Use of external Aironet Antennas

When comparing between the 2 models of external antennas (AIR-ANT5170P-R and AIR-ANT2460P-R), I noticed that they comes with different number of connectors (RP-TNC). The AIR-ANT5170P-R comes with two connectors, while the AIR-ANT2460P-R comes with one connector.
Assuming IÂm using the Cisco 1242 Series Dual Radio AP, how many of the AIR-ANT2460P-R antenna do I connect to the 2.4GHz ports?
I believe I will only need to connect 1 unit of the AIR-ANT5170P-R antenna to the 5GHz port, as it already comes with two connectors.

Hi Tan,
You are on the right track here for sure :)
Why don't you try this Antenna instead of the 2460;
AIR-ANT2465P-R
Diversity Patch
Wall-mount indoor/outdoor antenna with two RP-TNC connectors-Similar to the above patch, but providing diversity antennas in the same package for areas where multipath problems exist. The pigtail cable is plenum rated and 36" long.
http://www.cisco.com/en/US/prod/collateral/wireless/ps7183/ps469/product_data_sheet09186a008008883b.html
Hope this helps!
Rob

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Otherwise if you put the antenna outdoor and there is no obstacle, 40/50m should be reached with those antennas. Take the lowest length of cable possible to put the antenna outdoor though as cable brings loss.
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===
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Use of external Aironet Antennas

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