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New Member

Access Point [AIR-AP35xE2R] Antenna Extension

We are looking at the possibility of using a single Access Point 350 Series to support two different rooms. (One antenna in each room)

How far can the antennas be extended from the access point on the AIR-AP35xE2R product?

Is there a specific cable required to do this extension?


  • Getting Started with Wireless
New Member

Re: Access Point [AIR-AP35xE2R] Antenna Extension

Cisco sells 100' cables, but the db loss is pretty high. They actually sell them for the external antennas used for bridging, and splitting it up is definetely not a supported setup.

I tried this method with poor results and ended up sending the cables back and purchasing a second AP. Performance is now exceptional.

New Member

Re: Access Point [AIR-AP35xE2R] Antenna Extension

The most important thing is that you not attach one antenna to each connector. That won't work (the AP will listen only to the antenna with the stronger signal).

If the rooms are adjacent, one antenna should do. If not put the AP half way between, use a 2:1 splitter off a single RP-TNC connector and put one antenna in each room.

We can help with the antenna spec and signal strength prediction if you would like.

Matthew Wheeler

Blue Modal

New Member

Re: Access Point [AIR-AP35xE2R] Antenna Extension

Blue.Modal is correct. Do NOT use an antenna in each room connected to each connector. Diversity does not work that way.

If the run is short, consider using LMR-400 cable. Cable loss in the RG-58 or LMR-200 will start to affect you. You loose half of your power (3dB loss) in 20 feet with LMR-200.

My actual preference is to use LMR-600, since it does not cost that much more. LMR-400 looses half your power in 50 ft and LMR-600 looses half in about 75 feet.

Remember that there will be loss in each connector and a pigtail must be built/purchased to go from the RTNC connector on the AP to an 'N' type connector (typically) on the LMR-400/600. Also use an omni ceiling mount (or panel wall mount if appropriate) antenna with some gain.

Mike Wrobel

Bridges Communications, LLC

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