AP1200 5GHz module - AIR-RM21A-A-K9 or AIR-RM22A-A-K9
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04-20-2006 12:52 PM - edited 07-04-2021 11:58 AM
Planning to add a 5GHz 802.11A module to the existing AIR-AP1231G-A-K9. Among other issues - optimal configuration, separation of networks, etc. - I have one pure hardware question:
What is the optimal antenna for a small office - no concrete walls or heavy metal structures?
Cisco antenna guide - http://www.cisco.com/en/US/products/hw/wireless/ps469/products_data_sheet09186a008008883b.html - lists two potential choices:
1. 9dBi Patch/5dBi omnidirectional integrated, which is built in into RM21 5GHz Radio Module (AIR-RM21A-A-K9)
2. RM22 module that comes with no antennas (AIR-RM22A-A-K9), but with two RP-TNC (reverse polarity-threaded naval connector) connectors. These, in turn can accomodate a number of antenna modules, such as AIR-ANT5135D-R dipoles, AIR-ANT5145V-R diversity omnidirectional, and a few others.
I am leaning towards the integrated one - omnidirectional, 5dBi seems to be right, price, and no need to install any additional parts, but I would be very interested in getting peoples' opinions on pros and cons, etc.
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04-26-2006 10:12 AM
I think your option is the correct. But still both the choices has its own adv and disadvantages.
But upto my knowledge, "9dBi Patch/5dBi omnidirectional integrated, which is built in into RM21 5GHz Radio Module (AIR-RM21A-A-K9)" is a suitable one.
