folks.

 I had a call with the AccelTex and it seems they are right now running out of 4 lead antenna.
So, their RF Antenna Design team advised that the answer is YES, we can use the 6-lead antenna in the meantime with unnoticeable difference.
Their comments below:

"Yes, you can use the 6-element model and leave two leads disconnected. Best practice would be to have the two unenergized/disconnected elements be the two outside cables. This has the most physical separation amongst the elements and is simple to tell installers."

Thank you, all!